[DRBD-user] Please help with slow Replication / Syncing on debian squeeze 6.0, 8-disk RAID6

Uwe Schuerkamp uwe.schuerkamp at nionex.net
Mon Mar 12 14:57:29 CET 2012

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


On Mon, Mar 12, 2012 at 02:28:42PM +0100, Michael Schwartzkopff wrote:
> > On Mon, Mar 12, 2012 at 01:25:12PM +0100, Michael Schwartzkopff wrote:
> > > Hm,
> > > 
> > > somethings do not fit together. You configured a rate of 102M (Byte/s)
> > > and when you ask the DRBD it tells you that your configured a rate of
> > > 11M (Byte/s)
> > > 
> > > Did your show us the /proc/drbd output of the above given config?
> > 
> > Hello Michael,
> > 
> > here's the /proc/drbd output:
> > 
> > # 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:2371132 nr:0 dw:0 dr:2378656 al:0 bm:144 lo:1 pe:2556 ua:1806
> >     ap:0 ep:1 wo:d oos:3152530292
> >         [>....................] sync'ed:  0.1% (3078640/3080948)M
> >         finish: 59:10:08 speed: 14,628 (12,296) K/sec
> 
> What about
> drbdsetup /dev/drbd... show?
> 
> -- 

Hello Michael,

I think I included this one with the first email, here's the current
setup: 

# drbdsetup /dev/drbd0 show
disk {
        size                    0s _is_default; # bytes
        on-io-error             pass_on _is_default;
        fencing                 dont-care _is_default;
        no-disk-barrier ;
        no-disk-flushes ;
        no-md-flushes   ;
        max-bio-bvecs           0 _is_default;
}
net {
        timeout                 60 _is_default; # 1/10 seconds
        max-epoch-size          2048 _is_default;
        max-buffers             2048 _is_default;
        unplug-watermark        128 _is_default;
        connect-int             10 _is_default; # seconds
        ping-int                10 _is_default; # seconds
        sndbuf-size             0 _is_default; # bytes
        rcvbuf-size             0 _is_default; # bytes
        ko-count                0 _is_default;
        cram-hmac-alg           "sha1";
        shared-secret           "XXXXXXXXXXXXXXXXXXXX";
        after-sb-0pri           disconnect _is_default;
        after-sb-1pri           disconnect _is_default;
        after-sb-2pri           disconnect _is_default;
        rr-conflict             disconnect _is_default;
        ping-timeout            5 _is_default; # 1/10 seconds
}
syncer {
        rate                    92160k; # bytes/second
        after                   -1 _is_default;
        al-extents              127 _is_default;
}
protocol C;
_this_host {
        device                  minor 0;
        disk                    "/dev/vg00/lvol0";
        meta-disk               internal;
        address                 ipv4 192.168.168.200:7788;
}
_remote_host {
        address                 ipv4 192.168.168.210:7788;
}


All the best, Uwe 

-- 
uwe.schuerkamp at nionex.net fon: [+49] 5242.91 - 4740, fax:-69 72
Hauptsitz: Avenwedder Str. 55, D-33311 Gütersloh, Germany
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