Degraded ZFS... may have blundered

[codad]

First let me state that my FreeNAS server was assembled 2+ years ago and has been working great with no meddling on my part (also why I am still on the old version: FreeNAS 0.7.1 (Shere))

Regardless, my problem started a few days ago, and it basically indicated that the da2 drive had changed label to 15159316559305955361 (not sure why that happened, as it used to be dev/da2)

Then I spent quite some time reading various posts (and the FAQ here) and it seemed I had arrived at a solution on how to fix it, the last was to reformat the drive since it was still functional (so I did, using one of my Windows machines), and put the drive back in my server.

However, the steps definitely did not give me the expected result, and I am in quite a pickle as to what to do next. Please see the information readout from my pools/information listing

Code:

  pool: tank
 state: DEGRADED
 scrub resilver completed with 0 errors on Tue Aug 14 10:56:33 2012
config:	NAME                        STATE     READ WRITE CKSUM
	tank                        DEGRADED     0     0     0
	  raidz2                    DEGRADED     0     0     0
	    da0                     ONLINE       0     0     0
	    da1                     ONLINE       0     0     0
	    replacing               UNAVAIL      0     0     0  insufficient replicas
	      da2/old               UNAVAIL      0     0     0  cannot open
	      15159316559305955361  FAULTED      0     0     0  was /dev/da2
	    da3                     ONLINE       0     0     0
	    da4                     ONLINE       0     0     0
	    da5                     ONLINE       0     0     0
	    da6                     ONLINE       0     0     0
errors: No known data errors

I can still access my server (thank goodness), but what should my next steps be? Given that I am on the older version of FreeNAS and using raidz2, I was hoping to wait to upgrade the OS until 8.3 came out... bad idea?

If I need to reformat the 2TB drive again, is there a simpler way than using my Windows machine (it took all night!)?

Thank you for your patience and also being as specific as possible with instructions to help.

EDIT1:
Note that I reformatted the drive using NTFS
And, on the normal disk/management readout, the drive shows as online:

Code:

da0 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da1 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da2 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da3 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da4 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da5 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da6 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE 
da7 1907730MB WDC WD2001FASS-00U0B R001 n/a 60 ZFS storage pool device ONLINE

EDIT2
I just noticed on the GUI that I can go into a Disks / Format section, which does show two drives available for formatting: da2 and da7... should I give that a go, since da2 in the zpool is faulted/unavailable anyway?

 

[cyberjock]

You need to break up your issues into 2 separate problems and solve each independently of the other.

First, I'd worry about getting your zpool back to full reliability. Since you are using FreeNAS .7 you shouldn't be in this forum... See http://forums.freenas.org/showthread.php?740-If-using-FreeNAS-0-7-Read-This

After your zpool is back to full operability then deal with upgrading to 8.x.

You could also upgrade to 8.x first then worry about getting your zpool back. But if my data was important to me I'd stick with what has worked first before trying to upgrade.

 

[codad]

Thanks for the redirect - I have made a post on that forum as well... hopefully someone there can give the step-by-step to get the zpool stable. My gut tells me I should try to reformat the da2 drive using the GUI for da2 (and set the file system dropdown to ZFS Storage Pool Device)... Any experts out there that can give me the thumbs up or down on this move?

 

[cyberjock]

I have zero experience with .7. If I had your issue on 8.2 I'd "offline" whichever or whatever disks the UI recognizes for da2, then do a DD and wipe the first 100MB of the hard drive, then do a "REPLACE". While you may understand the theory of what i'm saying, I have no idea if my comments are possible in .7. Your questions are really best answered in the FreeNAS .7 forum.

I'm not sure why you'd ask experts in FreeNAS 8 to give opinions in .7. The experts here could give you horrible advice or even cause data loss. The only "experts" you should be taking advice from are ones that are still using it.

 

[ProtoSD]

If I had your issue on 8.2 I'd "offline" whichever or whatever disks the UI recognizes for da2, then do a DD and wipe the first 100MB of the hard drive

There no reason to use DD to wipe anymore, it's been fixed in the GUI. Also wiping the first 100MB won't be enough since GPT partitions are stored at the beginning and end.


@Codad - FreeNAS 7 has reached it's end of life, and even if it hadn't, like Noobsauce80 said, these are the wrong forums for version 7.