[DRBD-user] Re: Strange behaviour (mine or drbd's, im not sure yet)

alex borges alex at co.com.mx
Mon Oct 8 22:41:51 CEST 2007

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Okay, we are going to do it all over again. It doesnt seem to be the
problem though, weve been using drbd for many years now in many
deployments. Im pretty sure we are NOT using mkfs /underlying/partition
and then attempting to mount drbd0. We are creating the drbd disk, then
mkfs -j /dev/drbd0 and then we nmount drbd0, which is the way it should
work afaik.

So, ill keep you guys posted, but i think im heading for trouble anyway.
If its not the "using underlying partition" issue, what else could it be?

Lars Ellenberg wrote:
> On Thu, Oct 04, 2007 at 11:39:15AM -0500, Alex Borges wrote:
>> Okay...
>> DRBD vanilla (from the drbd site) on RHEL5. It all works smoothly, my
>> little cluster works very well and I thank you guys for that.
>> Thing is, we tried backuping the drbd filesystem with amanda, which uses
>> tar and the dump command to find out the size.
>> It all should be working well if not because the dump command gives
>> amanda this error:
>> [root at fw amanda]# su - amandabackup
>> -sh-3.1$ /sbin/dump -S /hadisk
>> /dev/drbd0: Can't read next inode while scanning inode #6094848
>> "Okay then", we thought, "lets check our filesystem on the secondary
>> server while drbd is disconnected":
>> [root at fw2 ~]# fsck.ext3 /dev/drbd0
>> e2fsck 1.39 (29-May-2006)
>> The filesystem size (according to the superblock) is 12209392 blocks
>> The physical size of the device is 12176624 blocks
>> Either the superblock or the partition table is likely to be corrupt!
>> Abort<y>? yes
>> Now I wouldnt mind the message if the filesystem was corrupted, but it
>> isnt. There isnt even one message on the logs complaining about the
>> filesystem, the whole thing works very well, it mounts without any
>> complaints.
> google for
>  drbd The filesystem size according to the superblock The physical size of the device is
> you should
> find at least
>  http://www.gossamer-threads.com/lists/drbd/users/7736#7736
>  http://www.gossamer-threads.com/lists/drbd/users/12626#12626
>  http://www.gossamer-threads.com/lists/drbd/users/12324#12324
> would you mind to put this into wiki.linux-ha.org/DRBD/FAQ ?
> thanks.

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