[DRBD-user] drbd read-only mode

Andreas Kurz andreas at hastexo.com
Thu Mar 15 15:35:11 CET 2012


On 03/15/2012 03:31 PM, зоррыч wrote:
> Read-only  flag stands on two nodes.
> 
> I will use a cluster file system (ocfs2 of gfs2) for the correct
> operation of the two disks

read-only flag??? Do you mean the ro:Primary/Primary which indicates the
role (ro..le) as being Primary on both sides?

Regards,
Andreas

-- 
Need help with DRBD?
http://www.hastexo.com/now

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> *From:*Marcelo Pereira [mailto:marcelops at gmail.com]
> *Sent:* Thursday, March 15, 2012 6:26 PM
> *To:* ??????
> *Subject:* Re: [DRBD-user] drbd read-only mode
> 
>  
> 
> Why do you want it to be primary on both nodes?????
> 
> --Marcelo
> 
> 
> On Mar 15, 2012, at 10:21 AM, "??????" <zorro at megatrone.ru
> <mailto:zorro at megatrone.ru>> wrote:
> 
>     Hi
> 
>     I installed 8.4.1 drdb.
> 
>     The cluster operates on a primary/primary mode.
> 
>     However, the drives are mounted in the mode of read-only
> 
>     [root at noc-1-m77 /]# cat /proc/drbd
> 
>     version: 8.4.1 (api:1/proto:86-100)
> 
>     GIT-hash: 91b4c048c1a0e06777b5f65d312b38d47abaea80 build by
>     root at noc-1-synt.rutube.ru <mailto:root at noc-1-synt.rutube.ru>,
>     2012-03-14 10:05:49
> 
>     0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
> 
>                                       ^^
> 
>         ns:0 nr:0 dw:0 dr:664 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0
> 
>      
> 
>     Why not activate the read-write mode?
> 
>      
> 
>     Config:
> 
>     [root at noc-1-synt /]# cat /etc/drbd.d/r0.res
> 
>     # create new
> 
>     resource r0 {
> 
>               startup {
> 
>                 wfc-timeout 20;
> 
>                 degr-wfc-timeout 10;
> 
>                 # we will keep this commented until tested successfully:
> 
>                 become-primary-on both;
> 
>               }
> 
>              net {
> 
>                 protocol C;
> 
>                 allow-two-primaries;
> 
>                 after-sb-0pri discard-zero-changes;
> 
>                 after-sb-1pri discard-secondary;
> 
>                 after-sb-2pri disconnect;
> 
>      
> 
>             }
> 
>         # DRBD device
> 
>         device /dev/drbd0;
> 
>         # phisical device
> 
>         disk /dev/vg_noc1synt/lv02;
> 
>         meta-disk internal;
> 
>         on noc-1-synt.rutube.ru <http://noc-1-synt.rutube.ru> {
> 
>            # IP address:port
> 
>            address 10.1.20.10:7788;
> 
>         }
> 
>         on noc-1-m77.rutube.ru <http://noc-1-m77.rutube.ru> {
> 
>            address 10.2.20.9:7788;
> 
>         }
> 
>     }
> 
>     [root at noc-1-synt /]#
> 
>      
> 
>      
> 
>      
> 
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