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Old 06-09-2013, 04:34 PM   #1
Registered: Feb 2011
Location: North Central Washington
Distribution: Debian, OpenSUSE, Kali, Ubuntu
Posts: 178

Rep: Reputation: 7
Can't mount mirrored array -- bad geometry

Hey all, I'm trying to mount a 1TB mirrored array using MDADM and not having any luck. I can fdisk partitions on the drives (type fd -- Linux raid auto), I can build the array using MDADM and I can put a file system on the array but when I try to mount it I get the following error message:

root@srvBackup:/home/jobee# mount /dev/md0 /mnt/raid
mount: wrong fs type, bad option, bad superblock on /dev/md0,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so
Running dmesg | tail gives me this explanation:

[100342.913214] EXT4-fs (md0): bad geometry: block count 488380160 exceeds size of device (244190100 blocks)
I've tried removing the superblocks, I've tried re-running MDADM, I've even used fdisk to remove and recreate partitions on the drives but no joy. Any ideas?


Joe B
Old 06-10-2013, 02:11 PM   #2
Registered: Jan 2010
Posts: 65

Rep: Reputation: 21
Pls post output of

'mdadm --detail /dev/md0'


'mdadm --detail --scan'


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