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lv_manip: handle swap devices in fs-related checks for lvreduce/lvextend

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This provides better hints when trying to resize the fs on top of an LV.
Also needs a3f6d2f593 for proper operation.

❯  lvs -o name,size vg/swap
  lv_name lv_size
  swap     60.00m

Before:

❯  lvextend -L72m vg/swap
  Size of logical volume vg/swap changed from 60.00 MiB (15 extents) to 72.00 MiB (18 extents).
  Logical volume vg/swap successfully resized.

❯  lvreduce -L60m vg/swap
  File system swap found on vg/swap.
  File system device usage is not available from libblkid.

❯  lvreduce -L50m vg/swap
  Rounding size to boundary between physical extents: 52.00 MiB.
  File system swap found on vg/swap.
  File system device usage is not available from libblkid.

After:

❯  lvextend -L72m vg/swap
  Size of logical volume vg/swap changed from 60.00 MiB (15 extents) to 72.00 MiB (18 extents).
  Logical volume vg/swap successfully resized.

❯  lvreduce -L60m vg/swap
  File system swap found on vg/swap.
  File system size (60.00 MiB) is equal to the requested size (60.00 MiB).
  File system reduce is not needed, skipping.
  Size of logical volume vg/swap changed from 72.00 MiB (18 extents) to 60.00 MiB (15 extents).
  Logical volume vg/swap successfully resized.

❯  lvreduce -L50m vg/swap
  Rounding size to boundary between physical extents: 52.00 MiB.
  File system swap found on vg/swap.
  File system size (60.00 MiB) is larger than the requested size (52.00 MiB).
  File system reduce is required and not supported (swap).
This commit is contained in:
Peter Rajnoha 2024-09-19 12:45:25 +02:00
parent e009becd73
commit 5096335277
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GPG Key ID: E776664036DF84AB
1 changed files with 4 additions and 0 deletions
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4
lib/metadata/lv_manip.c
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@ -6144,6 +6144,8 @@ static int _fs_reduce_allow(struct cmd_context *cmd, struct logical_volume *lv,
if (fsi->mounted)
fsi->needs_unmount = 1;
fsi->needs_reduce = 1;
} else if (!strcmp(fsi->fstype, "swap")) {
fsi->needs_reduce = 1;
} else {
/*
@ -6314,6 +6316,8 @@ static int _fs_extend_allow(struct cmd_context *cmd, struct logical_volume *lv,
if (lp->nofsck)
fsi->needs_fsck = 0;
} else if (!strcmp(fsi->fstype, "swap")) {
fsi->needs_extend = 1;
} else if (!strcmp(fsi->fstype, "xfs")) {
fs_extend_cmd = " xfs_growfs";