tewner at gmail.com
Wed Jul 25 08:07:32 CEST 2007
On 7/24/07, Lars Ellenberg <lars.ellenberg at linbit.com> wrote:
> please, when posting to mailing lists,
> do use text/plain mail.
> On Tue, Jul 24, 2007 at 09:07:23AM +0200, caubert wrote:
> > Hi list,
> > I have got a serious problem with drbd-0.7.21-1 between two server
> > installed with Suse Linux Enterprise Server 9 SP3.
> > Sometime synchronization is down and `cat /proc/drbd`show this errors
> > : "ServerForDLess" and "DiskForDLess"
> if you had looked into the kernel log,
> you had seen the io subsystem report io errors.
What in his /proc/drbd output specifically points that out?
BTW - I'm following your thread on the linux kernel list - Though I don't
have any pull there, I did plug drbd on kerneltrap :-)
your hard drive is broken.
> unfortunatley, sometimes it cannot
> cope with failing hardware gracefully, and gets stuck...
> one typical operating system behaviour in presence of io errors
> is to become unresponsive... linux does not too bad, though.
> drbd 8 has much improvements in coping with hardware
> (well, lower-layer) errors. but still,
> drbd cannot fix hardware.
> you should have a raid1 (raid5, ...) below drbd.
> you should have monitoring in place to alert you
> when there are io errors, e.g. SMART monitor your disks,
> monitor your hardware raid status. at minimum have a logcheck
> that scans for certain patterns in log files.
> : Lars Ellenberg Tel +43-1-8178292-0 :
> : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
> : Vivenotgasse 48, A-1120 Vienna/Europe http://www.linbit.com :
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