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Allow use of pool GUID as root pool 

It's helpful if there are pools with same names,
but you need to use only one of them.

Main case is twin servers, meanwhile some software
requires the same name of pools (e.g. Proxmox).

Reviewed-by: Kash Pande <kash@tripleback.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Igor ‘guardian’ Lidin of Moscow, Russia
Closes #8052
This commit is contained in:
George Melikov 2018-10-24 06:06:40 +03:00 committed by Brian Behlendorf
parent 3449243b6d
commit e871a8f058
1 changed files with 10 additions and 1 deletions
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11
contrib/initramfs/scripts/zfs.in
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@ -193,7 +193,7 @@ import_pool()
# Verify that the pool isn't already imported # Verify that the pool isn't already imported
# Make as sure as we can to not require '-f' to import. # 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 # 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 # to something we can use later with the real import(s). We want to
@ -772,6 +772,7 @@ mountroot()
# root=zfs:<pool>/<dataset> (uses this for rpool - first part, without 'zfs:') # root=zfs:<pool>/<dataset> (uses this for rpool - first part, without 'zfs:')
# #
# Option <dataset> could also be <snapshot> # Option <dataset> could also be <snapshot>
# Option <pool> could also be <guid>
# ------------ # ------------
# Support force option # Support force option
@ -889,6 +890,14 @@ mountroot()
/bin/sh /bin/sh
fi 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 # Set elevator=noop on the root pool's vdevs' disks. ZFS already
# does this for wholedisk vdevs (for all pools), so this is only # does this for wholedisk vdevs (for all pools), so this is only
# important for partitions. # important for partitions.