[DRBD-user] DRBD with disk failure.

Lars Ellenberg Lars.Ellenberg at linbit.com
Tue Jul 25 04:01:37 CEST 2006

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

/ 2006-07-24 17:31:37 -0400
\ Brent A Nelson:
> I experienced a disk failure today when doing mkfs on one of 6 drbd devices, which resulted in the process getting 
> stuck in the "D" state.
> dmesg shows a series of SCSI errors and then the following on the primary:
> drbd3: drbd_md_sync_page_io(,390455306,WRITE) failed!
> drbd3: Notified peer that my disk is broken.
> The secondary went to the "ServerForDLess" state and the primary went to "DiskLessClient".
> This all seems like a normal drbd response, right? But, although I think I can read from the device (read attempts 
> don't report any errors, and the secondary drbd processes seem to be busy serving data when I attempt a read), I 
> can't seem to write to it.  I imagine if I switch the secondary over to primary all will be well, but the primary 
> should be able to pass both reads and writes to the secondary in the event of its own disk failing, correct?

well, normally it does.
maybe it now just takes longer?

> Is there something I'm doing wrong or a bug in my drbd (version 0.7.15 in Ubuntu Dapper but running a 2.6.12 
> kernel)?
> Thanks,
> Brent Nelson
> Director of Computing
> Dept. of Physics
> University of Florida

: Lars Ellenberg                                  Tel +43-1-8178292-0  :
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