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[btrfs] BTRFS_COMPRESSION accept compression ratio

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BTRFS_COMPRESSION=zlib
BTRFS_COMPRESSION=zstd:5
BTRFS_COMPRESSION=zstd:12 are acceptable
This commit is contained in:
may 2019-05-10 03:58:37 +08:00
parent f9fc3fa4d9
commit e251038218
1 changed files with 3 additions and 1 deletions
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4
lib/configuration.sh
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@ -34,11 +34,13 @@ if [[ -z $BTRFS_COMPRESSION ]];then
BTRFS_COMPRESSION=lzo
else
local btrfs_compression_ok=0
local btrfs_cmp_chks="$(echo $BTRFS_COMPRESSION | sed -e 's/:[0-9]\+//')"
for c in 'lzo zlib zstd';do
[[ $c == $BTRFS_COMPRESSION ]] && btrfs_compression_ok=1
[[ $c == $btrfs_cmp_chks ]] && btrfs_compression_ok=1 # ${BTRFS_COMPRESSION/:[0-9]+/} not works like zstd:12
done
[[ $btrfs_compression_ok -eq 0 ]] && exit_with_error "wrong btrfs compression method" "$BTRFS_COMPRESSION"
unset btrfs_compression_ok
unset btrfs_cmp_chks
fi
# Fixed image size is in 1M dd blocks (MiB)