From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Majed B." Subject: Re: Is My Data DESTROYED?! Date: Fri, 23 Oct 2009 05:43:15 +0300 Message-ID: <70ed7c3e0910221943v50d62cecg2a8741a7928ec064@mail.gmail.com> References: <70ed7c3e0910221912h70b33ca0m3df9eedd9a54c459@mail.gmail.com> <151153.66698.qm@web38804.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <151153.66698.qm@web38804.mail.mud.yahoo.com> Sender: linux-raid-owner@vger.kernel.org To: adfas asd Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids I don't know exactly what went wrong with your setup, so I can't tell why it's not mounting. Did you check the output of dmesg | tail after a failed mount? I'd suggest that you don't touch the disks, cables, nor the array. Try running sudo fsck /dev/md0 On Fri, Oct 23, 2009 at 5:18 AM, adfas asd wrot= e: > > I don't understand exactly what it is to be done. =C2=A0If I can moun= t 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 an= other drive to back up the data to? =C2=A0If so, how? > > How is it that the superblock on -both- drives got destroyed? =C2=A0I= sn't RAID10 supposed to be mirrored? > > --- On Thu, 10/22/09, Majed B. wrote: > > > From: Majed B. > > Subject: Re: Is My Data DESTROYED?! > > To: "adfas asd" > > Cc: linux-raid@vger.kernel.org > > 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 > > wrote: > > > > > > How could this possibly have > > happened? =C2=A0The whole idea of RAID is so something like this > > won't happen. > > > > > > > > > > > > I was using JFS. > > > > > > > > I've lost confidence now in mdadm. =C2=A0I have too much > > data to back up practically, and am now at a loss. > > > > > > > > > > > > --- On Thu, 10/22/09, Majed B. > > wrote: > > > > > > > > > From: Majed B. > > > > > Subject: Re: Is My Data > > DESTROYED?! > > > > > To: "adfas asd" > > > > > Cc: linux-raid@vger.kernel.org > > > > > 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=3D > > > > > 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 > > > > > wrote: > > > > > > > > > > > > > > > Today I went in to my HTPC, to find it was hung and > > the > > > > > drive light was stuck on. =C2=A0After 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! > > =C2=A0I > > > > > 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? =C2=A0Is all my data destroyed? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > To unsubscribe from this list: send the line > > > > > "unsubscribe linux-raid" in > > > > > > > > > > the body of a message to majordomo@vger.kernel.org > > > > > > > > > > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-inf= o.html > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > =C2=A0 =C2=A0 =C2=A0 =C2=A0Majed B. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > To unsubscribe from this list: send the line > > "unsubscribe linux-raid" in > > > > the body of a message to majordomo@vger.kernel.org > > > > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-info.= html > > > > > > > > > > -- > > =C2=A0 =C2=A0 =C2=A0 =C2=A0Majed B. > > > > > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-info.ht= ml -- =C2=A0 =C2=A0 =C2=A0 Majed B. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html