Replacing dead drives in ZRAID2
Simon
simon at optinet.com
Tue May 1 22:15:36 UTC 2012
Sorry, I meant to say zpool offline.
After I take the drive out marked as offline, and put it back in, the system spits
the following:
ahd0: someone reset channel A
ahd0: WARNING no command for scb 242 (cmdcmplt)
QOUTPOS = 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 3 07:15:25
UTC 2012 root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
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 at optinet.com> wrote:
>> I decided to give ZFS ZRAID2 a shot after getting fed up with some legacy
>> hardware RAID cards that don't properly perform, or at all, patrol-reads +
>> 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. The 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 at gmail.com
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