[FreeNAS] Two-way mirror died, looking for help

korund

korund

Hi guys,

Seems like today my precious mirror was put into unreadable state. Here is what happend:

  1. I had a two-way mirror (named "stone"), FreeNAS 9.2 on flashdrive, 8Gb ECC RAM.
  2. Connected the third drive and tried to extend the mirror to a three-way via WebGui. Looks like I did it wrong because the third drive became connected as "Stripe".
  3. I did zpool exportp and (stupid idea) wiped the third drive using the "quick wipe" option in WebGui.
  4. Now I'm unable to import mirror and following error is returned:

    Code: 
    cannot import 'stone': one or more devices is currently unavailable

What we have:
  1. Two original disks
  2. Third disk untouched after "quick wipe"
  3. Before the wipe the mirror looked like this:

    Code: 
    pool: stone
state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
        still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: scrub repaired 0 in 1h13m with 0 errors on Sun Dec 15 01:13:57 2013

config:
        NAME                                            STATE    READ WRITE CKSUM
        stone                                          ONLINE      0    0    0
          mirror-0                                      ONLINE      0    0    0
            gptid/7259140f-44ab-11e3-9064-6805ca195278  ONLINE      0    0    0
            gptid/72c4474f-44ab-11e3-9064-6805ca195278  ONLINE      0    0    0
          gptid/fb22bbc2-7b89-11e3-8acc-74d02b982992    ONLINE      0    0    0
  4. Also, zpool.cache and zpool.cache.saved are both attached.
Sometimes we are learning from our own mistakes. Any chances to get this data back? I will highly appreciate any help or suggestions.
 

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Re: [FreeNAS] 2way mirror died, looking for help

The first place to ask is the FreeNAS forum. Those web functions are their additions, not part of FreeBSD.
 
Given that you have essentially lost/destroyed a VDEV, I don't think your pool is recoverable. I am not a ZFS expert, but as far as I understand this is the case.
 
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