Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
My setup is a centos on 1 hdd with the drbd on it and aditinal 2 hdd set
as lvm for the XEN vm machines.
Drbdadm verify does not work on 8.0:
drbdadm verify r0
Unknown command 'verify'.
I am not sure how to fix this...
On 03/15/2012 11:19 AM, Caspar Smit wrote:
> Op 15 maart 2012 09:20 heeft Adi Spivak <adispi at compulab.co.il> het
> volgende geschreven:
>> Hi.
>> I ma using the drbd that comes with centos.
>> My centos version is 5.8
>>
>> My /proc/drbd say as following:
>>
>> version: 8.0.16 (api:86/proto:86)
>> GIT-hash: d30881451c988619e243d6294a899139eed1183d build by
>> mockbuild at v20z-x86-64.home.local, 2009-08-22 13:27:08
>>
>> 1: cs:Connected st:Primary/Secondary ds:UpToDate/UpToDate C r---
>> ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0
>> resync: used:0/61 hits:0 misses:0 starving:0 dirty:0 changed:0
>> act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
>>
>>
>> However, this is not true.
>> This LVM drive is connected to a XEN VM and after verifing the initial
>> sync and seeing that they are identical, i have made small changes to
>> the original machine by adding some files to the desktop and running
>> some updates.
>
> Hi,
>
> Do you have LVM on top of DRBD? Or DRBD on top of LVM?
>
> In the last case is true my guess is that you are exporting your LVM
> device to the XEN VM and not the /dev/drbd1 (which you SHOULD export)
>
> Making changes to the underlying device of DRBD does NOT replicate the
> changes to the second node and will result in out of sync blocks (oos
> on /proc/mdstat) after doing an online verify.
>
> You can run an online verify by following the instructions of the
> relevant documentation page on the linbit site.
>
> Best regards,
> Caspar
>
>>
>> The /proc/drbd keep cliaming they are uptodate, however, when i turn off
>> the vm on the primary and start on the secondary it is the same as the
>> original sync with none of my small changes.
>>
>> This is my drbd.conf (simple and taken from the guide and without the
>> IPs and real machine names):
>> #
>> # please have a a look at the example configuration file in
>> # /usr/share/doc/drbd/drbd.conf
>> #
>> global {
>> usage-count yes;
>> }
>> common {
>> protocol C;
>> }
>> resource r0 {
>> on san {
>> device /dev/drbd1;
>> disk /dev/mapper/storage-ranadtech;
>> address <IP>:7789;
>> meta-disk internal;
>> }
>> on sanbkp {
>> device /dev/drbd1;
>> disk /dev/mapper/storage-ranadtech;
>> address <IP>:7789;
>> meta-disk internal;
>> }
>> }
>>
>>
>> What do i need to change to make it work?
>>
>> Thank you.
>>
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