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6 months agoxfs: add metadata reservations for realtime refcount btree
Darrick J. Wong [Mon, 23 Sep 2024 20:42:29 +0000 (13:42 -0700)]
xfs: add metadata reservations for realtime refcount btree

Reserve some free blocks so that we will always have enough free blocks
in the data volume to handle expansion of the realtime refcount btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime refcount btree inode to metadata directory
Darrick J. Wong [Mon, 23 Sep 2024 20:42:29 +0000 (13:42 -0700)]
xfs: add realtime refcount btree inode to metadata directory

Add a metadir path to select the realtime refcount btree inode and load
it at mount time.  The rtrefcountbt inode will have a unique extent format
code, which means that we also have to update the inode validation and
flush routines to look for it.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime refcount btree block detection to log recovery
Darrick J. Wong [Mon, 23 Sep 2024 20:42:28 +0000 (13:42 -0700)]
xfs: add realtime refcount btree block detection to log recovery

Identify rt refcount btree blocks in the log correctly so that we can
validate them during log recovery.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: support recovering refcount intent items targetting realtime extents
Darrick J. Wong [Mon, 23 Sep 2024 20:42:27 +0000 (13:42 -0700)]
xfs: support recovering refcount intent items targetting realtime extents

Now that we have reflink on the realtime device, refcount intent items
have to support remapping extents on the realtime volume.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add a realtime flag to the refcount update log redo items
Darrick J. Wong [Mon, 23 Sep 2024 20:42:26 +0000 (13:42 -0700)]
xfs: add a realtime flag to the refcount update log redo items

Extend the refcount update (CUI) log items with a new realtime flag that
indicates that the updates apply against the realtime refcountbt.  We'll
wire up the actual refcount code later.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: prepare refcount functions to deal with rtrefcountbt
Darrick J. Wong [Mon, 23 Sep 2024 20:42:25 +0000 (13:42 -0700)]
xfs: prepare refcount functions to deal with rtrefcountbt

Prepare the high-level refcount functions to deal with the new realtime
refcountbt and its slightly different conventions.  Provide the ability
to talk to either refcountbt or rtrefcountbt formats from the same high
level code.

Note that we leave the _recover_cow_leftovers functions for a separate
patch so that we can convert it all at once.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime refcount btree operations
Darrick J. Wong [Mon, 23 Sep 2024 20:42:25 +0000 (13:42 -0700)]
xfs: add realtime refcount btree operations

Implement the generic btree operations needed to manipulate rtrefcount
btree blocks. This is different from the regular refcountbt in that we
allocate space from the filesystem at large, and are neither constrained
to the free space nor any particular AG.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: realtime refcount btree transaction reservations
Darrick J. Wong [Mon, 23 Sep 2024 20:42:24 +0000 (13:42 -0700)]
xfs: realtime refcount btree transaction reservations

Make sure that there's enough log reservation to handle mapping
and unmapping realtime extents.  We have to reserve enough space
to handle a split in the rtrefcountbt to add the record and a second
split in the regular refcountbt to record the rtrefcountbt split.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: define the on-disk realtime refcount btree format
Darrick J. Wong [Mon, 23 Sep 2024 20:42:23 +0000 (13:42 -0700)]
xfs: define the on-disk realtime refcount btree format

Start filling out the rtrefcount btree implementation. Start with the
on-disk btree format; add everything needed to read, write and
manipulate refcount btree blocks. This prepares the way for connecting
the btree operations implementation.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: namespace the maximum length/refcount symbols
Darrick J. Wong [Mon, 23 Sep 2024 20:42:22 +0000 (13:42 -0700)]
xfs: namespace the maximum length/refcount symbols

Actually namespace these variables properly, so that readers can tell
that this is an XFS symbol, and that it's for the refcount
functionality.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: introduce realtime refcount btree definitions
Darrick J. Wong [Mon, 23 Sep 2024 20:42:21 +0000 (13:42 -0700)]
xfs: introduce realtime refcount btree definitions

Add new realtime refcount btree definitions. The realtime refcount btree
will be rooted from a hidden inode, but has its own shape and therefore
needs to have most of its own separate types.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: prepare refcount btree cursor tracepoints for realtime
Darrick J. Wong [Mon, 23 Sep 2024 20:42:20 +0000 (13:42 -0700)]
xfs: prepare refcount btree cursor tracepoints for realtime

Rework the refcount btree cursor tracepoints in preparation to handle the
realtime refcount btree cursor.  Mostly this involves renaming the field to
"refcbno" and extracting the group number from the cursor when possible.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: enable realtime rmap btree
Darrick J. Wong [Mon, 23 Sep 2024 20:42:20 +0000 (13:42 -0700)]
xfs: enable realtime rmap btree

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: hook live realtime rmap operations during a repair operation
Darrick J. Wong [Mon, 23 Sep 2024 20:42:19 +0000 (13:42 -0700)]
xfs: hook live realtime rmap operations during a repair operation

Hook the regular realtime rmap code when an rtrmapbt repair operation is
running so that we can unlock the AGF buffer to scan the filesystem and
keep the in-memory btree up to date during the scan.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: create a shadow rmap btree during realtime rmap repair
Darrick J. Wong [Mon, 23 Sep 2024 20:42:18 +0000 (13:42 -0700)]
xfs: create a shadow rmap btree during realtime rmap repair

Create an in-memory btree of rmap records instead of an array.  This
enables us to do live record collection instead of freezing the fs.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: online repair of the realtime rmap btree
Darrick J. Wong [Mon, 23 Sep 2024 20:42:17 +0000 (13:42 -0700)]
xfs: online repair of the realtime rmap btree

Repair the realtime rmap btree while mounted.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: support repairing metadata btrees rooted in metadir inodes
Darrick J. Wong [Mon, 23 Sep 2024 20:42:16 +0000 (13:42 -0700)]
xfs: support repairing metadata btrees rooted in metadir inodes

Adapt the repair code so that we can stage a new btree in the data fork
area of a metadir inode and reap the old blocks.  We already have nearly
all of the infrastructure; the only parts that were missing were the
metadata inode reservation handling.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: online repair of realtime bitmaps for a realtime group
Darrick J. Wong [Mon, 23 Sep 2024 20:42:16 +0000 (13:42 -0700)]
xfs: online repair of realtime bitmaps for a realtime group

For a given rt group, regenerate the bitmap contents from the group's
realtime rmap btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: repair rmap btree inodes
Darrick J. Wong [Mon, 23 Sep 2024 20:42:15 +0000 (13:42 -0700)]
xfs: repair rmap btree inodes

Teach the inode repair code how to deal with realtime rmap btree inodes
that won't load properly.  This is most likely moot since the filesystem
generally won't mount without the rtrmapbt inodes being usable, but
we'll add this for completeness.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: repair inodes that have realtime extents
Darrick J. Wong [Mon, 23 Sep 2024 20:42:14 +0000 (13:42 -0700)]
xfs: repair inodes that have realtime extents

Plumb into the inode core repair code the ability to search for extents
on realtime devices.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: online repair of realtime file bmaps
Darrick J. Wong [Mon, 23 Sep 2024 20:42:13 +0000 (13:42 -0700)]
xfs: online repair of realtime file bmaps

Repair the block mappings of realtime files.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: walk the rt reverse mapping tree when rebuilding rmap
Darrick J. Wong [Mon, 23 Sep 2024 20:42:13 +0000 (13:42 -0700)]
xfs: walk the rt reverse mapping tree when rebuilding rmap

When we're rebuilding the data device rmap, if we encounter an "rmap"
format fork, we have to walk the (realtime) rmap btree inode to build
the appropriate mappings.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: scrub the metadir path of rt rmap btree files
Darrick J. Wong [Mon, 23 Sep 2024 20:42:12 +0000 (13:42 -0700)]
xfs: scrub the metadir path of rt rmap btree files

Add a new XFS_SCRUB_METAPATH subtype so that we can scrub the metadata
directory tree path to the rmap btree file for each rt group.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: scan rt rmap when we're doing an intense rmap check of bmbt mappings
Darrick J. Wong [Mon, 23 Sep 2024 20:42:11 +0000 (13:42 -0700)]
xfs: scan rt rmap when we're doing an intense rmap check of bmbt mappings

Teach the bmbt scrubber how to perform a comprehensive check that the
rmapbt does not contain /any/ mappings that are not described by bmbt
records when it's dealing with a realtime file.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: cross-reference the realtime rmapbt
Darrick J. Wong [Mon, 23 Sep 2024 20:42:10 +0000 (13:42 -0700)]
xfs: cross-reference the realtime rmapbt

Teach the data fork and realtime bitmap scrubbers to cross-reference
information with the realtime rmap btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: cross-reference realtime bitmap to realtime rmapbt scrubber
Darrick J. Wong [Mon, 23 Sep 2024 20:42:09 +0000 (13:42 -0700)]
xfs: cross-reference realtime bitmap to realtime rmapbt scrubber

When we're checking the realtime rmap btree entries, cross-reference
those entries with the realtime bitmap too.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: scrub the realtime rmapbt
Darrick J. Wong [Mon, 23 Sep 2024 20:42:09 +0000 (13:42 -0700)]
xfs: scrub the realtime rmapbt

Check the realtime reverse mapping btree against the rtbitmap, and
modify the rtbitmap scrub to check against the rtrmapbt.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: allow queued realtime intents to drain before scrubbing
Darrick J. Wong [Mon, 23 Sep 2024 20:42:08 +0000 (13:42 -0700)]
xfs: allow queued realtime intents to drain before scrubbing

When a writer thread executes a chain of log intent items for the
realtime volume, the ILOCKs taken during each step are for each rt
metadata file, not the entire rt volume itself.  Although scrub takes
all rt metadata ILOCKs, this isn't sufficient to guard against scrub
checking the rt volume while that writer thread is in the middle of
finishing a chain because there's no higher level locking primitive
guarding the realtime volume.

When there's a collision, cross-referencing between data structures
(e.g. rtrmapbt and rtrefcountbt) yields false corruption events; if
repair is running, this results in incorrect repairs, which is
catastrophic.

Fix this by adding to the mount structure the same drain that we use to
protect scrub against concurrent AG updates, but this time for the
realtime volume.

[Contains a few cleanups from hch]

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: fix scrub tracepoints when inode-rooted btrees are involved
Darrick J. Wong [Mon, 23 Sep 2024 20:42:07 +0000 (13:42 -0700)]
xfs: fix scrub tracepoints when inode-rooted btrees are involved

Fix a minor mistakes in the scrub tracepoints that can manifest when
inode-rooted btrees are enabled.  The existing code worked fine for bmap
btrees, but we should tighten the code up to be less sloppy.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: report realtime rmap btree corruption errors to the health system
Darrick J. Wong [Mon, 23 Sep 2024 20:42:06 +0000 (13:42 -0700)]
xfs: report realtime rmap btree corruption errors to the health system

Whenever we encounter corrupt realtime rmap btree blocks, we should
report that to the health monitoring system for later reporting.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: check that the rtrmapbt maxlevels doesn't increase when growing fs
Darrick J. Wong [Mon, 23 Sep 2024 20:42:05 +0000 (13:42 -0700)]
xfs: check that the rtrmapbt maxlevels doesn't increase when growing fs

The size of filesystem transaction reservations depends on the maximum
height (maxlevels) of the realtime btrees.  Since we don't want a grow
operation to increase the reservation size enough that we'll fail the
minimum log size checks on the next mount, constrain growfs operations
if they would cause an increase in those maxlevels.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: wire up getfsmap to the realtime reverse mapping btree
Darrick J. Wong [Mon, 23 Sep 2024 20:42:05 +0000 (13:42 -0700)]
xfs: wire up getfsmap to the realtime reverse mapping btree

Connect the getfsmap ioctl to the realtime rmapbt.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: create routine to allocate and initialize a realtime rmap btree inode
Darrick J. Wong [Mon, 23 Sep 2024 20:42:04 +0000 (13:42 -0700)]
xfs: create routine to allocate and initialize a realtime rmap btree inode

Create a library routine to allocate and initialize an empty realtime
rmapbt inode.  We'll use this for mkfs and repair.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: wire up rmap map and unmap to the realtime rmapbt
Darrick J. Wong [Mon, 23 Sep 2024 20:42:03 +0000 (13:42 -0700)]
xfs: wire up rmap map and unmap to the realtime rmapbt

Connect the map and unmap reverse-mapping operations to the realtime
rmapbt via the deferred operation callbacks.  This enables us to
perform rmap operations against the correct btree.

[Contains a minor bugfix from hch]

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: allow inodes with zero extents but nonzero nblocks
Darrick J. Wong [Mon, 23 Sep 2024 20:42:02 +0000 (13:42 -0700)]
xfs: allow inodes with zero extents but nonzero nblocks

Metadata inodes that store btrees will have zero extents and a nonzero
nblocks.  Adjust the inode verifier so that this combination is not
flagged.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: wire up a new inode fork type for the realtime rmap
Darrick J. Wong [Mon, 23 Sep 2024 20:42:01 +0000 (13:42 -0700)]
xfs: wire up a new inode fork type for the realtime rmap

Plumb in the pieces we need to embed the root of the realtime rmap
btree in an inode's data fork, complete with new fork type and
on-disk interpretation functions.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add metadata reservations for realtime rmap btrees
Darrick J. Wong [Mon, 23 Sep 2024 20:42:01 +0000 (13:42 -0700)]
xfs: add metadata reservations for realtime rmap btrees

Reserve some free blocks so that we will always have enough free blocks
in the data volume to handle expansion of the realtime rmap btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime reverse map inode to metadata directory
Darrick J. Wong [Mon, 23 Sep 2024 20:42:00 +0000 (13:42 -0700)]
xfs: add realtime reverse map inode to metadata directory

Add a metadir path to select the realtime rmap btree inode and load
it at mount time.  The rtrmapbt inode will have a unique extent format
code, which means that we also have to update the inode validation and
flush routines to look for it.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime rmap btree block detection to log recovery
Darrick J. Wong [Mon, 23 Sep 2024 20:41:59 +0000 (13:41 -0700)]
xfs: add realtime rmap btree block detection to log recovery

Identify rtrmapbt blocks in the log correctly so that we can
validate them during log recovery.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: support recovering rmap intent items targetting realtime extents
Darrick J. Wong [Mon, 23 Sep 2024 20:41:58 +0000 (13:41 -0700)]
xfs: support recovering rmap intent items targetting realtime extents

Now that we have rmap on the realtime device, log recovery has to
support remapping extents on the realtime volume.  Make this work.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add a realtime flag to the rmap update log redo items
Darrick J. Wong [Mon, 23 Sep 2024 20:41:57 +0000 (13:41 -0700)]
xfs: add a realtime flag to the rmap update log redo items

Extend the rmap update (RUI) log items with a new realtime flag that
indicates that the updates apply against the realtime rmapbt.  We'll
wire up the actual rmap code later.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: prepare rmap functions to deal with rtrmapbt
Darrick J. Wong [Mon, 23 Sep 2024 20:41:57 +0000 (13:41 -0700)]
xfs: prepare rmap functions to deal with rtrmapbt

Prepare the high-level rmap functions to deal with the new realtime
rmapbt and its slightly different conventions.  Provide the ability
to talk to either rmapbt or rtrmapbt formats from the same high
level code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add realtime rmap btree operations
Darrick J. Wong [Mon, 23 Sep 2024 20:41:56 +0000 (13:41 -0700)]
xfs: add realtime rmap btree operations

Implement the generic btree operations needed to manipulate rtrmap
btree blocks. This is different from the regular rmapbt in that we
allocate space from the filesystem at large, and are neither
constrained to the free space nor any particular AG.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: realtime rmap btree transaction reservations
Darrick J. Wong [Mon, 23 Sep 2024 20:41:55 +0000 (13:41 -0700)]
xfs: realtime rmap btree transaction reservations

Make sure that there's enough log reservation to handle mapping
and unmapping realtime extents.  We have to reserve enough space
to handle a split in the rtrmapbt to add the record and a second
split in the regular rmapbt to record the rtrmapbt split.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: define the on-disk realtime rmap btree format
Darrick J. Wong [Mon, 23 Sep 2024 20:41:54 +0000 (13:41 -0700)]
xfs: define the on-disk realtime rmap btree format

Start filling out the rtrmap btree implementation. Start with the
on-disk btree format; add everything needed to read, write and
manipulate rmap btree blocks. This prepares the way for connecting the
btree operations implementation.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: introduce realtime rmap btree definitions
Darrick J. Wong [Mon, 23 Sep 2024 20:41:53 +0000 (13:41 -0700)]
xfs: introduce realtime rmap btree definitions

Add new realtime rmap btree definitions. The realtime rmap btree will
be rooted from a hidden inode, but has its own shape and therefore
needs to have most of its own separate types.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: simplify the xfs_rmap_{alloc,free}_extent calling conventions
Darrick J. Wong [Mon, 23 Sep 2024 20:41:53 +0000 (13:41 -0700)]
xfs: simplify the xfs_rmap_{alloc,free}_extent calling conventions

Simplify the calling conventions by allowing callers to pass a fsbno
(xfs_fsblock_t) directly into these functions, since we're just going to
set it in a struct anyway.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: prepare rmap btree cursor tracepoints for realtime
Darrick J. Wong [Mon, 23 Sep 2024 20:41:52 +0000 (13:41 -0700)]
xfs: prepare rmap btree cursor tracepoints for realtime

Rework the rmap btree cursor tracepoints in preparation to handle the
realtime rmap btree cursor.  Mostly this involves renaming the field to
"rmapbno" and extracting the group number from the cursor when possible.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: allow inode-based btrees to reserve space in the data device
Darrick J. Wong [Mon, 23 Sep 2024 20:41:51 +0000 (13:41 -0700)]
xfs: allow inode-based btrees to reserve space in the data device

Create a new space reservation scheme so that btree metadata for the
realtime volume can reserve space in the data device to avoid space
underruns.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: update btree keys correctly when _insrec splits an inode root block
Darrick J. Wong [Mon, 23 Sep 2024 20:41:50 +0000 (13:41 -0700)]
xfs: update btree keys correctly when _insrec splits an inode root block

In commit 2c813ad66a72, I partially fixed a bug wherein xfs_btree_insrec
would erroneously try to update the parent's key for a block that had
been split if we decided to insert the new record into the new block.
The solution was to detect this situation and update the in-core key
value that we pass up to the caller so that the caller will (eventually)
add the new block to the parent level of the tree with the correct key.

However, I missed a subtlety about the way inode-rooted btrees work.  If
the full block was a maximally sized inode root block, we'll solve that
fullness by moving the root block's records to a new block, resizing the
root block, and updating the root to point to the new block.  We don't
pass a pointer to the new block to the caller because that work has
already been done.  The new record will /always/ land in the new block,
so in this case we need to use xfs_btree_update_keys to update the keys.

This bug can theoretically manifest itself in the very rare case that we
split a bmbt root block and the new record lands in the very first slot
of the new block, though I've never managed to trigger it in practice.
However, it is very easy to reproduce by running generic/522 with the
realtime rmapbt patchset if rtinherit=1.

Fixes: 2c813ad66a72 ("xfs: support btrees with overlapping intervals for keys")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: support storing records in the inode core root
Darrick J. Wong [Mon, 23 Sep 2024 20:41:49 +0000 (13:41 -0700)]
xfs: support storing records in the inode core root

Add the necessary flags and code so that we can support storing leaf
records in the inode root block of a btree.  This hasn't been necessary
before, but the realtime rmapbt will need to be able to do this.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: hoist the node iroot update code out of xfs_btree_kill_iroot
Darrick J. Wong [Mon, 23 Sep 2024 20:41:49 +0000 (13:41 -0700)]
xfs: hoist the node iroot update code out of xfs_btree_kill_iroot

In preparation for allowing records in an inode btree root, hoist the
code that copies keyptrs from an existing node child into the root block
to a separate function.  Remove some unnecessary conditionals and clean
up a few function calls in the new function.  Note that this change
reorders the ->free_block call with respect to the change in bc_nlevels
to make it easier to support inode root leaf blocks in the next patch.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: hoist the node iroot update code out of xfs_btree_new_iroot
Darrick J. Wong [Mon, 23 Sep 2024 20:41:48 +0000 (13:41 -0700)]
xfs: hoist the node iroot update code out of xfs_btree_new_iroot

In preparation for allowing records in an inode btree root, hoist the
code that copies keyptrs from an existing node root into a child block
to a separate function.  Note that the new function explicitly computes
the keys of the new child block and stores that in the root block; while
the bmap btree could rely on leaving the key alone, realtime rmap needs
to set the new high key.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: tidy up xfs_bmap_broot_realloc a bit
Darrick J. Wong [Mon, 23 Sep 2024 20:41:47 +0000 (13:41 -0700)]
xfs: tidy up xfs_bmap_broot_realloc a bit

Hoist out the code that migrates broot pointers during a resize
operation to avoid code duplication and streamline the caller.  Also
use the correct bmbt pointer type for the sizeof operation.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: make xfs_iroot_realloc a bmap btree function
Darrick J. Wong [Mon, 23 Sep 2024 20:41:46 +0000 (13:41 -0700)]
xfs: make xfs_iroot_realloc a bmap btree function

Move the inode fork btree root reallocation function part of the btree
ops because it's now mostly bmbt-specific code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: make xfs_iroot_realloc take the new numrecs instead of deltas
Darrick J. Wong [Mon, 23 Sep 2024 20:41:45 +0000 (13:41 -0700)]
xfs: make xfs_iroot_realloc take the new numrecs instead of deltas

Change the calling signature of xfs_iroot_realloc to take the ifork and
the new number of records in the btree block, not a diff against the
current number.  This will make the callsites easier to understand.

Note that this function is misnamed because it is very specific to the
single type of inode-rooted btree supported.  This will be addressed in
a subsequent patch.

Return the new btree root to reduce the amount of code clutter.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: refactor the inode fork memory allocation functions
Darrick J. Wong [Mon, 23 Sep 2024 20:41:45 +0000 (13:41 -0700)]
xfs: refactor the inode fork memory allocation functions

Hoist the code that allocates, frees, and reallocates if_broot into a
single xfs_iroot_krealloc function.  Eventually we're going to push
xfs_iroot_realloc into the btree ops structure to handle multiple
inode-rooted btrees, but first let's separate out the bits that should
stay in xfs_inode_fork.c.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: tidy up xfs_iroot_realloc
Darrick J. Wong [Mon, 23 Sep 2024 20:41:44 +0000 (13:41 -0700)]
xfs: tidy up xfs_iroot_realloc

Tidy up this function a bit before we start refactoring the memory
handling and move the function to the bmbt code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: enable metadata directory feature
Darrick J. Wong [Mon, 23 Sep 2024 20:41:43 +0000 (13:41 -0700)]
xfs: enable metadata directory feature

Enable the metadata directory feature.  With this feature, all metadata
inodes are placed in the metadata directory, and the only inumbers in
the superblock are the roots of the two directory trees.

The RT device is now sharded into a number of rtgroups, where 0 rtgroups
mean that no RT extents are supported, and the traditional XFS stub RT
bitmap and summary inodes don't exist.  A single rtgroup gives roughly
identical behavior to the traditional RT setup, but now with checksummed
and self identifying free space metadata.

For quota, the quota options are read from the superblock unless
explicitly overridden via mount options.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: update sb field checks when metadir is turned on
Darrick J. Wong [Mon, 23 Sep 2024 20:41:42 +0000 (13:41 -0700)]
xfs: update sb field checks when metadir is turned on

When metadir is enabled, we want to check the two new rtgroups fields,
and we don't want to check the old inumbers that are now in the metadir.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: enable realtime quota again
Darrick J. Wong [Mon, 23 Sep 2024 20:20:39 +0000 (13:20 -0700)]
xfs: enable realtime quota again

Enable quotas for the realtime device.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: reserve quota for realtime files correctly
Darrick J. Wong [Fri, 4 Oct 2024 20:21:26 +0000 (13:21 -0700)]
xfs: reserve quota for realtime files correctly

Fix xfs_quota_reserve_blkres to reserve rt block quota whenever we're
dealing with a realtime file.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: create quota preallocation watermarks for realtime quota
Darrick J. Wong [Wed, 25 Sep 2024 17:48:48 +0000 (10:48 -0700)]
xfs: create quota preallocation watermarks for realtime quota

Refactor the quota preallocation watermarking code so that it'll work
for realtime quota too.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: report realtime block quota limits on realtime directories
Darrick J. Wong [Mon, 23 Sep 2024 20:20:39 +0000 (13:20 -0700)]
xfs: report realtime block quota limits on realtime directories

On the data device, calling statvfs on a projinherit directory results
in the block and avail counts being curtailed to the project quota block
limits, if any are set.  Do the same for realtime files or directories,
only use the project quota rt block limits.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: advertise realtime quota support in the xqm stat files
Darrick J. Wong [Mon, 23 Sep 2024 20:20:38 +0000 (13:20 -0700)]
xfs: advertise realtime quota support in the xqm stat files

Add a fifth column to this (really old) stat file to advertise that the
kernel supports quota for realtime volumes.  This will be used by
fstests to detect kernel support.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: fix chown with rt quota
Darrick J. Wong [Mon, 23 Sep 2024 20:20:37 +0000 (13:20 -0700)]
xfs: fix chown with rt quota

Make chown's quota adjustments work with realtime files.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: persist quota flags with metadir
Darrick J. Wong [Mon, 23 Sep 2024 20:41:42 +0000 (13:41 -0700)]
xfs: persist quota flags with metadir

It's annoying that one has to keep reminding XFS about what quota
options it should mount with, since the quota flags recording the
previous state are sitting right there in the primary superblock.  Even
more strangely, there exists a noquota option to disable quotas
completely, so it's odder still that providing no options is the same as
noquota.

Starting with metadir, let's change the behavior so that if the user
does not specify any quota-related mount options at all, the ondisk
quota flags will be used to bring up quota.  In other words, the
filesystem will mount in the same state and with the same functionality
as it had during the last mount.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: scrub quota file metapaths
Darrick J. Wong [Mon, 23 Sep 2024 20:41:41 +0000 (13:41 -0700)]
xfs: scrub quota file metapaths

Enable online fsck for quota file metadata directory paths.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: use metadir for quota inodes
Darrick J. Wong [Mon, 23 Sep 2024 20:41:40 +0000 (13:41 -0700)]
xfs: use metadir for quota inodes

Store the quota inodes in the /quota metadata directory if metadir is
enabled.  This enables us to stop using the sb_[ugp]uotino fields in the
superblock.  From this point on, all metadata files will be children of
the metadata directory tree root.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: refactor xfs_qm_destroy_quotainos
Darrick J. Wong [Mon, 23 Sep 2024 20:41:39 +0000 (13:41 -0700)]
xfs: refactor xfs_qm_destroy_quotainos

Reuse this function instead of open-coding the logic.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: use rtgroup busy extent list for FITRIM
Darrick J. Wong [Fri, 4 Oct 2024 00:16:49 +0000 (17:16 -0700)]
xfs: use rtgroup busy extent list for FITRIM

For filesystems that have rtgroups and hence use the busy extent list
for freed rt space, use that busy extent list so that FITRIM can issue
discard commands asynchronously without worrying about other callers
accidentally allocating and using space that is being discarded.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: implement busy extent tracking for rtgroups
Darrick J. Wong [Wed, 2 Oct 2024 15:52:07 +0000 (08:52 -0700)]
xfs: implement busy extent tracking for rtgroups

For rtgroups filesystems, track newly freed (rt) space through the log
until the rt EFIs have been committed to disk.  This way we ensure that
space cannot be reused until all traces of the old owner are gone.

As a fringe benefit, we now support -o discard on the realtime device.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: port the perag discard code to handle generic groups
Darrick J. Wong [Thu, 3 Oct 2024 23:09:52 +0000 (16:09 -0700)]
xfs: port the perag discard code to handle generic groups

Port xfs_discard_extents and its tracepoints to handle generic groups
instead of just perags.  This is needed to enable busy extent tracking
for rtgroups.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: move the min and max group block numbers to xfs_group
Darrick J. Wong [Tue, 8 Oct 2024 23:41:12 +0000 (16:41 -0700)]
xfs: move the min and max group block numbers to xfs_group

Move the min and max agblock numbers to the generic xfs_group structure
so that we can start building validators for extents within an rtgroup.
While we're at it, use check_add_overflow for the extent length
computation because that has much better overflow checking.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: fix minor bug in xfs_verify_agbno
Darrick J. Wong [Wed, 9 Oct 2024 00:43:56 +0000 (17:43 -0700)]
xfs: fix minor bug in xfs_verify_agbno

There's a minor bug in xfs_verify_agbno -- min_block ought to be the
first agblock number in the AG that can be used by non-static metadata.
Unfortunately, we set it to the last agblock of the static metadata.
Fortunately this works due to the <= check, but this isn't technically
correct.

Instead, change the check to < and set it to the next agblock past the
static metadata.  This hasn't been an issue up to now, but we're going
to move these things into the generic group struct, and this will cause
problems with rtgroups, where min_block can be zero for an rtgroup.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add a xfs_rtbno_is_group_start helper
Christoph Hellwig [Thu, 3 Oct 2024 20:33:37 +0000 (13:33 -0700)]
xfs: add a xfs_rtbno_is_group_start helper

Make the boundary condition flag more clear and implement it by
a single masking operation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: remove __xfs_rtb_to_rgbno
Christoph Hellwig [Thu, 3 Oct 2024 20:22:57 +0000 (13:22 -0700)]
xfs: remove __xfs_rtb_to_rgbno

Now that we have a generic mask field that has the right value for
legacy file systems, the caller can triviall open code the masking.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: add a xfs_fsb_to_gbno helper
Christoph Hellwig [Thu, 3 Oct 2024 20:17:07 +0000 (13:17 -0700)]
xfs: add a xfs_fsb_to_gbno helper

Just one more generic group helper to fold.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: move the group geometry into struct xfs_groups
Christoph Hellwig [Thu, 3 Oct 2024 20:12:08 +0000 (13:12 -0700)]
xfs: move the group geometry into struct xfs_groups

Add/move the blocks, blklog and blkmask fields to the generic groups
structure so that code can work with AGs and RTGs by just using the
right index into the array.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: make xfs_rtblock_t a segmented address like xfs_fsblock_t
Darrick J. Wong [Mon, 30 Sep 2024 20:49:00 +0000 (13:49 -0700)]
xfs: make xfs_rtblock_t a segmented address like xfs_fsblock_t

Now that we've finished adding allocation groups to the realtime volume,
let's make the file block mapping address (xfs_rtblock_t) a segmented
value just like we do on the data device.  This means that group number
and block number conversions can be done with shifting and masking
instead of integer division.

While in theory we could continue caching the rgno shift value in
m_rgblklog, the fact that we now always use the shift value means that
we have an opportunity to increase the redundancy of the rt geometry by
storing it in the ondisk superblock and adding more sb verifier code.
Reuse the space vacated by sb_bad_feature2 to store the rgblklog value.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: create helpers to deal with rounding xfs_filblks_t to rtx boundaries
Darrick J. Wong [Mon, 30 Sep 2024 20:47:22 +0000 (13:47 -0700)]
xfs: create helpers to deal with rounding xfs_filblks_t to rtx boundaries

We're about to segment xfs_rtblock_t addresses, so we must create
type-specific helpers to do rt extent rounding of file mapping block
lengths because the rtb helpers soon will not do the right thing there.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: create helpers to deal with rounding xfs_fileoff_t to rtx boundaries
Darrick J. Wong [Mon, 30 Sep 2024 20:43:12 +0000 (13:43 -0700)]
xfs: create helpers to deal with rounding xfs_fileoff_t to rtx boundaries

We're about to segment xfs_rtblock_t addresses, so we must create
type-specific helpers to do rt extent rounding of file block offsets
because the rtb helpers soon will not do the right thing there.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: mask off the rtbitmap and summary inodes when metadir in use
Darrick J. Wong [Mon, 23 Sep 2024 20:41:39 +0000 (13:41 -0700)]
xfs: mask off the rtbitmap and summary inodes when metadir in use

Set the rtbitmap and summary file inumbers to NULLFSINO in the
superblock and make sure they're zeroed whenever we write the superblock
to disk, to mimic mkfs behavior.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: scrub metadir paths for rtgroup metadata
Darrick J. Wong [Mon, 23 Sep 2024 20:41:38 +0000 (13:41 -0700)]
xfs: scrub metadir paths for rtgroup metadata

Add the code we need to scan the metadata directory paths of rt group
metadata files.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: repair realtime group superblock
Darrick J. Wong [Mon, 23 Sep 2024 20:41:37 +0000 (13:41 -0700)]
xfs: repair realtime group superblock

Repair the realtime superblock if it has become out of date with the
primary superblock.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: scrub the realtime group superblock
Darrick J. Wong [Mon, 23 Sep 2024 20:41:36 +0000 (13:41 -0700)]
xfs: scrub the realtime group superblock

Enable scrubbing of realtime group superblocks.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: don't coalesce file mappings that cross rtgroup boundaries in scrub
Darrick J. Wong [Mon, 23 Sep 2024 20:41:35 +0000 (13:41 -0700)]
xfs: don't coalesce file mappings that cross rtgroup boundaries in scrub

The bmbt scrubber will combine file mappings if they are mergeable to
reduce the number of cross-referencing checks.  However, we shouldn't
combine mappings that cross rt group boundaries because that will cause
verifiers to trip incorrectly.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: make the RT allocator rtgroup aware
Christoph Hellwig [Mon, 23 Sep 2024 20:41:35 +0000 (13:41 -0700)]
xfs: make the RT allocator rtgroup aware

Make the allocator rtgroup aware by either picking a specific group if
there is a hint, or loop over all groups otherwise.  A simple rotor is
provided to pick the placement for initial allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: don't merge ioends across RTGs
Christoph Hellwig [Mon, 23 Sep 2024 20:41:34 +0000 (13:41 -0700)]
xfs: don't merge ioends across RTGs

Unlike AGs, RTGs don't always have metadata in their first blocks, and
thus we don't get automatic protection from merging I/O completions
across RTG boundaries.  Add code to set the IOMAP_F_BOUNDARY flag for
ioends that start at the first block of a RTG so that they never get
merged into the previous ioend.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: use realtime EFI to free extents when rtgroups are enabled
Darrick J. Wong [Mon, 23 Sep 2024 20:41:33 +0000 (13:41 -0700)]
xfs: use realtime EFI to free extents when rtgroups are enabled

When rmap is enabled, XFS expects a certain order of operations, which
is: 1) remove the file mapping, 2) remove the reverse mapping, and then
3) free the blocks.  When reflink is enabled, XFS replaces (3) with a
deferred refcount decrement operation that can schedule freeing the
blocks if that was the last refcount.

For realtime files, xfs_bmap_del_extent_real tries to do 1 and 3 in the
same transaction, which will break both rmap and reflink unless we
switch it to use realtime EFIs.  Both rmap and reflink depend on the
rtgroups feature, so let's turn on EFIs for all rtgroups filesystems.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: support error injection when freeing rt extents
Darrick J. Wong [Mon, 23 Sep 2024 20:41:32 +0000 (13:41 -0700)]
xfs: support error injection when freeing rt extents

A handful of fstests expect to be able to test what happens when extent
free intents fail to actually free the extent.  Now that we're
supporting EFIs for realtime extents, add to xfs_rtfree_extent the same
injection point that exists in the regular extent freeing code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: support logging EFIs for realtime extents
Darrick J. Wong [Mon, 23 Sep 2024 20:41:31 +0000 (13:41 -0700)]
xfs: support logging EFIs for realtime extents

Teach the EFI mechanism how to free realtime extents.  We're going to
need this to enforce proper ordering of operations when we enable
realtime rmap.

Declare a new log intent item type (XFS_LI_EFI_RT) and a separate defer
ops for rt extents.  This keeps the ondisk artifacts and processing code
completely separate between the rt and non-rt cases.  Hopefully this
will make it easier to debug filesystem problems.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: force swapext to a realtime file to use the file content exchange ioctl
Darrick J. Wong [Mon, 23 Sep 2024 20:41:31 +0000 (13:41 -0700)]
xfs: force swapext to a realtime file to use the file content exchange ioctl

xfs_swap_extent_rmap does not use log items to track the overall
progress of an attempt to swap the extent mappings between two files.
If the system crashes in the middle of swapping a partially written
realtime extent, the mapping will be left in an inconsistent state
wherein a file can point to multiple extents on the rt volume.

The new file range exchange functionality handles this correctly, so all
callers must upgrade to that.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: store rtgroup information with a bmap intent
Darrick J. Wong [Fri, 4 Oct 2024 17:09:22 +0000 (10:09 -0700)]
xfs: store rtgroup information with a bmap intent

Make the bmap intent items take an active reference to the rtgroup
containing the space that is being mapped or unmapped.  We will need
this functionality once we start enabling rmap and reflink on the rt
volume.  Technically speaking we need it even for !rtgroups filesystems
to prevent the (dummy) rtgroup 0 from going away, even though this will
never happen.

As a bonus, we can rework the xfs_bmap_deferred_class tracepoint to use
the xfs_group object to figure out the type and group number, widen the
group block number field to fit 64-bit quantities, and get rid of the
now redundant opdev and rtblock fields.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 months agoxfs: grow the realtime section when realtime groups are enabled
Darrick J. Wong [Mon, 23 Sep 2024 20:41:29 +0000 (13:41 -0700)]
xfs: grow the realtime section when realtime groups are enabled

Enable growing the rt section when realtime groups are enabled.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: encode the rtsummary in big endian format
Darrick J. Wong [Mon, 23 Sep 2024 20:41:28 +0000 (13:41 -0700)]
xfs: encode the rtsummary in big endian format

Currently, the ondisk realtime summary file counters are accessed in
units of 32-bit words.  There's no endian translation of the contents of
this file, which means that the Bad Things Happen(tm) if you go from
(say) x86 to powerpc.  Since we have a new feature flag, let's take the
opportunity to enforce an endianness on the file.  Encode the summary
information in big endian format, like most of the rest of the
filesystem.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: encode the rtbitmap in big endian format
Darrick J. Wong [Mon, 23 Sep 2024 20:41:27 +0000 (13:41 -0700)]
xfs: encode the rtbitmap in big endian format

Currently, the ondisk realtime bitmap file is accessed in units of
32-bit words.  There's no endian translation of the contents of this
file, which means that the Bad Things Happen(tm) if you go from (say)
x86 to powerpc.  Since we have a new feature flag, let's take the
opportunity to enforce an endianness on the file.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: add block headers to realtime bitmap and summary blocks
Darrick J. Wong [Mon, 23 Sep 2024 20:41:27 +0000 (13:41 -0700)]
xfs: add block headers to realtime bitmap and summary blocks

Upgrade rtbitmap and rtsummary blocks to have self describing metadata
like most every other thing in XFS.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: export the geometry of realtime groups to userspace
Darrick J. Wong [Mon, 23 Sep 2024 20:41:26 +0000 (13:41 -0700)]
xfs: export the geometry of realtime groups to userspace

Create an ioctl so that the kernel can report the status of realtime
groups to userspace.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
6 months agoxfs: record rt group metadata errors in the health system
Darrick J. Wong [Mon, 23 Sep 2024 20:41:25 +0000 (13:41 -0700)]
xfs: record rt group metadata errors in the health system

Record the state of per-rtgroup metadata sickness in the rtgroup
structure for later reporting.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>