[Lustre-discuss] Active-Active failover configuration

[sheila.barthel at oracle.com]

Section 8.3.2.2 (Configuring Heartbeat) includes a worked example to 
configure OST failover (active/active):

http://wiki.lustre.org/manual/LustreManual18_HTML/Failover.html#50598002_pgfId-1295199

On 4/20/2010 6:42 AM, xgl at xgl.pereslavl.ru wrote:
> Greetings!
>
> Sorry for troubling you by such question but I cannot find example in documentation and meet some problems.
>
> I want to use Active/Active failover configuration. (Where can I find some examples?)
>
> I have 2 nodes - s1 and s2 used as OSS'es
> I also have 3 block devices
> (MDS) - 1Tb used as MDS|MDT
> (OST0) 8Tb used as OST1
> (OST1) 8Tb used as OST2
> All devices available from both OSS's.
>
> OST0 mounted on s1
> MDS and OST1 mounted on s2 in normal state.
>
> How can I configure system such way, that if one os OSS'es (s2, as an example), fails out, second OSS (s1) take control of all resources?
>
> I have heartbeat installed and configured.
> [root at s2 ~]# cat /etc/ha.d/haresources
> s1 Filesystem::/dev/disk/b801::/mnt/ost0::lustre
> s2 Filesystem::/dev/disk/b800::/mnt/mdt::lustre Filesystem::/dev/disk/8800::/mnt/ost1::lustre
>
> I configure system;
> On s2 I format and mount MDT and OST1
> mkfs.lustre --reformat --fsname=lustre --mgs --mdt /dev/disk/by-id/b800   
> mount -t lustre /dev/disk/b800 /mnt/mdt/
> mkfs.lustre --reformat --ost --fsname=lustre --mgsnode=192.168.11.12 at o2ib /dev/disk/8800
> mount -t lustre /dev/disk/8800 /mnt/ost1
>
> On s1 I format and mount OST0
> mkfs.lustre --reformat --ost --fsname=lustre --mgsnode=192.168.11.12 at o2ib /dev/disk/b801
> mount -t lustre /dev/disk/b801 /mnt/ost0
>
> service heartbeat up and running on both nodes.
>
> Where have I add some parameters to have lustre up and running if s2 going down? Or where can I find some examples?
> How can s1 takeover MDS (/mnt/mdt) and OST1 (/mnt/ost1) that usually mounted on s2?
>
> Thanks,
> Katya
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>   

-- 
Oracle <http://www.oracle.com>
Sheila Barthel | Documentation Lead
Phone: +1 3035622468 <tel:+1%203035622468>
Oracle Lustre Group

Green Oracle <http://www.oracle.com/commitment> Oracle is committed to 
developing practices and products that help protect the environment
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20100420/b2ba7339/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: oracle_sig_logo.gif
Type: image/gif
Size: 658 bytes
Desc: not available
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20100420/b2ba7339/attachment.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: green-for-email-sig_0.gif
Type: image/gif
Size: 356 bytes
Desc: not available
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20100420/b2ba7339/attachment-0001.gif>