Hi Thanks a lot, this helped me to get the raid up again. Now I am trying to copy anything to another place. ATM I am still not sure about what caused the crash, maybe you are right and there is a hw problem. I assume it is the memory. thx thomas Zitat von Neil Brown <neilb@xxxxxxx>: > On Wednesday January 25, mdadm@xxxxxxxxxxxx wrote: > > Hi, > > > > I am using a 8 disc scsi raid5 array on a fedora 3 system. > > > > after a system crash, while the array was rebuilding a missing hd, > > i am now unable to get this array running again. > > > > thats all i get (/dev/sdr1 is not the one which was rebuild): > > # mdadm -R /dev/md4 > > mdadm: failed to run array /dev/md4: Invalid argument > > > > # mdadm -A /dev/md4 - > > v /dev/sdk1 /dev/sdl1 /dev/sdm1 /dev/sdn1 /dev/sdo1 /dev/sdp1 /dev/sdq1 > /dev/sdr > > 1 > > looking for devices for /dev/md4 > > /dev/sdk1 is identified as a member of /dev/md4, slot 0. > > /dev/sdl1 is identified as a member of /dev/md4, slot 1. > > /dev/sdm1 is identified as a member of /dev/md4, slot 2. > > /dev/sdn1 is identified as a member of /dev/md4, slot 8. > > /dev/sdo1 is identified as a member of /dev/md4, slot 4. > > /dev/sdp1 is identified as a member of /dev/md4, slot 5. > > /dev/sdq1 is identified as a member of /dev/md4, slot 6. > > mdadm: superblock on /dev/sdr1 doesn't match others - assembly aborted > > > > > > # mdadm --examine /dev/sdk1 > > /dev/sdk1: > > Magic : a92b4efc > > Version : 00.90.01 > > UUID : 232635af:1afe6aa5:e06f8828:99966325 > snip > > > > > > > > # mdadm --examine /dev/sdr1 > > /dev/sdr1: > > Magic : a92b4efc > > Version : 00.90.01 > > UUID : 232605af:1afe6aa5:e06f8828:99966325 > > Putting those UUIDs right next to each other: > > UUID : 232635af:1afe6aa5:e06f8828:99966325 > > UUID : 232605af:1afe6aa5:e06f8828:99966325 > ^ > | > > We have 2 bits of difference. This suggests a bad drive, bad RAM, bad > cabling or.... something. > > You could be able to recreate the array: > > mdadm -C /dev/md4 -l5 -n8 -c4 -pls /dev/sdk1 /dev/sdl1 /dev/sdm1 \ > missing /dev/sdo1 /dev/sdp1 /dev/sdq1 /dev/sdr1 > > (double check all of that before you actually run it, I think I have > the order right...) > but be warned that you have some dodgey hardware somewhere, and data > corruption is a real possibility.... What caused the system crash? > > NeilBrown > ---------------------------------------------------------------------- This mail sent through L&R NetCon webmail Client - 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
