[DRBD-user] DRBD metadata issue + replacing a disk

AALISHE aalishe at gmail.com
Thu Oct 15 14:59:31 CEST 2015

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


Thanks,  but am only using ext4 on both nodes

On Thu, Oct 15, 2015 at 3:27 PM, Trevor Hemsley <themsley at voiceflex.com>
wrote:

> On 15/10/15 13:02, Ammar Sheikh Saleh wrote:
>
> When ==>  During normal operation
>
>
> Are you attempting to use ext3/4 on both nodes at the same time?
>
>
> What's the IO stack below DRBD  ==>  4 Disks in JBOD
>
> Kernel upgrade is not possible now  ... but at the same time its not too
> old  ( v.2.6.32-431.20.3)
>
>
> That kernel belongs to CentOS/RHEL 6.5 which is now approaching 2 years
> old and has numerous security vulnerabilities present.
>
>
>
> On Thu, Oct 15, 2015 at 2:34 PM, Lars Ellenberg <lars.ellenberg at linbit.com
> > wrote:
>
>> On Thu, Oct 15, 2015 at 12:32:11PM +0300, Ammar Sheikh Saleh wrote:
>> > Hi all,
>> >
>> > I have one cluster with 2 nodes in active-active - master/slave setup
>> >
>> > I see the following error messages in the system logs:
>>
>> *when*.
>>
>> After a hard crash?
>> After a simulated Crash?
>> After a switchover?
>> After a failover?
>> During normal operation?
>>
>> What's the IO stack below DRBD?
>>
>> > Jan  5 11:07:23 lws1h1 kernel: EXT4-fs error (device drbd1):
>> ext4_mb_generate_buddy: EXT4-fs: group 3785: 27507 blocks in bitmap, 27576
>> in gd
>> > Jan  5 11:07:53 lws1h1 kernel: EXT4-fs error (device drbd1):
>> ext4_mb_generate_buddy: EXT4-fs: group 2437: 9219 blocks in bitmap, 32546
>> in gd
>> > Jan  5 11:07:53 lws1h1 kernel: EXT4-fs error (device drbd1):
>> ext4_mb_generate_buddy: EXT4-fs: group 2438: 9075 blocks in bitmap, 32760
>> in gd
>> > Jan  5 11:07:53 lws1h1 kernel: EXT4-fs error (device drbd1):
>> ext4_mb_generate_buddy: EXT4-fs: group 2442: 9078 blocks in bitmap, 32768
>> in gd
>> > Jan  5 20:18:27 lws1h1 kernel: JBD: Spotted dirty metadata buffer (dev
>> = drbd1, blocknr = 0). There's a risk of filesystem corruption in case of
>> system crash.
>> > Jan  5 22:02:18 lws1h1 kernel: EXT4-fs error (device drbd1):
>> ext4_mb_generate_buddy: EXT4-fs: group 3795: 32532 blocks in bitmap, 29780
>> in gd
>> > Jan  5 22:02:19 lws1h1 kernel: JBD: Spotted dirty metadata buffer (dev
>> = drbd1, blocknr = 0). There's a risk of filesystem corruption in case of
>> system crash.
>> >
>> > What is the appropriate action to fix this issue
>>
>> Did you even google for the message?
>> "JBD: Spotted dirty metadata buffer" turns up several bugzillas from
>> 2010 and 2012, suggesting kernel upgrade would help.
>>
>>
>> --
>> : Lars Ellenberg
>> : http://www.LINBIT.com | Your Way to High Availability
>> : DRBD, Linux-HA  and  Pacemaker support and consulting
>>
>> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
>> __
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>
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