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ZTS fix slog_replay_volume.ksh failure

The slog_replay_volume.ksh test case will fail when the pool is
layered on files in a filesystem which does not support discard.
Avoid this issue by creating the pool using DISKS which will
either be loopback device or real disk.

Reviewed-by: George Melikov <>
Reviewed-by: Giuseppe Di Natale <>
Signed-off-by: Brian Behlendorf <>
Closes #6654
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behlendorf authored and tonyhutter committed Sep 19, 2017
1 parent 661907e commit 4e6a9e45982bcf0bc33ce75ec936018bf6b36224
Showing with 2 additions and 2 deletions.
  1. +2 −2 tests/zfs-tests/tests/functional/slog/slog_replay_volume.ksh
@@ -81,7 +81,7 @@ log_onexit cleanup_volume
# 1. Create an empty volume (TESTVOL), set sync=always, and format
# it with an ext4 filesystem and mount it.
log_must zpool create $TESTPOOL $VDEV log mirror $LDEV
log_must zpool create $TESTPOOL ${DISKS%% *}
log_must zfs create -V 128M $TESTPOOL/$TESTVOL
log_must zfs set compression=on $TESTPOOL/$TESTVOL
log_must zfs set sync=always $TESTPOOL/$TESTVOL
@@ -148,7 +148,7 @@ log_must zpool export $TESTPOOL
# Import the pool to unfreeze it and claim log blocks. It has to be
# `zpool import -f` because we can't write a frozen pool's labels!
log_must zpool import -f -d $VDIR $TESTPOOL
log_must zpool import -f $TESTPOOL
log_must block_device_wait
log_must mount $VOLUME $MNTPNT

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