52 lines
2.5 KiB
Bash
52 lines
2.5 KiB
Bash
sectors() { cat "/sys/class/block/$1/$2" 2>/dev/null || echo 0; }
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mib() { echo $(( $(sectors "$1" size) / 2048 )); }
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ptype() { lsblk -dno PARTTYPE "/dev/$1" 2>/dev/null | tr 'A-Z' 'a-z' | tr -d ' '; }
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SWAP_GUID=0657fd6d-a4ab-43c4-84e5-0933c84b4f4f
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# A snapshot on the Btrfs filesystem of /dev/loop41 holds a file that its
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# source subvolume no longer has.
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btrfs_ok() {
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local m rc=1 line uuid puuid path src f
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m=$(mktemp -d)
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mount -o ro,subvolid=5 /dev/loop41 "$m" 2>/dev/null || { rmdir "$m"; return 1; }
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declare -A byuuid
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while read -r line; do
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uuid=$(sed -n 's/.* uuid \([^ ]*\) .*/\1/p' <<<"$line")
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path=$(sed -n 's/.* path \(.*\)$/\1/p' <<<"$line")
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byuuid[$uuid]=${path#<FS_TREE>/}
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done < <(btrfs subvolume list -u "$m" 2>/dev/null)
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while read -r line; do
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puuid=$(sed -n 's/.* parent_uuid \([^ ]*\) .*/\1/p' <<<"$line")
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path=$(sed -n 's/.* path \(.*\)$/\1/p' <<<"$line"); path=${path#<FS_TREE>/}
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src=${byuuid[$puuid]:-}
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[ -n "$src" ] || continue
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while read -r f; do
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[ -e "$m/$src/$f" ] || { rc=0; break 2; }
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done < <(cd "$m/$path" && find . -xdev -type f)
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done < <(btrfs subvolume list -u -q "$m" 2>/dev/null)
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umount "$m"; rmdir "$m"
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return $rc
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}
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task 1 "GPT on /dev/loop40: 1 GiB, 512 MiB swap type, and the rest"
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need "/dev/loop40 has a GPT partition table" '[ "$(blkid -p -s PTTYPE -o value /dev/loop40)" = gpt ]'
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need "/dev/loop40p1 is 1 GiB" '[ "$(mib loop40p1)" -ge 1000 ] && [ "$(mib loop40p1)" -le 1030 ]'
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need "/dev/loop40p2 is 512 MiB" '[ "$(mib loop40p2)" -ge 500 ] && [ "$(mib loop40p2)" -le 520 ]'
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need "/dev/loop40p2 has the Linux swap type" '[ "$(ptype loop40p2)" = $SWAP_GUID ]'
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need "/dev/loop40p3 takes the rest of the disk" '[ "$(mib loop40p3)" -ge 2400 ]'
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task 2 "ext4 and XFS, each with a label"
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need "/dev/loop40p1 holds ext4" '[ "$(blkid -s TYPE -o value /dev/loop40p1)" = ext4 ]'
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need "the ext4 filesystem has a label" '[ -n "$(blkid -s LABEL -o value /dev/loop40p1)" ]'
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need "/dev/loop40p3 holds XFS" '[ "$(blkid -s TYPE -o value /dev/loop40p3)" = xfs ]'
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need "the XFS filesystem has a label" '[ -n "$(blkid -s LABEL -o value /dev/loop40p3)" ]'
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task 3 "Swap on /dev/loop40p2"
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need "/dev/loop40p2 is swap" '[ "$(blkid -s TYPE -o value /dev/loop40p2)" = swap ]'
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need "it's in use (swapon --show)" 'swapon --show=NAME --noheadings | grep -qx /dev/loop40p2'
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task 4 "A GPT table made with parted, then wiped" self
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task 5 "Btrfs: a subvolume, a snapshot, and a file found again in it"
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need "/dev/loop41 holds Btrfs" '[ "$(blkid -s TYPE -o value /dev/loop41)" = btrfs ]'
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need "a snapshot holds a file deleted from its subvolume" btrfs_ok
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