I don't understand exactly what it is to be done. If I can mount using a different superblock, do I then remove one of the drives from the array so I can put that drive away with my data until I can buy another drive to back up the data to? If so, how? How is it that the superblock on -both- drives got destroyed? Isn't RAID10 supposed to be mirrored? --- On Thu, 10/22/09, Majed B. <majedb@xxxxxxxxx> wrote: > From: Majed B. <majedb@xxxxxxxxx> > Subject: Re: Is My Data DESTROYED?! > To: "adfas asd" <chimera_god@xxxxxxxxx> > Cc: linux-raid@xxxxxxxxxxxxxxx > Date: Thursday, October 22, 2009, 7:12 PM > If you have bad sectors here > & there, and you didn't read the areas where the bad > sectors are, you won't get read errors. > > That's why you should always have smartd running along > with periodic sync_action -> check to force mdadm to > check the array. > > > > There's still hope in recovering your data. Don't > despair. > > On Fri, Oct 23, 2009 at 5:04 AM, > adfas asd <chimera_god@xxxxxxxxx> > wrote: > > > How could this possibly have > happened? The whole idea of RAID is so something like this > won't happen. > > > > > > I was using JFS. > > > > I've lost confidence now in mdadm. I have too much > data to back up practically, and am now at a loss. > > > > > > --- On Thu, 10/22/09, Majed B. <majedb@xxxxxxxxx> > wrote: > > > > > From: Majed B. <majedb@xxxxxxxxx> > > > Subject: Re: Is My Data > DESTROYED?! > > > To: "adfas asd" <chimera_god@xxxxxxxxx> > > > Cc: linux-raid@xxxxxxxxxxxxxxx > > > Date: Thursday, October 22, 2009, 6:40 PM > > > Seems like your > filesystem is > > > corrupted. Some filesystems have alternative > superblocks. > > > > > > you can mount your filesystem using an alternative > > > superblock using: mount -o sb=<offset> > > > You find the offset value by running a dry-run (test) > of > > > mkfs on your drives. It will print multiple offsets > for > > > superblocks. > > > > > > > > > > > > On Fri, Oct 23, 2009 at 4:36 AM, > > > adfas asd <chimera_god@xxxxxxxxx> > > > wrote: > > > > > > > > > Today I went in to my HTPC, to find it was hung and > the > > > drive light was stuck on. After all attempts to > revive it > > > or switch to terminal 2 or 3 had failed I reset the > system. > > > > > > > > > > > > It rebooted to tell me that it cannot mount /home, > the > > > RAID10offset2 device. > > > > > > > > > > > > When I reboot in recovery mode and try to mount > /dev/md0 > > > manually it informs me there is an invalid superblock! > I > > > shut down and unplugged each drive in turn, and > /proc/mdstat > > > shows the appropriate volume gone, but still can't > mount > > > the array. > > > > > > > > > > > > > > > > > > What has happened here? Is all my data destroyed? > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > To unsubscribe from this list: send the line > > > "unsubscribe linux-raid" in > > > > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > > > > > > > > > > -- > > > Majed B. > > > > > > > > > > > > > > > > > -- > > To unsubscribe from this list: send the line > "unsubscribe linux-raid" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > -- > Majed B. > > > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
