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Suspect Disk scrubbing followed by fsck TRASHES filesystem. Now what?
I'm starting to suspect that the issue described in the community post titled "Disk scrubbing followed by fsck TRASHES filesystem?" just happened to me. https://community.netgear.com/t5/ReadyNAS-...
- I have destriped the raid to an image using two separate softwares and run five recovery software on the images. Two attempts have resulted in an almost complete file system, but every file llarger than a a few KB has random bits of other files inserted, periodically. In video, this looked like static or missing audio segments. In pictures it looks like partial pictures.
There was no rescuing it: basically the netgear box thrashed my file system during a routine raid scrub+fsck.
The rebuild and restore from backup went smoothly, albeit my array has been down for over two weeks.
Based on the thread linked above, this seems like it may have been a known defect a few versions back and either was not fixed or was reintroduced.
I guess my only option for some sort of closure on this, to do something proactive to minimize the chance of this happening again, is to go with another vendor and hope they make fewer defects in their products.
Thanks for your efforts trying to make this right.
Please send me your logs (see the Sending Logs link in my sig).
Well you could contact support and enquire about purchasing a data recovery contract. Note that data recovery attempts may be unsuccessful.
It appears that one of your disks may be failing.Thank you for looking at the logs.
"It appears that one of your disks may be failing."
Could you be more specific? which disk, according to which log entry?
All the disks seem to test ok with wd diagnostic tools on an external pc, so it would be good to know how you learned that one could be failing.
I did just replace one disk and the array was rebuilt. Are you talking about disk 6? or another disk?
Also, would a failing disk potentially cause this data corruption? Would pulling the failing disk be expected to fix it? From my limited knowledge of RAID, that would not make sense. Would it potentially fix the problem?
If you look in disk_smart.log one of your disks has some current pending sectors.
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