[mvastola12]

Hey guys,
For several years my organization has had a Snap Server 4100 (Purchased as a Dell PowerVault 705N). Long story short, recently, a major problem developed whereby our RAID 5 array (4x 40gig Drives) refuses to mount its filesystem. On startup, it seems to try to mount, but it runs an fsck and finds that a cylinder group has a bad magic number. Unfortunately, several runs of fsck in "Repair all errors" mode fails to yeild any results (FSCK exits fatally once it reaches that sector and finds the bad magic number error).

I was wondering if anyone had any ideas about how to go about getting our data back online. The RAID array assembles, and our data is there if I do a sector-by-sector dump of /dev/rraid0 - the filesystem just won't mount, making the data inaccessible.

We played for a while, to no avail, trying to find some way to either manually correct the data for that sector on the disk through Snap's debug command line, or somehow get an image of the the assembled array off of the SnapServer (so we could put it on a hard drive, correct the sector, and then hook that drive up to the SnapServer).

Does anyone have any idea how we could try to rescue our data? Is there a tool available to get an image of the assembled array? Should we try to get a hold of a v4 SnapOS to see if fsck is improved? Any ideas would be greatly appreciated.

Thanks soo much,
Mike

PS: I'm attaching a recent boot log in case it helps.