Darrick J. Wong [Thu, 22 Aug 2024 16:43:34 +0000 (09:43 -0700)]
xfs_repair: refactor quota inumber handling
In preparation for putting quota files in the metadata directory tree,
refactor repair's quota inumber handling to use its own variables
instead of the xfs_mount's.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 22 Aug 2024 16:00:00 +0000 (09:00 -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>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:32 +0000 (11:56 -0700)]
mkfs: add headers to realtime bitmap blocks
When the rtgroups feature is enabled, format rtbitmap blocks with the
appropriate block headers. libxfs takes care of the actual writing for
us, so all we have to do is ensure that the bitmap is the correct size.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:32 +0000 (11:56 -0700)]
xfs_scrub: trim realtime volumes too
On the kernel side, the XFS realtime groups patchset added support for
FITRIM of the realtime volume. This support doesn't actually require
there to be any realtime groups, so teach scrub to run through the whole
region.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Run the rtgroup metapath scrubber during phase 5 to ensure that any
rtgroup metadata files are still connected to the metadir tree after
we've pruned any bad links.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:31 +0000 (11:56 -0700)]
xfs_scrub: scrub realtime allocation group metadata
Scan realtime group metadata as part of phase 2, just like we do for AG
metadata. For pre-rtgroup filesystems, pretend that this is a "rtgroup
0" scrub request because the kernel expects that. Replace the old
cond_wait code with a scrub barrier because they're equivalent for two
items that cannot be scrubbed in parallel.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 26 Sep 2024 20:39:07 +0000 (13:39 -0700)]
xfs_db: report rt group and block number in the bmap command
The bmap command does not report startblocks for realtime files
correctly. If rtgroups are enabled, we need to use the appropriate
functions to crack the startblock into rtgroup and block numbers; if
not, then we need to report a linear address and not try to report a
group number.
Fix both of these issues.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:29 +0000 (11:56 -0700)]
xfs_db: metadump realtime devices
Teach the metadump device to dump the filesystem metadata of a realtime
device to the metadump file. Currently, this is limited to the realtime
superblock.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Christoph Hellwig [Thu, 15 Aug 2024 18:56:28 +0000 (11:56 -0700)]
xfs_db: metadump metadir rt bitmap and summary files
Don't skip dumping the data fork for regular files that are marked as
metadata inodes. This catches rtbitmap and summary inodes on rtgroup
enabled file systems where their inode numbers aren't recorded in the
superblock.
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>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:26 +0000 (11:56 -0700)]
xfs_repair: find and clobber rtgroup bitmap and summary files
On a rtgroups filesystem, if the rtgroups bitmap or summary files are
garbage, we need to clear the dinode and update the incore bitmap so
that we don't bother to check the old rt freespace metadata.
However, we regenerate the entire rt metadata directory tree during
phase 6. If the bitmap and summary files are ok, we still want to clear
the dinode, but we can still use the incore inode to check the old
freespace contents. Split the clear_dinode function into two pieces,
one that merely zeroes the inode, and the old clear_dinode now turns off
checking.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Christoph Hellwig [Thu, 15 Aug 2024 18:56:26 +0000 (11:56 -0700)]
xfs_repair: support realtime groups
Make repair aware of multiple rtgroups. This now uses the same code as the
AG-based data device for block usage tracking instead of the less optimal
AVL trees and bitmaps used for the traditonal RT device.
Note this is still a bit hacky at the moment by just going beyond the AG
arrays and not fully supporting the unknown state for RT allocation yet.
The next patch will clean this up.
All this should be fixable.
Large parts of the code are based on patches from Darrick J. Wong.
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>
Christoph Hellwig [Thu, 15 Aug 2024 19:36:16 +0000 (12:36 -0700)]
xfs_repair: simplify rt_lock handling
No need to cacheline align rt_lock if we move it next to the data
it protects. Also reduce the critical section to just where those
data structures are accessed.
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>
Improve the reporting of discrepancies in the realtime bitmap and
summary files by creating a separate helper function that will pinpoint
the exact (word) locations of mismatches. This will help developers to
diagnose problems with the rtgroups feature and users to figure out
exactly what's bad in a filesystem.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:25 +0000 (11:56 -0700)]
libxfs: implement some sanity checking for enormous rgcount
Similar to what we do for suspiciously large sb_agcount values, if
someone tries to get libxfs to load a filesystem with a very large
realtime group count, let's do some basic checks of the rt device to
see if it's really that large. If the read fails, only load the first
rtgroup and warn the user.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Darrick J. Wong [Tue, 1 Oct 2024 23:02:10 +0000 (16:02 -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>
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>
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>
Darrick J. Wong [Mon, 23 Sep 2024 20:41:23 +0000 (13:41 -0700)]
xfs: add frextents to the lazysbcounters when rtgroups enabled
Make the free rt extent count a part of the lazy sb counters when the
realtime groups feature is enabled. This is possible because the patch
to recompute frextents from the rtbitmap during log recovery predates
the code adding rtgroup support, hence we know that the value will
always be correct during runtime.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Except for the rt superblock, realtime groups do not store any metadata
at the start (or end) of the group. There is nothing to prevent the
bmap code from merging allocations from multiple groups into a single
bmap record. Add a helper to check for this case.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
[djwong: massage the commit message after pulling this into rtgroups] Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Tue, 1 Oct 2024 23:14:51 +0000 (16:14 -0700)]
xfs: update realtime super every time we update the primary fs super
Every time we update parts of the primary filesystem superblock that are
echoed in the rt superblock, we must update the rt super. Avoid
changing the log to support logging to the rt device by using ordered
buffers.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Darrick J. Wong [Mon, 30 Sep 2024 18:35:46 +0000 (11:35 -0700)]
xfs: define the format of rt groups
Define the ondisk format of realtime group metadata, and a superblock
for realtime volumes. rt supers are conditionally enabled by a
predicate function so that they can be disabled if we ever implement
zoned storage support for the realtime volume.
For rt group enabled file systems there is a separate bitmap and summary
file for each group and thus the number of bitmap and summary blocks
needs to be calculated differently.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Darrick J. Wong [Thu, 15 Aug 2024 18:56:17 +0000 (11:56 -0700)]
libxfs: use correct rtx count to block count conversion
Fix a place where we use the wrong conversion functions to convert
between a number of rt extents and a number of rt blocks. This isn't
really necessary since userspace cannot allocate rt extents, but let's
not leave a logic bomb.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Christoph Hellwig [Mon, 23 Sep 2024 20:41:17 +0000 (13:41 -0700)]
xfs: make RT extent numbers relative to the rtgroup
To prepare for adding per-rtgroup bitmap files, make the xfs_rtxnum_t
type encode the RT extent number relative to the rtgroup. The biggest
part of this to clearly distinguish between the relative extent number
that gets masked when converting from a global block number and length
values that just have a factor applied to them when converting from
file system blocks.
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>
Christoph Hellwig [Mon, 23 Sep 2024 20:41:16 +0000 (13:41 -0700)]
xfs: refactor xfs_rtsummary_blockcount
Make xfs_rtsummary_blockcount take all the required information from
the mount structure and return the number of summary levels from it
as well. This cleans up many of the callers and prepares for making the
rtsummary files per-rtgroup where they need to look at different value.
This means we recalculate some values in some callers, but as all these
calculations are outside the fast path and cheap, which seems like a
price worth paying.
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>
Christoph Hellwig [Mon, 23 Sep 2024 20:41:16 +0000 (13:41 -0700)]
xfs: refactor xfs_rtbitmap_blockcount
Rename the existing xfs_rtbitmap_blockcount to
xfs_rtbitmap_blockcount_len and add a new xfs_rtbitmap_blockcount wrapper
around it that takes the number of extents from the mount structure.
This will simplify the move to per-rtgroup bitmaps as those will need to
pass in the number of extents per rtgroup instead.
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>
Christoph Hellwig [Wed, 9 Oct 2024 18:11:33 +0000 (11:11 -0700)]
xfs: support creating per-RTG files in growfs
To support adding new RT groups in growfs, we need to be able to create
the per-RT group files. Add a new xfs_rtginode_create helper to create
a given per-RTG file. Most of the code for that is shared, but the
details of the actual file are abstracted out using a new create method
in struct xfs_rtginode_ops.
[Note: this could probably move significantly later in the series] Signed-off-by: Christoph Hellwig <hch@lst.de>
Christoph Hellwig [Wed, 9 Oct 2024 18:11:30 +0000 (11:11 -0700)]
xfs: move RT bitmap and summary information to the rtgroup
Move the pointers to the RT bitmap and summary inodes as well as the
summary cache to the rtgroups structure to prepare for having a
separate bitmap and summary inodes for each rtgroup.
Code using the inodes now needs to operate on a rtgroup. Where easily
possible such code is converted to iterate over all rtgroups, else
rtgroup 0 (the only one that can currently exist) is hardcoded.
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>
Darrick J. Wong [Mon, 23 Sep 2024 20:41:08 +0000 (13:41 -0700)]
xfs: add a lockdep class key for rtgroup inodes
Add a dynamic lockdep class key for rtgroup inodes. This will enable
lockdep to deduce inconsistencies in the rtgroup metadata ILOCK locking
order. Each class can have 8 subclasses, and for now we will only have
2 inodes per group. This enables rtgroup order and inode order checks
when nesting ILOCKs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Darrick J. Wong [Mon, 23 Sep 2024 20:41:08 +0000 (13:41 -0700)]
xfs: define locking primitives for realtime groups
Define helper functions to lock all metadata inodes related to a
realtime group. There's not much to look at now, but this will become
important when we add per-rtgroup metadata files and online fsck code
for them.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Darrick J. Wong [Mon, 23 Sep 2024 20:41:07 +0000 (13:41 -0700)]
xfs: create incore realtime group structures
Create an incore object that will contain information about a realtime
allocation group. This will eventually enable us to shard the realtime
section in a similar manner to how we shard the data section, but for
now just a single object for the entire RT subvolume is created.
Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Christoph Hellwig [Wed, 7 Aug 2024 23:01:57 +0000 (16:01 -0700)]
xfs_repair: refactor generate_rtinfo
Move the allocation of the computed values into generate_rtinfo, and thus
make the variables holding them private in rt.c, and clean up a few
formatting nits.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
[djwong: move functions to fix build errors] Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This is due to an incorrect check in xfs_repair, which tries to validate
that a block mapping cannot exceed what it thinks is the maximum file
offset. Unfortunately, the check is wrong, because only br_startoff is
subject to the 2^52-1 limit -- not br_startoff + br_blockcount.
Nowadays libxfs provides a symbol XFS_MAX_FILEOFF for the maximum
allowable file block offset that can be mapped into a file. Use this
instead of the open-coded logic in versions.c and correct all the other
checks. Note that this problem only surfaced when rtgroups were enabled
because hch changed xfs_repair to use the same tree-based block state
data structure that we use for AGs when rtgroups are enabled.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Wed, 7 Aug 2024 22:54:07 +0000 (15:54 -0700)]
xfs_repair: do not count metadata directory files when doing quotacheck
Previously, we stated that files in the metadata directory tree are not
counted in the dquot information. Fix the offline quotacheck code in
xfs_repair and xfs_check to reflect this.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Darrick J. Wong [Wed, 7 Aug 2024 22:54:06 +0000 (15:54 -0700)]
xfs_repair: truncate and unmark orphaned metadata inodes
If an inode claims to be a metadata inode but wasn't linked in either
directory tree, remove the attr fork and reset the data fork if the
contents weren't regular extent mappings before moving the inode to the
lost+found.
We don't ifree the inode, because it's possible that the inode was not
actually a metadata inode but simply got corrupted due to bitflips or
something, and we'd rather let the sysadmin examine what's left of the
file instead of photorec'ing it.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
projects / users / hch / xfsprogs.git / log