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tests: add comments to fsadm-renamed

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to explain the what and why of the steps that are
not obvious
This commit is contained in:
David Teigland 2022-10-11 11:28:19 -05:00
parent 657df00c96
commit fc52e87f06
1 changed files with 15 additions and 0 deletions
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15
test/shell/fsadm-renamed.sh
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@ -83,29 +83,44 @@ echo "$i"
# https://github.com/systemd/systemd/pull/2017 # https://github.com/systemd/systemd/pull/2017
aux udev_wait aux udev_wait
# mount /dev/test/lv1 on /mnt
mount "$dev_vg_lv" "$mount_dir" mount "$dev_vg_lv" "$mount_dir"
aux udev_wait aux udev_wait
# rename lv1 to lv1_renamed, now /dev/test/lv1_renamed is mounted on /mnt,
# but "df" and "mount" commands will still show /dev/test/lv1 mounted on /mnt.
lvrename $vg_lv $vg_lv_ren lvrename $vg_lv $vg_lv_ren
check_mounted check_mounted
# fails on renamed LV # fails on renamed LV
# lvextend -r test/lv1_renamed succeeds in extending the LV (as lv1_renamed),
# but xfs_growfs /dev/test/lv1_renamed fails because it doesn't recognize
# that device is mounted, because the old lv name reported as being mounted.
fail lvresize -y -L+10M -r $vg_lv_ren fail lvresize -y -L+10M -r $vg_lv_ren
# fails on unknown mountpoint (FIXME: umount) # fails on unknown mountpoint (FIXME: umount)
not umount "$dev_vg_lv" not umount "$dev_vg_lv"
# create a new LV with the previous name of the renamed lv
lvcreate -L300 -n $lv1 $vg lvcreate -L300 -n $lv1 $vg
"$i" $MKFS_ARGS "$dev_vg_lv" "$i" $MKFS_ARGS "$dev_vg_lv"
aux udev_wait aux udev_wait
# mount the new lv on a dir with a similar name as the other
# now df will show
# /dev/mapper/test-lv1 ... /mnt
# /dev/mapper/test-lv1 ... /mnt $SPACE dir
mount "$dev_vg_lv" "$mount_dolar_dir" mount "$dev_vg_lv" "$mount_dolar_dir"
check_mounted check_mounted
# try to resize the LV that was renamed: lvextend -r test/lv1_renamed
# this succeeds in extending the LV (lv1_renamed), but xfs_growfs fails
# for the same reason as above, i.e. mount doesn't show the lv1_renamed
# device is mounted anywhere.
not lvresize -L+10M -r $vg_lv_ren not lvresize -L+10M -r $vg_lv_ren
umount "$mount_dir" umount "$mount_dir"