diff options
| -rw-r--r-- | contrib/initramfs/scripts/zfs.in | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/contrib/initramfs/scripts/zfs.in b/contrib/initramfs/scripts/zfs.in index ad604a82c..9d11e1926 100644 --- a/contrib/initramfs/scripts/zfs.in +++ b/contrib/initramfs/scripts/zfs.in @@ -884,20 +884,27 @@ mountroot() ZFS_RPOOL="${pool}" fi - # Set elevator=noop on the root pool's vdevs' disks. ZFS already - # does this for wholedisk vdevs (for all pools), so this is only - # important for partitions. + # Set the no-op scheduler on the disks containing the vdevs of + # the root pool. For single-queue devices, this scheduler is + # "noop", for multi-queue devices, it is "none". + # ZFS already does this for wholedisk vdevs (for all pools), so this + # is only important for partitions. "${ZPOOL}" status -L "${ZFS_RPOOL}" 2> /dev/null | awk '/^\t / && !/(mirror|raidz)/ { dev=$1; sub(/[0-9]+$/, "", dev); print dev }' | - while read i + while read -r i do - if grep -sq noop /sys/block/$i/queue/scheduler + SCHEDULER=/sys/block/$i/queue/scheduler + if [ -e "${SCHEDULER}" ] then - echo noop > "/sys/block/$i/queue/scheduler" + # Query to see what schedulers are available + case "$(cat "${SCHEDULER}")" in + *noop*) echo noop > "${SCHEDULER}" ;; + *none*) echo none > "${SCHEDULER}" ;; + esac fi done |