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Make sure that POOL_IMPORTED is set, unset and checked where appropriate. 

* If it's unset in find_rootfs(), no pool is imported so no point in
  looking for a rootfs.
* If find_rootfs() couldn't find a rootfs, the pool is exported. Remember
  to unset POOL_IMPORTED after doing so.
* Set POOL_IMPORTED if/when a pool have been imported in import_pool().
* Improve backup import (the one using cache file).

Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3636
This commit is contained in:
Turbo Fredriksson 2015-07-27 17:09:02 +02:00 committed by Brian Behlendorf
parent 48511ea645
commit 21d41d6806
1 changed files with 17 additions and 10 deletions
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17
contrib/initramfs/scripts/zfs
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@ -64,13 +64,13 @@ find_rootfs()
{
local pool="$1"
# If 'POOL_IMPORTED' isn't set, no pool imported and therefor
# we won't be able to find a root fs.
[ -z "${POOL_IMPORTED}" ] && return 1
# If it's already specified, just keep it mounted and exit
# User (kernel command line) must be correct.
if [ -n "${ZFS_BOOTFS}" ]
then
POOL_IMPORTED=1
return 0
fi
[ -n "${ZFS_BOOTFS}" ] && return 0
# Not set, try to find it in the 'bootfs' property of the pool.
# NOTE: zpool does not support 'get -H -ovalue bootfs'...
@ -87,6 +87,7 @@ find_rootfs()
# Not boot fs here, export it and later try again..
"${ZPOOL}" export "$pool"
POOL_IMPORTED=""
return 1
}
@ -229,12 +230,16 @@ import_pool()
then
[ "$quiet" != "y" ] && zfs_log_failure_msg "${ZFS_ERROR}"
if [ -f "${ZPOOL_CACHE}" ]
then
[ "$quiet" != "y" ] && zfs_log_begin_msg \
"Importing pool '${pool}' using cachefile."
ZFS_CMD="${ZPOOL} import -c ${ZPOOL_CACHE} -N ${ZPOOL_FORCE}"
ZFS_STDERR="$($ZFS_CMD "$pool" 2>&1)"
ZFS_ERROR="$?"
fi
if [ "${ZFS_ERROR}" != 0 ]
then
[ "$quiet" != "y" ] && zfs_log_failure_msg "${ZFS_ERROR}"
@ -252,6 +257,8 @@ import_pool()
fi
[ "$quiet" != "y" ] && zfs_log_end_msg
POOL_IMPORTED=1
return 0
}