[OpenAFS] Cache partition choice still limited to ext2 on Linux?

[Timothy Balcer]

ext4 is extremely fast with journalling turned off.. even faster than
ext2. For an AFS cache, that would seem to be the ticket.

You can disable it on the filesystem itself with tune2fs,

# Delete has_journal option
tune2fs -O ^has_journal /dev/sda10

# Required fsck
e2fsck -f /dev/sda10

You can also use some mount options to help speed:

noatime,data=writeback,barrier=0,nobh,errors=remount-ro

Each of these has consequences, so it would be really advised to not
use any of it unless you are mounting the AFS cache on its own
partition or on a loopback device, because you definitely don't want a
partition configured like this if it has anything valuable in it. :-)

On Wed, Nov 7, 2012 at 2:09 AM, Dirk Heinrichs <dirk.heinrichs@altum.de> wrote:
>
> Hello,
>
> if I remember right, somebody wrote a few weeks ago, that with 1.6.x
> the choices for the cache partition on Linux systems aren't limited to
> ext2 only anymore. Is this correct?
>
> If yes, which filesystems are possible to use (which ones are not)? Does
> the cache even need its own partition nowadays?
>
> Thanks...
>
>         Dirk
> --
> Dirk Heinrichs <dirk.heinrichs@altum.de>
> Tel: +49 (0)2471 209385 | Mobil: +49 (0)176 34473913
> GPG Public Key C2E467BB | Jabber: dirk.heinrichs@altum.de




--
Timothy Balcer / IT Services
Telmate / San Francisco, CA
Direct / (415) 300-4313
Customer Service / (800) 205-5510