[DRBD-user] [DRBD-announce] drbd-8.3.3.tar.gz

Rainer Traut tr.ml at gmx.de
Tue Oct 6 14:31:40 CEST 2009

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

Lars Ellenberg schrieb:
> On Tue, Oct 06, 2009 at 12:53:20PM +0200, Rainer Traut wrote:
>> I see this in dmesg with 8.3.3 and RHEL5.4 x86_64:
>> block drbd1: write: error=-95 s=5767576s
>> block drbd1: Method to ensure write ordering: flush
>> while in earlier drbd version 8.3.2:
>> kernel: block drbd1: Method to ensure write ordering: barrier
>> Anything to be concerned?
> Nope.
> 95 is EOPNOTSUPP, barriers seem to be not supported on your lower level
> device, so DRBD falls back to "flush" mode.
> which, because implemented as "empty barriers" probably fail as well,
> so I guess it falls back further to "drain" mode pretty quickly.
> That should be no different between 8.3.2 and 8.3.3, though.

Yeah, nevertheless this has changed between 8.3.2 and 8.3.3 - only 
change was drbd update.

Sys: kernel 2.6.18-164.2.1.el5 x86_64

drbd on top of LVM:
device          /dev/drbd1;
disk            /dev/VG00/LVvm1slash;


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