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nuke-graph-directory.sh: Improve subvolume search

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This change allows btrfs subvolumes to be found in additional system
configurations. The old logic failed to correctly identify subvolumes
when the root fs was mounted as a subvolume that was not the btrfs
filesystem root.

Signed-off-by: Adam Mills <adam@armills.info>
This commit is contained in:
Adam Mills 2016-07-28 14:25:20 -04:00
parent 8a8a63aa32
commit c3aa75c5a7
1 changed files with 4 additions and 7 deletions
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11
contrib/nuke-graph-directory.sh
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@ -51,13 +51,10 @@ done
# now, let's go destroy individual btrfs subvolumes, if any exist
if command -v btrfs > /dev/null 2>&1; then
root="$(df "$dir" | awk 'NR>1 { print $NF }')"
root="${root%/}" # if root is "/", we want it to become ""
for subvol in $(btrfs subvolume list -o "$root/" 2>/dev/null | awk -F' path ' '{ print $2 }' | sort -r); do
subvolDir="$root/$subvol"
if dir_in_dir "$subvolDir" "$dir"; then
( set -x; btrfs subvolume delete "$subvolDir" )
fi
# Find btrfs subvolumes under $dir checking for inode 256
# Source: http://stackoverflow.com/a/32865333
for subvol in $(find "$dir" -type d -inum 256 | sort -r); do
( set -x; btrfs subvolume delete "$subvol" )
done
fi