[CentOS] Problem resizing partition of nfs volume

[Dan Yamins]

On Thu, Aug 12, 2010 at 6:25 PM, David Véjar
<dvejar at ferreteriasantiago.cl>wrote:

> cuak
>


?


>
> -----Mensaje original-----
> De: centos-bounces at centos.org [mailto:centos-bounces at centos.org] En nombre
> de John R Pierce
> Enviado el: jueves, 12 de agosto de 2010 18:22
> Para: CentOS mailing list
> Asunto: Re: [CentOS] Problem resizing partition of nfs volume
>
>  On 08/12/10 2:56 PM, Dan Yamins wrote:
> > Hi:
> >
> > I have an NFS volume that I'm trying to resize a partition on.
> >
> > Something about the fdisk process is corrupting something on the drive
> >
> > Before running fdisk, I can mount the volume find:
> >
> > $ mount /dev/sdo1 /home
> >
> > ... and the volume is mounted fine.
> >
> > And,
> > $ e2fsck -f /dev/sdo1
> > /dev/sdo1: clean, ...
> >
> >
> > But then I run fdisk to rewrite the partition table of this drive, to
> > expand the /dev/sdo1 partition w/o losing data:
> >
> > $ fdisk /dev/sdo
> > # 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
> >
> > Calling ioctl() ...
> > Syncing disks ...
> >
> > But then something has gone wrong.
> >
> > $ e2fsck -f /dev/sdo1
> > e2fsck 1.39 (29-May-2006)
> > Couldn't find ext2 superblock, trying backup blocks...
> > e2fsck: Bad magic number in super-block while trying to open /dev/sdm1
> ...
> >
> >
> > And I can't mount the volume any more:
> > $ mount /dev/sdo1 /home
> > mount: you must specify the filesystem type
> >
> > What am I doing wrong? Am I missing a step of the process?
>
> yeah, you deleted your file system, then created a new empty partition.
>
> instead, you should have used parted(8) or similar to expand the
> partition, then used resize2fs(8) to expand the file system on this
> partition to its new size.
>
> me, I'd strongly suggest doing a full backup of the partition first with
> dump(8)
>
>
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