Re: [Starcluster] enlarge volume

From: Dan Yamins <no email>
Date: Thu, 12 Aug 2010 17:29:54 -0400

Same error.

resize2fs 1.39 (29-May-2006)
resize2fs: Bad magic number in super-block while trying to open /dev/sdm1
Couldn't find valid filesystem superblock.

Something is corrupted on the drive when re-writing the partition table



On Thu, Aug 12, 2010 at 12:18 PM, Justin Riley <jtriley_at_mit.edu> wrote:

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> On 08/12/2010 11:43 AM, Dan Yamins wrote:
> > Does this completely confirm that the larger 500 GB volume is completely
> > "seen"? (And if so, does this mean that nothing like resize2fs or
> > xfs_growfs is necessary?)
>
> Dan,
>
> - From the fdisk -l output you sent you can see that you have a larger
> volume now (536.8GB) however your partition is still only 20GB big:
>
> 20964824(blocks)/1024.0(blocks/MB) ~= 20GB
>
> You need to recreate the partition to be 536.8GB and then run resize2fs:
>
> If you're doing this on a StarCluster you'll first need to run the
> following command (as root) on each node of the cluster for the
> mount_path defined in your volume's StarCluster config:
>
> $ umount MOUNT_PATH
>
> Then shutdown the nfs service (as root) on the master node:
>
> $ /etc/init.d/nfs stop
>
> After that do the following (as root) to resize your new volume:
>
> $ umount /dev/sdz
> $ fdisk /dev/sdz
>
> # Type 'd' to delete the primary partition
> # Type 'n' for new partition
> # Type 'p' for primary
> # Type '1' for 1st
> # Type Enter for 1st cylinder
> # Type Enter for last cylinder (full disk)
> # Type 'w' to finish
>
> $ e2fsck -f /dev/sdz1
> $ resize2fs -p /dev/sdz1
> $ fsck -f -y /dev/sdz1
>
> Then you should be able to mount the new volume:
>
> $ mount /dev/sdz1 MOUNT_PATH
>
> And start nfs again on the master:
>
> $ /etc/init.d/nfs start
>
> And re-mount the NFS drives for that volume on each of the nodes:
>
> $ mount MOUNT_PATH
>
> HTH,
>
> ~Justin
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Received on Thu Aug 12 2010 - 17:29:55 EDT