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drbd-user: Re: [DRBD-user] Synced or not?

Re: [DRBD-user] Synced or not?

From: Cameron Smith <velvetpixel_at_nospam>
Date: Thu Mar 18 2010 - 01:29:15 GMT
To: drbd-user@lists.linbit.com

Still a little fuzzy about where my data can go in relation to drbd.

My lower level is:
/dev/sda2 /data

my drbd device is:
/dev/drbd1

The docs say not to access the lower level device after drbd is running so
where do I put my files and data?
If it's actually on the drbd1 device how to I access that? I cannot mount it
like a partition using mount.

My config still looks like:

global {
  usage-count yes;
}
common {
  protocol C;
}
resource r0 {
  on clst01.example.net {
    device /dev/drbd1;
    disk /dev/sda2;
    address 10.233.2.71:7789;
    meta-disk /dev/sda6[0];
  }
  on clst02.example.net {
    device /dev/drbd1;
    disk /dev/sda2;
    address 10.233.2.72:7789;
    meta-disk /dev/sda6[0];
  }
}

Thanks
Cameron

On Wed, Mar 17, 2010 at 2:40 PM, Cameron Smith <velvetpixel@gmail.com>wrote:

> Excellent!
> Thanks for the clarification :)
>
>
> On Wed, Mar 17, 2010 at 1:50 PM, Peter den Hartog <
> peterdenhartog@gmail.com> wrote:
>
>> What David said.. What file system are you using? ext3? then you will only
>> see the changes if the primary actually fails on the first machine.
>>
>> and oh you might want to higher up your sync rate, if you don't want to
>> wait for 4 days for DRBD to finish the first sync :-D.
>>
>>
>>
>> On Wed, Mar 17, 2010 at 4:40 PM, Cameron Smith <velvetpixel@gmail.com>wrote:
>>
>>> I am stuck.
>>>
>>> I did in an initial install of DRBD and was able to achieve a sync from
>>> primary to secondary!
>>>
>>> Maybe.
>>>
>>> My partition that is source on primary and destination on secondary is:
>>>
>>> /dev/sda2 /data
>>>
>>> When I create files in the /data directory I can see that DRBD is
>>> recognizing that things are changing and when I run:
>>>
>>> cat /proc/drbd
>>>
>>> on both primary and secondary I see they both change if I modify or add
>>> files in /data on the primary.
>>>
>>>
>>> My question is why do I not see those same files on /data on the
>>> secondary?
>>>
>>> Shouldn't they be there?
>>>
>>>
>>> Here is the output of cat /proc/drbd from both systems:
>>>
>>> [[root@clst01 ~]# cat /proc/drbd
>>> version: 8.0.16 (api:86/proto:86)
>>> GIT-hash: d30881451c988619e243d6294a899139eed1183d build by
>>> mockbuild@v20z-x86-64.home.local, 2009-08-22 13:26:57
>>>
>>> 1: cs:SyncSource st:Primary/Secondary ds:UpToDate/Inconsistent C r---
>>> ns:712320 nr:0 dw:0 dr:712320 al:0 bm:43 lo:0 pe:0 ua:0 ap:0
>>> [>....................] sync'ed: 1.2% (62300/62996)M
>>> finish: 44:18:11 speed: 376 (320) K/sec
>>> resync: used:0/61 hits:44476 misses:44 starving:0 dirty:0 changed:44
>>> act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
>>>
>>>
>>>
>>> [root@clst02 ~]# cat /proc/drbd
>>> version: 8.0.16 (api:86/proto:86)
>>> GIT-hash: d30881451c988619e243d6294a899139eed1183d build by
>>> mockbuild@v20z-x86-64.home.local, 2009-08-22 13:26:57
>>>
>>> 1: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
>>> ns:0 nr:718400 dw:718400 dr:0 al:0 bm:43 lo:0 pe:0 ua:0 ap:0
>>> [>....................] sync'ed: 1.2% (62292/62996)M
>>> finish: 33:13:27 speed: 416 (320) K/sec
>>> resync: used:0/61 hits:44856 misses:44 starving:0 dirty:0 changed:44
>>> act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
>>>
>>>
>>> Thanks!
>>> Cameron
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> drbd-user mailing list
>>> drbd-user@lists.linbit.com
>>> http://lists.linbit.com/mailman/listinfo/drbd-user
>>>
>>>
>>
>>
>> --
>> Groet // Kind regards,
>> Peter den Hartog
>>
>>
>

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