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Date:      Tue, 1 May 2012 20:57:52 -0400
From:      Rich <rercola@acm.jhu.edu>
To:        Simon <simon@optinet.com>
Cc:        "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   Re: Replacing dead drives in ZRAID2
Message-ID:  <CAOeNLur2q_acSf6dXcNX9a0qRgvka8dxmafRYgs1qFF-a1APMQ@mail.gmail.com>
In-Reply-To: <20120501221536.4F8E4106564A@hub.freebsd.org>
References:  <CAOjFWZ7yuag3J8hZCfPP8XpLdo94whEcHDVN3od5aWV_4CXebQ@mail.gmail.com> <20120501221536.4F8E4106564A@hub.freebsd.org>

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What card is this?

- Rich

On Tue, May 1, 2012 at 6:15 PM, Simon <simon@optinet.com> wrote:
>
> Sorry, I meant to say zpool offline.
>
> After I take the drive out marked as offline, and put it back in, the sys=
tem spits
> the following:
>
> ahd0: someone reset channel A
> ahd0: WARNING no command for scb 242 (cmdcmplt)
> QOUTPOS =3D 283
>
>>>>>>>>>>>>>>>>>>>>Dumpt Card State Begins>>>>>>>>>>>>
> ahd0: dumping card state.... followed by a lard amount of data.
>
> It then freezes and won't executed any new commands.
>
> beta_srv# uname -a
> FreeBSD beta_srv 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan =A03 07:15:2=
5
> UTC 2012 =A0 =A0 root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC=
 =A0i386
>
> beta_srv# dmesg | grep ses
> ses0 at ahd0 bus 0 scbus0 target 6 lun 0
> ses0: <SUPER GEM318 0> Fixed Processor SCSI-2 device
> ses0: 3.300MB/s transfers
> ses0: SAF-TE Compliant Device
>
> Thanks,
> Simon
>
> On Tue, 1 May 2012 14:26:35 -0700, Freddie Cash wrote:
>
>>On Tue, May 1, 2012 at 1:57 PM, Simon <simon@optinet.com> wrote:
>>> I decided to give ZFS ZRAID2 a shot after getting fed up with some lega=
cy
>>> hardware RAID cards that don't properly perform, or at all, patrol-read=
s +
>>> consistency checking. So...
>>>
>>> I can't seem to figure out the proper way to replace a dead drive in a =
running
>>> system with SCSI+SES enclosure. I tried:
>>>
>>> zpool detach zroot baddrive
>>> camcontrol stop baddrive
>
>>You can't detach drives from raidz vdevs. =A0The correct process is:
>
>>zpool offline zroot <baddrive>
>><pull drive from system>
>><insert new drive>
>><do any partitioning, labelling, etc to suit your env>
>>zpool replace zroot <baddrive> <newdrive>
>
>>"zpool detach" is only used for mirror vdevs.
>
>>--
>>Freddie Cash
>>fjwcash@gmail.com
>
>
>
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