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udev-rules: prevent systemd from mount devices before they are ready. 

In the "add" uevent, ATTR{md/array_state} does not exist, so the next
rule does not kick in.

When an array is assembled incrementally, systemd might see it
before it is ready, try to mount it, fail, and give up.
Result is that array doesn't get mounted.

If we ask udev to tell systemd that it isn't ready yet in this
case, systemd waits until it is ready, and all are happy.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Harald Hoyer 2012-08-13 08:00:21 +10:00 committed by NeilBrown
parent aa437afc1c
commit 5b7e273aae
1 changed files with 1 additions and 1 deletions
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2
udev-md-raid.rules
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@ -27,7 +27,7 @@ ENV{DEVTYPE}=="partition", GOTO="md_ignore_state"
# container devices have a metadata version of e.g. 'external:ddf' and
# never leave state 'inactive'
ATTR{md/metadata_version}=="external:[A-Za-z]*", ATTR{md/array_state}=="inactive", GOTO="md_ignore_state"
TEST!="md/array_state", GOTO="md_end"
TEST!="md/array_state", ENV{SYSTEMD_READY}="0", GOTO="md_end"
ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0", GOTO="md_end"
LABEL="md_ignore_state"