x/drbd-devstack
Code Issues Proposed changes

Inhibit udev calling "blkid" and "btrfs" on the DRBD backend devices.

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Change-Id: Ic7d9b9a71cc5e1f52ac42fae14f0b9437835dc2c
This commit is contained in:
Philipp Marek
2015-06-19 08:52:43 +02:00
parent 15e2783769
commit b30f64534f
1 changed files with 22 additions and 0 deletions
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22
devstack/lib/drbd_devstack
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@@ -137,6 +137,28 @@ function configure_drbd_devstack {
sudo /sbin/lvcreate -L "${thinpool_size}"M -T "${DRBD_DATA_VG}/drbdthinpool"
fi
# Deactivate udev calling blkid etc. on the DRBD backend devices - that is
# neither needed nor wanted, because blkid having the device open can race
# with DRBD attaching.
# This will result in a message like
# kernel: [...] drbd CV_...: drbdX: open("/dev/...") failed with -16
# which means EBUSY
if ! grep 'ENV{DM_NAME}=="'"${DRBD_DATA_VG}"'-CV_' /lib/udev/rules.d/60-persistent-storage-dm.rules ; then
# Look for the DM_SUSPENDED line, and put another one behind it.
# ENV{DM_SUSPENDED}=="1", GOTO="persistent_storage_dm_end"
# The label might have a different name (eg. on newer Debian),
# so let's look for it while we're at it.
sudo sed -i 's:DM_SUSPENDED.*=="1",.*GOTO="\(.*\)":&\nENV{DM_NAME}=="'"${DRBD_DATA_VG}"'-CV_*", GOTO="\1"\n:' /lib/udev/rules.d/60-persistent-storage-dm.rules
fi
if ! grep 'ENV{DM_NAME}=="'"${DRBD_DATA_VG}"'-CV_' /lib/udev/rules.d/80-btrfs-lvm.rules ; then
# The btrfs scan isn't wanted, too.
# SUBSYSTEM!="block", GOTO="btrfs_lvm_end"
sudo sed -i 's:SUBSYSTEM.="block",.*GOTO="\(.*\)":&\nENV{DM_NAME}=="'"${DRBD_DATA_VG}"'-CV_*", GOTO="\1"\n:' /lib/udev/rules.d/80-btrfs-lvm.rules
fi
# initialize drbdmanage
sudo drbdmanage init --quiet
sudo drbdmanage shutdown --quiet