Upgrading to hacked N36L BIOS seems to have done the trick:
eugen@nexenta:~$ zpool status tank
pool: tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
c0t0d0 ONLINE 0 0 0
c0t1d0 ONLINE 0 0 0
c0t2d0 ONLINE 0 0 0
c0t3d0 ONLINE 0 0 0
logs
c0t5d0s0 ONLINE 0 0 0
cache
c0t5d0s1 ONLINE 0 0 0
errors: No known data errors
Anecdotally, the drive noise and system load have gone
down as well. It seems even with small SSDs hybrid pools
are definitely worthwhile.
On Fri, Aug 05, 2011 at 10:43:02AM +0200, Eugen Leitl wrote:
>
> I think I've found the source of my problem: I need to reflash
> the N36L BIOS to a hacked russian version (sic) which allows
> AHCI in the 5th drive bay
>
> http://terabyt.es/2011/07/02/nas-build-guide-hp-n36l-microserver-with-nexenta-napp-it/
>
> ...
>
> Update BIOS and install hacked Russian BIOS
>
> The HP BIOS for N36L does not support anything but legacy IDE emulation on
> the internal ODD SATA port and the external eSATA port. This is a problem for
> Nexenta which can detect false disk errors when using the ODD drive on
> emulated IDE mode. Luckily an unknown Russian hacker somewhere has modified
> the BIOS to allow AHCI mode on both the internal and eSATA ports. I have
> always said, “Give the Russians two weeks and they will crack anything” and
> usually that has held true. Huge thank you to whomever has modified this BIOS
> given HPs complete failure to do so.
>
> I have enabled this with good results. The main one being no emails from
> Nexenta informing you that the syspool has moved to a degraded state when it
> actually hasn’t :)
>
> ...
>
> On Fri, Aug 05, 2011 at 09:05:07AM +0200, Eugen Leitl wrote:
> > On Thu, Aug 04, 2011 at 11:58:47PM +0200, Eugen Leitl wrote:
> > > On Thu, Aug 04, 2011 at 02:43:30PM -0700, Larry Liu wrote:
> > > >
> > > >> root@nexenta:/export/home/eugen# zpool add tank log /dev/dsk/c3d1p0
> > > >
> > > > You should use c3d1s0 here.
> > > >
> > > >> Th
> > > >> root@nexenta:/export/home/eugen# zpool add tank cache /dev/dsk/c3d1p1
> > > >
> > > > Use c3d1s1.
> > >
> > > Thanks, that did the trick!
> > >
> > > root@nexenta:/export/home/eugen# zpool status tank
> > > pool: tank
> > > state: ONLINE
> > > scan: scrub repaired 0 in 0h0m with 0 errors on Fri Aug 5 03:04:57 2011
> > > config:
> > >
> > > NAME STATE READ WRITE CKSUM
> > > tank ONLINE 0 0 0
> > > raidz2-0 ONLINE 0 0 0
> > > c0t0d0 ONLINE 0 0 0
> > > c0t1d0 ONLINE 0 0 0
> > > c0t2d0 ONLINE 0 0 0
> > > c0t3d0 ONLINE 0 0 0
> > > logs
> > > c3d1s0 ONLINE 0 0 0
> > > cache
> > > c3d1s1 ONLINE 0 0 0
> > >
> > > errors: No known data errors
> >
> > Hmm, it doesn't seem to last more than a couple hours
> > under test load (mapped as a CIFS share receiving a
> > bittorrent download with 10 k small files in it at
> > about 10 MByte/s) before falling from the pool:
> >
> > root@nexenta:/export/home/eugen# zpool status tank
> > pool: tank
> > state: DEGRADED
> > status: One or more devices are faulted in response to persistent errors.
> > Sufficient replicas exist for the pool to continue functioning in a
> > degraded state.
> > action: Replace the faulted device, or use 'zpool clear' to mark the device
> > repaired.
> > scan: none requested
> > config:
> >
> > NAME STATE READ WRITE CKSUM
> > tank DEGRADED 0 0 0
> > raidz2-0 ONLINE 0 0 0
> > c0t0d0 ONLINE 0 0 0
> > c0t1d0 ONLINE 0 0 0
> > c0t2d0 ONLINE 0 0 0
> > c0t3d0 ONLINE 0 0 0
> > logs
> > c3d1s0 FAULTED 0 4 0 too many errors
> > cache
> > c3d1s1 FAULTED 13 7.68K 0 too many errors
> >
> > errors: No known data errors
> >
> > dmesg sez
> >
> > Aug 5 05:53:26 nexenta EVENT-TIME: Fri Aug 5 05:53:26 CEST 2011
> > Aug 5 05:53:26 nexenta PLATFORM: ProLiant-MicroServer, CSN: CN7051P024,
> > HOSTNAME: nexenta
> > Aug 5 05:53:26 nexenta SOURCE: zfs-diagnosis, REV: 1.0
> > Aug 5 05:53:26 nexenta EVENT-ID: 516e9c7c-9e29-c504-a422-db37838fa676
> > Aug 5 05:53:26 nexenta DESC: A ZFS device failed. Refer to
> > http://sun.com/msg/ZFS-8000-D3 for more information.
> > Aug 5 05:53:26 nexenta AUTO-RESPONSE: No automated response will occur.
> > Aug 5 05:53:26 nexenta IMPACT: Fault tolerance of the pool may be
> > compromised.
> > Aug 5 05:53:26 nexenta REC-ACTION: Run 'zpool status -x' and replace the
> > bad device.
> > Aug 5 05:53:39 nexenta fmd: [ID 377184 daemon.error] SUNW-MSG-ID:
> > ZFS-8000-FD, TYPE: Fault, VER: 1, SEVERITY: Major
> > Aug 5 05:53:39 nexenta EVENT-TIME: Fri Aug 5 05:53:39 CEST 2011
> > Aug 5 05:53:39 nexenta PLATFORM: ProLiant-MicroServer, CSN: CN7051P024,
> > HOSTNAME: nexenta
> > Aug 5 05:53:39 nexenta SOURCE: zfs-diagnosis, REV: 1.0
> > Aug 5 05:53:39 nexenta EVENT-ID: 3319749a-b6f7-c305-ec86-d94897dde85b
> > Aug 5 05:53:39 nexenta DESC: The number of I/O errors associated with a
> > ZFS device exceeded
> > Aug 5 05:53:39 nexenta acceptable levels. Refer to
> > http://sun.com/msg/ZFS-8000-FD for more information.
> > Aug 5 05:53:39 nexenta AUTO-RESPONSE: The device has been offlined and
> > marked as faulted. An attempt
> > Aug 5 05:53:39 nexenta will be made to activate a hot spare
> > if available.
> > Aug 5 05:53:39 nexenta IMPACT: Fault tolerance of the pool may be
> > compromised.
> > Aug 5 05:53:39 nexenta REC-ACTION: Run 'zpool status -x' and replace the
> > bad device.
> >
> > --
> > Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
> > ______________________________________________________________
> > ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
> > 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
> > _______________________________________________
> > zfs-discuss mailing list
> > zfs-discuss@opensolaris.org
> > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
> --
> Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
> ______________________________________________________________
> ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
> 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss@opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
--
Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
______________________________________________________________
ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
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