I loss my volume

freenas3423

Cadet
Joined
Dec 30, 2019
Messages
8
Hi dear
i received critical message "currently unreadable (pending) sectors" in freenas 11.1-u6 web consol.
try to do this command :
smartctl -t short /dev/ada2
smartctl -a /dev/ada2
then i see 9 sector number that have unreadable.
after that try to do :
sysctl kern.geom.debugflags=16
dd if=/dev/zero of=/dev/ada2 bs=512 count=1 seek=1361770023 conv=noerror,sync

but my problem do not solved.
after that run seagattools under dos to solve bad sectors problem. it solved it but now cannot see my volume.

what should i do?
please help me?
thanks
 

Apollo

Wizard
Joined
Jun 13, 2013
Messages
1,458
Seagate under DOS to fix a ZFS related issue sounds like " The surgery was a success but the patient didn't make it."
You might have destroyed your ZFS system and most likely lost access to your pool as a result.
Running a scrub would have been the better approach and then later figure out weather those sectors were causing corruption on your data.
For the sound of it, you didn't have redundancy.
 

blueether

Patron
Joined
Aug 6, 2018
Messages
259
What was your pool layout?
Paste the output from zpool status
 

blueether

Patron
Joined
Aug 6, 2018
Messages
259
Was this a single drive pool? if not what was the pool layout?
 

blueether

Patron
Joined
Aug 6, 2018
Messages
259
you could try testdisk (https://www.cgsecurity.org/) to recover the partition but I'd really be looking at recovery from backups at this stage
 

blueether

Patron
Joined
Aug 6, 2018
Messages
259
I have know idea if the above will work, or if the seagattools compleatly flattened the disk (I know some HD tools to fix badblocks will distory ALL data on the disk)
 

freenas3423

Cadet
Joined
Dec 30, 2019
Messages
8
now i try ufs explorer for recover my data.
more than 2 hour later i underestand is it usefull or not.
 

danb35

Hall of Famer
Joined
Aug 16, 2011
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15,504
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