ZFS RAIDZ recovery

Discussions on using the professional data recovery program R-STUDIO for RAID re-construction, NAS recovery, and recovery of various disk and volume managers: Windows storage spaces, Apple volumes, and Linux Logical Volume Manager.

ZFS RAIDZ recovery

Post by kirm » Thu Mar 24, 2011 4:02 pm

Hi all,

I was wondering if anybody had any experience with recovering data from a ZFS RAIDZ array?

It's my own fault. I deleted a folder with about 280 gigs of pics and video. I was not using snapshots as I am backed up on a Linux MD RAID 1 array. The problem was I rebuilt the Linux array and encrypted it. I wiped it before using it. (Yes I tried recovering from in and...forget it) I was in the process of copying data back to it when I pressed delete on the wrong side of the file manager and that was that. Yes, stupid, I know. You can't beat me anymore than I've beat myself.

I'm not blaming ZFS in anyway. I think it's a great file system.

I tried recovering data using R-Studio but had little luck. Anything bigger than 512KB was unreadable. I got some pics back but that's it.

My next step is to try the suggestions from this page:

http://www.r-tt.com/Articles/Finding_RA ... ndex.shtml

But since I was using ZFS with RAIDZ I'm wondering if it's even worth the trouble emulating a RAID 5 setup.

I'm sure that as ZFS and, especially, RAIDZ becomes more popular R-Studio will evolve to recover it but that's somewhere in the future.

This guy does prove it's possible:

http://mbruning.blogspot.com/2009/12/zf ... -walk.html

But it would take forever following his method.

In the here and now does anybody have any suggestions...besides Ha Ha ju be like N00B?

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Re: ZFS RAIDZ recovery

Post by Alt » Fri Mar 25, 2011 12:10 pm

Sorry, I never heard anything about this file system and RAIDs before your post.

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