Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Tue, Mar 13, 2012 at 11:09:05AM +0100, Michael Schwartzkopff wrote:
> > # cat /proc/drbd
> > version: 8.3.7 (api:88/proto:86-91)
> > srcversion: EE47D8BF18AC166BE219757
> > 0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C
> > r----
> > ns:873115000 nr:0 dw:2048 dr:873127461 al:1 bm:53289 lo:1 pe:3151
> > ua:1699 ap:0 ep:1 wo:d oos:2281801072
> > [====>...............] sync'ed: 25.6% (2228320/2992484)M
> > finish: 32:20:18 speed: 19,396 (12,256) K/sec
>
> Could you please show the /proc/drbd BEFORE and AFTER the drbdsetup command?
> Perhaps you switch the sync speed several times.
>
Here you go (snipped for brevity):
######################################################################
Current setting:
drbdsetup /dev/drbd0 show | grep rate
rate 30720k; # bytes/second
/proc/drbd on Slave node:
version: 8.3.7 (api:88/proto:86-91)
srcversion: EE47D8BF18AC166BE219757
0: cs:SyncTarget ro:Secondary/Secondary ds:Inconsistent/UpToDate C
r----
ns:0 nr:83468576 dw:83454884 dr:0 al:0 bm:5093 lo:3423 pe:57960
ua:3423 ap:0
ep:1 wo:b oos:2144478752
[>....................] sync'ed: 3.8% (2094216/2175716)M
finish: 46:07:34 speed: 12,912 (11,732) K/sec
######################################################################
Changing sync speed on master node:
# drbdsetup /dev/drbd0 syncer -r 110M
# drbdsetup /dev/drbd0 show | grep rate
rate 112640k; # bytes/second
/proc/drbd on client after waiting a couple of secs for stats to update:
version: 8.3.7 (api:88/proto:86-91)
srcversion: EE47D8BF18AC166BE219757
0: cs:SyncTarget ro:Secondary/Secondary ds:Inconsistent/UpToDate C
r----
ns:0 nr:84252128 dw:84237136 dr:0 al:0 bm:5141 lo:3748 pe:57829
ua:3748 ap:0
ep:1 wo:b oos:2143696500
[>....................] sync'ed: 3.8% (2093452/2175716)M
finish: 41:21:07 speed: 14,360 (11,732) K/sec
######################################################################
As for updating, I'd rather stay with the version from the Debian
repos if possible. The old system runs with a much older drbd version
and performance there seems fine for the moment.
All the best & thanks for your help,
Uwe
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