Hi,

This is why, Linbit should publish in the documentation, a list of hardware (NIC's) tested and certified as fully working.

I have seen this problem here in the list a couple of times in the last month. It's kind of sad spend time and a lot of money in good enterprise network hardware, and in the end things don't work as they should.

What do you guys think of this?

Cheers,

On 11/25/2009 09:57 AM, James Larcombe wrote:

Hi Mike,

Thanks for the quick response. Yes you are correct we are using 10gig fibre cards. I'm not sure we could change them though as the fibre modules used in them cost over £400 each.

Is there anything I can tweak in the drbd.conf file to get these to work.

James

*From:* Mike Lovell [mailto:[email protected]]
*Sent:* 24 November 2009 17:49
*To:* James Larcombe
*Cc:* [email protected]
*Subject:* Re: [DRBD-user] 8.3.5 Stalling on sync

James Larcombe wrote:

Hi List,

Please help. I have installed drbd 8.3.5 on Open Suse 11.1 (Kernel 2.6.27.29-0.1).

I have run drbdadm create-md dbms-test on one node and create-md dbms-test2 on the other node. I then ran drbdadm up all on both nodes. I then ran drbdadm -- --overwrite-data-of-my-peer primary dbms-test on the first node and the same with dbms-test2 on the other node. They then run for a short while before stalling. I have tried older version without success and turning the sync rate down does not make any difference. Downing the resources and bringing back up starts the sync again but this then stalls quickly.

I have attached /proc/drbd, /etc/drbd.conf and a section from /var/log/messages. Any pointers would be greatly appreciated.

version: 8.3.5 (api:88/proto:86-91)

GIT-hash: ded8cdf09b0efa1460e8ce7a72327c60ff2210fb build by r...@hp-tm-40, 2009-11-24 12:21:46

 0: cs:SyncSource ro:Secondary/Secondary ds:UpToDate/Inconsistent C r----

ns:160896 nr:0 dw:0 dr:160896 al:0 bm:9 lo:1 pe:0 ua:0 ap:0 ep:1 wo:b oos:926694296

        [>.] sync'ed:  0.1% (905040/905132)M      4972

        stalled

 1: cs:SyncTarget ro:Secondary/Secondary ds:Inconsistent/UpToDate C r----

ns:0 nr:2173248 dw:2173248 dr:0 al:0 bm:132 lo:0 pe:29878 ua:0 ap:0 ep:1 wo:b oos:777971256

        [>.] sync'ed:  0.3% (759736/761856)M

        Stalled


what kind of network are you using between the two servers? this is almost the exact same behavior i had when i was trying to get drbd to work over 10gig ethernet. turned out to be something in drbd didn't like something about the 10gig cards i had. i eventually had to change my network cards. what cards are you using? 1gig? 10gig? have you tried other cards? that is where i would look.

mike

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