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Check that 'mdadm --assemble' is effective before continuing.

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svn path=/nixos/trunk/; revision=19339
This commit is contained in:
Nicolas Pierron 2010-01-10 19:36:53 +00:00
parent f22a548c0d
commit b02cf8d20e
1 changed files with 17 additions and 3 deletions
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20
modules/tasks/swraid.nix
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@ -5,6 +5,7 @@
let
tempConf = "/var/run/mdadm.conf";
tempStatus = "/var/run/mdadm.status";
logFile = "/var/log/mdadmEvents.log";
modprobe = config.system.sbin.modprobe;
inherit (pkgs) mdadm diffutils;
@ -42,9 +43,21 @@ in
# Scan /proc/partitions for RAID devices.
${mdadm}/sbin/mdadm --examine --brief --scan -c partitions > ${tempConf}
if ! ${diffutils}/bin/diff ${tempConf} ${tempConf}.old > /dev/null; then
# Activate each device found.
${mdadm}/sbin/mdadm --assemble -c ${tempConf} --scan
if ! -q ${diffutils}/bin/diff ${tempConf} ${tempConf}.old > /dev/null; then
try=0
while ! test -e /proc/mdstat || ! ${diffutils}/bin/diff -q /proc/mdstat ${tempStatus} > /dev/null; do
test $try -gt 6 && break
test $try -neq 0 && sleep 10
# Activate each device found.
${mdadm}/sbin/mdadm --assemble -c ${tempConf} --scan
try=$(($try + 1))
done
# Register the new status
cp /proc/mdstat ${tempStatus}
# Send notifications.
initctl emit -n new-devices
@ -64,6 +77,7 @@ in
postStart = ''
echo > ${tempConf}
echo > ${tempStatus}
# Assemble early raid devices.
initctl emit -n new-raid-array