Package: partman-auto-raid
Version: 14
I'm preseed installing using two spares. The auto-raidcfg script is
not properly counting spares resulting in mdadm error (fatal).
tty0: (in red)
An unexpected error occurred while setting up a preseeded RAID
configuration.
Check /var/log/syslog or see virtual console 4 for the details.
syslog:
partman-auto-raid: Selected spare count: 1
partman-auto-raid: Spare devices count: 2
partman-auto-raid: mdadm: You have listed more devices (5) than are in
the array(4)!
partman-auto-raid: Error creating array /dev/md0
my preseed.cfg partman-auto-raid rule looks as follows:
d-i partman-auto-raid/recipe string \
1 2 2 ext3 / \
/dev/sda1#/dev/sdb1 \
/dev/sdc1#/dev/sdd1 \
.
Basically spares are counted (with wc) before they are split on '#'.
Below is a patch (tested) to fix this behavior:
--- auto-raidcfg 2008-08-09 14:26:07.000000000 -0500
+++ auto-raidcfg.FIXED 2009-07-20 15:08:29.474764832 -0500
@@ -24,12 +24,14 @@
DEVICES="$6"
SPARE_DEVICES="$7"
- NAMED_SPARES=$(echo $SPARE_DEVICES | wc -w)
-
RAID_DEVICES=$(echo $DEVICES | sed -e "s/#/ /g")
SPARE_DEVICES=$(echo $SPARE_DEVICES | sed -e "s/#/ /g")
+ # fixed - needs to run after splitting SPARE_DEVICES
+ NAMED_SPARES=$(echo $SPARE_DEVICES | wc -w)
+
+
if [ "$RAID_TYPE" != "0" ]; then
# Count them
SELECTED=$(echo $RAID_DEVICES | wc -w)
To work around this problem without rebuilding installer packages,
I'm running following script from inittab to replace auto-raidcfg
(I placed it into initrd along with preseed.cfg and /bin/auto-raidcfg.fixed):
/bin/fix-auto-raidcfg:
#!/bin/sh
/bin/echo -n "waiting for /bin/auto-raidcfg to appear: ";
while [ ! -e /bin/auto-raidcfg ]; do
/bin/sleep 1;
/bin/echo -n ".";
done;
/bin/echo "";
/bin/mv /bin/auto-raidcfg.fixed /bin/auto-raidcfg
/bin/echo "*** replaced /bin/auto-raidcfg with a fixed version"
/bin/echo -n "sleeping: "
while true; do
/bin/echo -n '.';
sleep 1;
done;
my initrd's /etc/inittab looks as follows:
# /etc/inittab
# busybox init configuration for debian-installer
# main rc script
::sysinit:/sbin/reopen-console /sbin/debian-installer-startup
# main setup program
::respawn:/sbin/reopen-console /sbin/debian-installer
# convenience shells
tty2::askfirst:-/bin/sh
tty3::askfirst:-/bin/sh
# logging
tty4::respawn:/usr/bin/tail -f /var/log/syslog
# fix auto-raidcfg script
tty5::respawn:/bin/fix-auto-raidcfg
# Stuff to do before rebooting
::ctrlaltdel:/sbin/shutdown > /dev/null 2>&1
# re-exec init on receipt of SIGHUP/SIGUSR1
::restart:/sbin/init
Please let me know if you accept my patch.
Thanks, Michal
ps. Since I'm already modifying auto-raidcfg, I'm using a non-default
chunk size (not shown in above code). Ability to specify chunk
size in partman-auto-raid/recipe would be nice... optimal chunk size
increased sequential IO on my systems by 30%.
--
Michal Sabala | "There are 10 types of
Research Programmer / System Administrator | people in the world. Those
LAC/NCDM: University of Illinois at Chicago | who understand binary and
tel. (312)-996-9546 | those who don't."
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