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EXT3 File System corrupt - I'm screwed and going to shoot myself?!
| Posted by mudanoman, 06-14-2007, 08:45 AM |
| Our server with raid 10 has had a failed hdd (which was replaced) and a
corrupt ext3 filesystem.
The server is now booted with Knoppix but drives will not mount. All we are trying to at this point is salvage as much data as we can.
Not sure what else can be done. Maybe a member can lend a hand or even offer some advice on how we might be able to retrieve data.
Regards
PS. Willing to pay top dollar for a way to get our files
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| Posted by tsj5j, 06-14-2007, 11:47 AM |
| Try to get a recovery service (eg. OnTrack) to recover it for you if its very important.
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| Posted by DeltaAnime, 06-14-2007, 11:56 AM |
| Have you tried doing an FSCK on the partition?
It's possible it just wants a good cleaning before it remounts
Thanks,
~Francisco
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| Posted by westcoasthost, 06-14-2007, 12:20 PM |
| I would not run fsck if you are looking for a professional solution.
The more writes you do to the disk the more of a chance you have of losing everything.
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| Posted by tsj5j, 06-14-2007, 12:23 PM |
| Agreed.
If the data is vital to you, any more reads/writes may just worsen the situation.
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| Posted by Russ Foster, 06-14-2007, 12:50 PM |
| IF you mount it read only can you see the filesystem structure? Any backups?
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| Posted by Mat Sumpter, 06-14-2007, 01:32 PM |
| I've had good experiences with Drive Savers in the past, they were able to recover 100% of the drives data. With RAID the chance of physical recovery does go down drastically though. Drive Savers does have a RAID recovery services: http://www.drivesavers.com/enterpris...ons/index.html
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| Posted by sirius, 06-14-2007, 01:52 PM |
| Moved to Technical and Security Issues....
Sirius
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| Posted by Techbrace, 06-14-2007, 02:09 PM |
| Which RAID controller do you use and what is the current RAID unit status? I just wonder how a RAID10 system would fail if only one HD was pulled out of the array. I would suggest don't do anything until you know what exactly the current situation is.
Last edited by Techbrace; 06-14-2007 at 02:13 PM.
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| Posted by gbjbaanb, 06-14-2007, 06:11 PM |
| RAID does not protect you from corrupted filesystems - only failed HDDs. Sometimes data can be written to both drives that ends up corrupted - though this shouldn't be an issue with a journalled filesystem, you never can be 100% sure.
The answer is obviously to restore from backups.
If you don't have any... first thing I'd do is image the drive using dd to another identical drive, then I can hack about as much as I like knowing if I make it worse, I can copy and start again.
Did you use hardware or software raid?
Otherwise your only answer is a professional data restoration service.
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| Posted by page-zone, 06-15-2007, 12:08 AM |
| Exactly why we opted out of anything but raid1. Having two Raid10 and one raid5 crash and burn incidents like you just had.
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| Posted by Techbrace, 06-15-2007, 03:12 AM |
| When the filesystem crashes on a RAIDed system, it's not similar to a file system crash on a non-RAIDed system. If the RAID unit is degraded that can cause the file system to be crashed and the first step should be knowing the RAID status and see if the RAID unit can be rebuilt.
There is no problem with RAID5 or RAID10, you just needs to be a bit careful and should always make sure that your RAID system is functioning properly. If you don't monitor it, things would go out of your hands like what happened with this member, mudanoman, for their bad luck.
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| Posted by eztiger, 06-15-2007, 03:56 AM |
| You could also look at debugfs.
It's not pleasant and takes a lot of leg work but I've recovered important files from failed / failing disks and broken filesystems before.
Pulling teeth was more fun.
But as others have said, if the data is that important and you don't have backups...don't mess around fork out the $ for the professionals.
Kev
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