On 2023-07-03 10:03:38, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > If I have a realtime volume configured, this test will sometimes trip > over this: > > XFS: Assertion failed: nmaps == 1, file: fs/xfs/xfs_dquot.c, line: 360 > Call Trace: > xfs_dquot_disk_alloc+0x3dc/0x400 [xfs 97e1fa8953d397b1fb9732df4de7fa9070bda501] > xfs_qm_dqread+0xc9/0x190 [xfs 97e1fa8953d397b1fb9732df4de7fa9070bda501] > xfs_qm_dqget+0xa8/0x230 [xfs 97e1fa8953d397b1fb9732df4de7fa9070bda501] > xfs_qm_vop_dqalloc+0x160/0x600 [xfs 97e1fa8953d397b1fb9732df4de7fa9070bda501] > xfs_setattr_nonsize+0x318/0x520 [xfs 97e1fa8953d397b1fb9732df4de7fa9070bda501] > notify_change+0x30e/0x490 > chown_common+0x13e/0x1f0 > do_fchownat+0x8d/0xe0 > __x64_sys_fchownat+0x1b/0x20 > do_syscall_64+0x2b/0x80 > entry_SYSCALL_64_after_hwframe+0x46/0xb0 > RIP: 0033:0x7fa6985e2cae > > The test injects the bmap_alloc_minlen_extent error, which refuses to > allocate file space unless it's exactly minlen long. However, a > precondition of this injection point is that the free space on the data > device must be sufficiently fragmented that there are small free > extents. > > However, if realtime and rtinherit are enabled, the punch-alternating > call will operate on a realtime file, which only serves to write 0x55 > patterns into the realtime bitmap. Hence the test preconditions are not > satisfied, so the test is not serving its purpose. > > Fix it by disabling rtinherit=1 on the rootdir so that we actually > fragment the bnobt/cntbt as required. > > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> > --- > tests/xfs/529 | 4 ++++ > 1 file changed, 4 insertions(+) > > > diff --git a/tests/xfs/529 b/tests/xfs/529 > index 83d24da0ac..cd176877f5 100755 > --- a/tests/xfs/529 > +++ b/tests/xfs/529 > @@ -32,6 +32,10 @@ echo "Format and mount fs" > _scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full > _scratch_mount -o uquota >> $seqres.full > > +# bmap_alloc_minlen_extent only applies to the datadev space allocator, so > +# we force the filesystem not to use the realtime volume. > +_xfs_force_bdev data $SCRATCH_MNT > + Looks good to me: Reviewed-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx> -- - Andrey
