CentOS - Nov 2021 - mounting XFS RAID-1 disk partition that needs repair.

Hi,
> I'm attempting to extract data from a HD that has a bunch of linux-raid
> partitions, including one large one with data I need to save off the disk.
>
> I actually have two drives like that (both not from the same RAID pair),
> and one of them I was successful in creating a MD device so I could mount
> it RO and copy off a ton of data.
>
> the second one fails to mount, saying the XFS filesystem is corrupted.
> Attempting to run XFS_repair I get a message that the filesystem is XFS-1
> and I need an older version of XFS tools to do it.
Are you sure the filesystem is really corrupt? Maybe it's only your kernel
which doesn't understand the old XFS version?

To use older xfs_repair, you can just download an older version like
xfsprogs-2.9.4-1.el4.centos.x86_64.rpm, extract it to a directory and call
the xfs_repair binary from the package.

I'm not sure whether you need a matching xfs kernel module to run
xfs_repair successfully.

Regards,
Simon

I'll take a look at these two ideas soon. Thanks!

On Tue, Nov 23, 2021 at 10:03 AM Simon Matter <simon.matter at invoca.ch>
wrote:
> Hi,
>
> > I'm attempting to extract data from a HD that has a bunch of
linux-raid
> > partitions, including one large one with data I need to save off the
> disk.
> >
> > I actually have two drives like that (both not from the same RAID
pair),
> > and one of them I was successful in creating a MD device so I could
mount
> > it RO and copy off a ton of data.
> >
> > the second one fails to mount, saying the XFS filesystem is corrupted.
> > Attempting to run XFS_repair I get a message that the filesystem is
XFS-1
> > and I need an older version of XFS tools to do it.
>
> Are you sure the filesystem is really corrupt? Maybe it's only your
kernel
> which doesn't understand the old XFS version?
>
> To use older xfs_repair, you can just download an older version like
> xfsprogs-2.9.4-1.el4.centos.x86_64.rpm, extract it to a directory and call
> the xfs_repair binary from the package.
>
> I'm not sure whether you need a matching xfs kernel module to run
> xfs_repair successfully.
>
> Regards,
> Simon
>
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