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Do not return /dev/loop-control in unused_loop_device 

The function unused_loop_device in /usr/libexec/zfs/common.sh
returns /dev/loop-control on the first call. This device is NOT
a loop device (https://github.com/torvalds/linux/commit/770fe30)
it is a control device. This in turn causes the script zconfig.sh
to fail with:

  zpool-create.sh: Error 1 creating /tmp/zpool-vdev0 ->
  /dev/loop-control loopback

The patch makes the function return /dev/loop[0-9]* which are
loop devices.

Signed-off-by: Andrew Reid <ColdCanuck@nailedtotheperch.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #797
This commit is contained in:
Andrew Reid 2012-10-13 12:03:59 -03:00 committed by Brian Behlendorf
parent 6f53a6a229
commit 6cb7ab069d
1 changed files with 1 additions and 1 deletions
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2
scripts/common.sh.in
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@ -263,7 +263,7 @@ check_loop_utils() {
# Find and return an unused loopback device.
#
unused_loop_device() {
for DEVICE in `ls -1 /dev/loop* 2>/dev/null`; do
for DEVICE in `ls -1 /dev/loop[0-9]* 2>/dev/null`; do
${LOSETUP} ${DEVICE} &>/dev/null
if [ $? -ne 0 ]; then
echo ${DEVICE}