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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 - 02:01:03 GMT
To: drbd-user@lists.linbit.com

A-Ha once again! :)

I was trying to mount the secondary /dev/drbd1. DUH.

Can't do that!!

On the primary:
I created a mount point in root called drbd1:
mkdir /drbd1

I made a filesystem on the drbd device:
mkfs.ext3 /dev/drbd1

I mounted the device:
mount -t ext3 /dev/drbd1 /drbd1

Voila!!! :)

On Wed, Mar 17, 2010 at 6:29 PM, Cameron Smith <velvetpixel@gmail.com>wrote:

> 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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