[DRBD-user] drbd sync very slow

Marcel Kraan marcel at kraan.net
Mon Jun 4 09:48:02 CEST 2012

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


Hello,

Thanks for your resonse.

i have already set the rate to 50M
" finish: 0:49:23 speed: 596 (2,236) want: 51,200 K/sec "

this current speed is 596 or wanted rate  51200 ..
So the sync speed is fast enough i think




On 4 jun. 2012, at 09:45, zf5984599 wrote:

> Did you set one "syncer rate" in your drbd.conf?
> such as:
>         syncer
>         {
>                 rate 200M;
>         }
>  
>  
> B.R.
> Zheng Feng
>  
>  
> From: Marcel Kraan
> Date: 2012-06-04 15:38
> To: drbd-user
> Subject: [DRBD-user] drbd sync very slow
> Hello,
>  
> I use DRBD for a while now.
> But today after "image creation crash of 850GB"  a the disks where out of sync
>  
> So i synced the secondary  again with the primary
>  
> secondary
> drbdadm secondary main
> drbdadm disconnect main
> drbdadm -- --discard-my-data connect main
>  
> primary
> drbdadm connect main
>  
>  
> at this time the sync speed was very slow.
> my normal speed is between 29000 and 32000 on a normal cat5e/gigabit network
> i have also rebooted the servers.
>  
> PRIMARY:
> version: 8.3.12 (api:88/proto:86-96)
> GIT-hash: e2a8ef4656be026bbae540305fcb998a5991090f build by phil at Build64R6, 2012-04-08 09:36:52
>  0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
>     ns:1434576 nr:0 dw:3680 dr:1435381 al:2 bm:4716 lo:0 pe:735 ua:0 ap:0 ep:1 wo:b oos:1805576
> [=======>............] sync'ed: 44.4% (1805576/3236076)K
> finish: 0:49:17 speed: 600 (2,364) K/sec
>  
> SECONDARY:
> [root at storage2 ~]# cat /proc/drbd 
> version: 8.3.12 (api:88/proto:86-96)
> GIT-hash: e2a8ef4656be026bbae540305fcb998a5991090f build by phil at Build64R6, 2012-04-08 09:36:52
>  0: cs:SyncTarget ro:Secondary/Primary ds:Inconsistent/UpToDate C r-----
>     ns:0 nr:1459708 dw:1459100 dr:0 al:0 bm:5440 lo:154 pe:571 ua:152 ap:0 ep:1 wo:b oos:1778116
> [========>...........] sync'ed: 45.2% (1778116/3236076)K
> finish: 0:49:23 speed: 596 (2,236) want: 51,200 K/sec
>  
>  
> network
> root at storage1 ~]# ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:16:3E:27:85:5A  
>           inet addr:192.168.123.101  Bcast:192.168.123.255  Mask:255.255.255.0
>           inet6 addr: fe80::216:3eff:fe27:855a/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:59985 errors:0 dropped:1 overruns:0 frame:0
>           TX packets:135399 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:42249562 (40.2 MiB)  TX bytes:175295376 (167.1 MiB)
>           Interrupt:11 Base address:0x4000 
>  
>  
> [root at storage2 ~]# ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:16:3E:30:7D:27  
>           inet addr:192.168.123.102  Bcast:192.168.123.255  Mask:255.255.255.0
>           inet6 addr: fe80::216:3eff:fe30:7d27/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:99968 errors:0 dropped:39 overruns:0 frame:0
>           TX packets:53516 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:124786225 (119.0 MiB)  TX bytes:41878110 (39.9 MiB)
>           Interrupt:11 Base address:0x4000 
>  
>  
>  
> Does anyone has a clue what i can do?
>  
>  
>  
>  
> Marcel Kraan
>  
>  
>  
>  
>  
> _______________________________________________
> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user
>  

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