kernel.git/Documentation/admin-guide/xfs.rst, branch linux-6.3.y

xfs: allow setting full range of panic tags

2023-02-10T02:36:17Z

xfs will not allow combining other panic masks with XFS_PTAG_VERIFIER_ERROR. # sysctl fs.xfs.panic_mask=511 sysctl: setting key "fs.xfs.panic_mask": Invalid argument fs.xfs.panic_mask = 511 Update to the maximum value that can be set to allow the full range of masks. Do this using a mask of possible values to prevent this happening again as suggested by Darrick. Fixes: d519da41e2b7 ("xfs: Introduce XFS_PTAG_VERIFIER_ERROR panic mask") Signed-off-by: Donald Douwsma Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner

xfs: rename the blockgc workqueue

2021-03-25T23:47:50Z

Since we're about to start using the blockgc workqueue to dispose of inactivated inodes, strip the "block" prefix from the name; now it's merely the general garbage collection (gc) workqueue. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig

xfs: restore speculative_cow_prealloc_lifetime sysctl

2021-02-24T18:16:08Z

In commit 9669f51de5c0 I tried to get rid of the undocumented cow gc lifetime knob. The knob's function was never documented and it now doesn't really have a function since eof and cow gc have been consolidated. Regrettably, xfs/231 relies on it and regresses on for-next. I did not succeed at getting far enough through fstests patch review for the fixup to land in time. Restore the sysctl knob, document what it did (does?), put it on the deprecation schedule, and rip out a redundant function. Fixes: 9669f51de5c0 ("xfs: consolidate the eofblocks and cowblocks workers") Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Reviewed-by: Christoph Hellwig

xfs: fix rst syntax error in admin guide

2021-02-09T17:16:44Z

Tables are supposed to have a matching line of "===" to signal the end of a table. The rst compiler gets grouchy if it encounters EOF instead, so fix this warning. Reported-by: Stephen Rothwell Signed-off-by: Darrick J. Wong Reviewed-by: Eric Sandeen Reviewed-by: Chaitanya Kulkarni

xfs: expose the blockgc workqueue knobs publicly

2021-02-03T17:18:50Z

Expose the workqueue sysfs knobs for the speculative preallocation gc workers on all kernels, and update the sysadmin information. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig

xfs: increase the default parallelism levels of pwork clients

2021-02-03T17:18:49Z

Increase the parallelism level for pwork clients to the workqueue defaults so that we can take advantage of computers with a lot of CPUs and a lot of hardware. On fast systems this will speed up quotacheck by a large factor, and the following posteof/cowblocks cleanup series will use the functionality presented in this patch to run garbage collection as quickly as possible. We do this by switching the pwork workqueue to unbounded, since the current user (quotacheck) runs lengthy scans for each work item and we don't care about dispatching the work on a warm cpu cache or anything like that. Also set WQ_SYSFS so that we can monitor where the wq is running. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Reviewed-by: Brian Foster

xfs: remove deprecated sysctl options

2020-09-25T18:34:08Z

These optionr were for Irix compatibility, probably for clustered XFS clients in a heterogenous cluster which contained both Irix & Linux machines, so that behavior would be consistent. That doesn't exist anymore and it's no longer needed. Signed-off-by: Pavel Reichl Reviewed-by: Darrick J. Wong [darrick: actually state when the sysctls go away] Signed-off-by: Darrick J. Wong

xfs: remove deprecated mount options

2020-09-25T18:34:08Z

ikeep/noikeep was a workaround for old DMAPI code which is no longer relevant. attr2/noattr2 - is for controlling upgrade behaviour from fixed attribute fork sizes in the inode (attr1) and dynamic attribute fork sizes (attr2). mkfs has defaulted to setting attr2 since 2007, hence just about every XFS filesystem out there in production right now uses attr2. Signed-off-by: Pavel Reichl Reviewed-by: Darrick J. Wong [darrick: fix minor typos] Signed-off-by: Darrick J. Wong

xfs: deprecate the V4 format

2020-09-16T03:52:43Z

The V4 filesystem format contains known weaknesses in the on-disk format that make metadata verification diffiult. In addition, the format does not support dates past 2038 and will not be upgraded to do so. We should start the process of retiring the old format to close off attack surfaces and to encourage users to migrate onto V5. Therefore, make XFS V4 support a configurable option. For the first period it will be default Y in case some distributors want to withdraw support early; for the second period it will be default N so that anyone who wishes to continue support can do so; and after that, support will be removed from the kernel. Dates for these events have been added to the upstream kernel. Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Reviewed-by: Eric Sandeen

Documentation/admin-guide: xfs: drop doubled word

2020-07-05T20:01:49Z

Drop the doubled word "for". Signed-off-by: Randy Dunlap Reviewed-by: Darrick J. Wong Cc: Jonathan Corbet Cc: linux-doc@vger.kernel.org Cc: Darrick J. Wong Cc: linux-xfs@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-14-rdunlap@infradead.org Signed-off-by: Jonathan Corbet