[DRBD-user] XFS with DRBD problem

David Huang david_huang at proware.com.tw
Wed Aug 24 08:34:16 CEST 2005

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

This mail has been scanned by InterScan MSS.

Thanks for quick reply :)

the attachment is the log if I execute xfs_repair on the volume which has problem (source volume is damaged and unable to mount ,but remote volume is mounted successfully). It seems the primary supreblock is damaged. After xfs_repair, I am able to mount the volume, however a directory called "lost+found" is created.

Is it because I resized the volume and this move demaged the volume? 
I was trying to "drbdadm down" the volume, shrinked the volume by 128MB (to remove metadata) then mount the lvm device.

David Huang

-----Original Message-----
From: drbd-user-bounces at lists.linbit.com [mailto:drbd-user-bounces at lists.linbit.com]On Behalf Of Lars Ellenberg
Sent: Tuesday, August 23, 2005 4:53 PM
To: drbd-user at lists.linbit.com
Subject: Re: [DRBD-user] XFS with DRBD problem

/ 2005-08-23 12:04:32 +0800
\ David Huang:
> Hi DRBD users
> Does anyone have problem with DRBD on LVM2 and XFS (yes, I have to use
> XFS)? I use this combination on my system. Sometimes DRBD works
> fine,but sometimes I am unable to mount the drbd device or the LVM
> device after replication. Sometimes I am able to mount the filesystem,
> however the contains are lost.
> The filesystem can be fixed by xfs_repair most of time. xfs_repair
> always say that the superblock is broken (or damaged? forgot the
> correct term). I think it is a quite serious issue.

since we know people are using it successfully since over a year in not
too small production environments, I'm very confident that whatever
weirdness you see is not drbds fault.

1. make sure you use at least 8K stack size in your kernel.
2. make sure you use a or later kernel.
   (the bio-clone data corruption issue)
3. make sure you use recent lvm and xfs and whatnot tools.

>  The attachment is the kernel messages. Any helps and suggestions are welcome.

sorry, no time for that, right now...
but one thing is strange from a glance:
sometimes I see 
> XFS mounting filesystem drbd1

then I see
> XFS mounting filesystem dm-5

and I recommend to explicitly specify the file system type,
to avoid mounts guessing heuristics:
> FAT: Unrecognized mount option "usrquota" or missing value


: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :
please use the "List-Reply" function of your email client.
drbd-user mailing list
drbd-user at lists.linbit.com

More information about the drbd-user mailing list