[Dovecot] XFS vs EXT4 for mail storage

[Alessio Cecchi]

Il 03/05/2013 10:48, Stan Hoeppner ha scritto:
> On 5/2/2013 7:04 AM, Alessio Cecchi wrote:
>
>> "rw,noatime,attr2,delaylog,nobarrier,inode64,noquota"
> ...
>> and I'm running it on RHEL 6.4
>
> I assume this is from /proc/mounts?  All of those but for noatime,
> nobarrier, and inode64 are defaults.  You've apparently specified these
> in /etc/fstab.  noatime is useless as relatime is the default.  Google
> "XFS relatime vs noatime".
>
> I assume you have a RAID controller or SAN head with [F|B]BWC and have
> disabled individual drive write caches of array disks, given you've
> disabled journal write barriers.  If drive caches are in fact enabled,
> and/or you don't have [F|B]BWC, then journal write barriers need to be
> enabled.  If not you're skydiving without a reserve chute.
>

Thanks Stan, yes the output is from /proc/mounts.

We are running XFS on RAID controller but we havent disabled individual 
drive write caches. So what options suggest in fstab for XFS with non 
high-end RAID/SAN ?

Thanks
-- 
Alessio Cecchi is:
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