[DRBD-user] drbd-0.7 completely freezes on adaptec (Dell PercRaid 3/Di)

Ingvar Hagelund ingvar at linpro.no
Mon Oct 24 15:39:44 CEST 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hello, list

We have a couple of Dell 2650 machines which we have had quite a lot
problems with. They are impossible to get stable under load with 2.6
at all (a whole other story), and with 2.4, drbd-0.7 just freezes the
boxes completely.

Running Debian Sarge, this is reproducable both with the
module-source-package that comes with Sarge (0.7.10) and with a custom
build 0.7.14 from the drbd.org tarball.

To reproduce:
1. Take a couple of 2cpu Dell 2650 machines, load them with Debian
   Sarge, kernel-image-2.4.27-2-686-smp, drbd0.7-utils and
   drbd0.7-module-source
2. Build and install drbd kernel modules with module-assisstant
3. Make a drbd volume on one large mirror, for example a mirror of
   136GB volumes
4. Do a 'mkfs -t ext3 /dev/drbd0' and watch how mke2fs starts up and
   the system freezes completely. No error messages at all, even on the
   console.
5. Reboot, remove the debian packages and build drbd-0.7.14 from
   drbd.org tarball. Repeat step 4 with exactly same results.

drbd-0.6 seems to work flawlessly. 

Regards,
Ingvar Hagelund

-- 
Many that live deserve death. And some that die deserve life. Can you
give it to them? Then do not be too eager to deal out death in
judgement. For even the very wise cannot see all ends.
								Gandalf



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