[PATCH v6 1/3] common/xfs: add _require_xfs_scratch_shrink helper
From: Gao Xiang <hidden>
Date: 2021-05-11 23:32:56
Also in:
linux-xfs
Subsystem:
the rest · Maintainer:
Linus Torvalds
In order to detect whether the current kernel supports XFS shrinking. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <redacted> --- common/xfs | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/common/xfs b/common/xfs
index 69f76d6e..a0a4032a 100644
--- a/common/xfs
+++ b/common/xfs@@ -766,6 +766,26 @@ _require_xfs_mkfs_without_validation() fi } +_require_xfs_scratch_shrink() +{ + _require_scratch + _require_command "$XFS_GROWFS_PROG" xfs_growfs + + _scratch_mkfs_xfs | _filter_mkfs 2>$tmp.mkfs >/dev/null + . $tmp.mkfs + _scratch_mount + # here just to check if kernel supports, no need do more extra work + errmsg=$($XFS_GROWFS_PROG -D$((dblocks-1)) "$SCRATCH_MNT" 2>&1) + if [ "$?" -ne 0 ]; then + echo "$errmsg" | grep 'XFS_IOC_FSGROWFSDATA xfsctl failed: Invalid argument' > /dev/null && \ + _notrun "kernel does not support shrinking" + echo "$errmsg" | grep 'data size .* too small, old size is ' > /dev/null && \ + _notrun "xfsprogs does not support shrinking" + _fail "$XFS_GROWFS_PROG failed unexpectedly: $errmsg" + fi + _scratch_unmount +} + # XFS ability to change UUIDs on V5/CRC filesystems # _require_meta_uuid()
--
2.27.0