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List:       freebsd-fs
Subject:    Re: HAST + ZFS Problem
From:       Johan Hendriks <joh.hendriks () gmail ! com>
Date:       2012-12-19 10:59:31
Message-ID: 50D19E13.8020609 () gmail ! com
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Juergen Gotteswinter schreef:
> Hello,
>
> Currently I try to realize a Filer Setup, based up on FreeBSD 9 with 
> Carp, HAST and ZFS. Failover etc works fine so far, but when I start 
> writing data on the ZFS device the following error pops up continuously:
>
> Dec 17 14:59:06 filer1 hastd[2211]: [disk7] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2205]: [disk5] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2202]: [disk4] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2193]: [disk1] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2220]: [disk10] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2208]: [disk6] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2193]: [disk1] (primary) Local request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2199]: [disk3] (primary) Local request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2208]: [disk6] (primary) Local request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2220]: [disk10] (primary) Local request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2217]: [disk9] (primary) Local request 
> failed (Operation not supported by device): FLUSH.
> Dec 17 14:59:06 filer1 hastd[2196]: [disk2] (primary) Remote request 
> failed (Operation not supported by device): FLUSH.
>
>
> I already found threads where setting vfs.zfs.vdev.bio_flush_disable=1 
> seemed to fix this, for me it had no effect. Also i tried setting 
> metaflush off in hast.conf, which doesnt change anything, too
>
>
> Hardware Platform is a Dell Poweredge R515, with Perc H700 Controller 
> (configured to 10 Raid-0 Devices to get the single Disks).
>
> Any Ideas how to fix this?
>
> Cheers,
>
> Juergen
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I am no expert on this, but nobody answered, so i will try. :D

It seems to be a known issue is FreeBSD 9.0
i found the following on the net.

################## start

r225832 has been merged to 9-STABLE on 4 Jan 2012 as r229509 and you shouldn't
observe 'FLUSH: Operation not supported by device' constantly repeating. If
you do this is very strange and you should recheck your build. Please provide
the output of

   ident /sbin/hastd

command.

  JK> and hast.conf configuration from both machines:
  JK> I've decided to put metaflush option on every single level just to be
  JK> sure. No effect.

No need in disabling metaflush in your case. It will disable automatically
after the first attempt failed.

#################### end

FreeBSD 9.0 was also released in january!, but i can not tell if this 
patch has made it into release 9.0
I think it does not.
So if time permits, maybe try FreeBSD 9.1 which will proberbly be 
released any time now!

regards
and best wishes
Johan Hendriks
Neuteboom Automatisering

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