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Allow to use pool GUID as root pool in initram script #8052

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merged 1 commit into from
Oct 24, 2018
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Allow to use pool GUID as root pool in initram script #8052

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11 changes: 10 additions & 1 deletion contrib/initramfs/scripts/zfs.in
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Original file line number Diff line number Diff line change
Expand Up @@ -193,7 +193,7 @@ import_pool()

# Verify that the pool isn't already imported
# Make as sure as we can to not require '-f' to import.
"${ZPOOL}" status "$pool" > /dev/null 2>&1 && return 0
"${ZPOOL}" get name,guid -o value -H 2>/dev/null | grep -Fxq "$pool" && return 0

# For backwards compatibility, make sure that ZPOOL_IMPORT_PATH is set
# to something we can use later with the real import(s). We want to
Expand Down Expand Up @@ -772,6 +772,7 @@ mountroot()
# root=zfs:<pool>/<dataset> (uses this for rpool - first part, without 'zfs:')
#
# Option <dataset> could also be <snapshot>
# Option <pool> could also be <guid>

# ------------
# Support force option
Expand Down Expand Up @@ -889,6 +890,14 @@ mountroot()
/bin/sh
fi

# In case the pool was specified as guid, resolve guid to name
pool="$("${ZPOOL}" get name,guid -o name,value -H | \
awk -v pool="${ZFS_RPOOL}" '$2 == pool { print $1 }')"
if [ -n "$pool" ]; then
ZFS_BOOTFS="${pool}/${ZFS_BOOTFS#*/}"
ZFS_RPOOL="${pool}"
fi

# Set elevator=noop on the root pool's vdevs' disks. ZFS already
# does this for wholedisk vdevs (for all pools), so this is only
# important for partitions.
Expand Down