[sheepdog-users] cluster reweight works fine

[Joseph Glanville]

Awesome, I will update my cluster and try this out!

Joseph.

On Thu, May 30, 2013 at 1:33 AM, Valerio Pachera <sirio81 at gmail.com> wrote:
> I've been testing reweight on my testing cluster and it seems to work fine.
> Cluster has been started by
> Node 0,1,2
>   sheep -w size=20000 /sheep/meta,/sheep/sda
> Node 3
>   sheep -w size=20000 /sheep/meta,/sheep/sda
>
> sda is 50G, sdb is 5G.
> I created a few vdi and run a guest.
> Then I added the small disk (sdb) to Node 1,2,3; and the big disk to node 3.
> With the guest running, I used 'cluster reweight' and waited for the
> recovery to be complete.
> Then you see the results.
>
> root at test004:~# collie node list
> M   Id   Host:Port         V-Nodes       Zone
> -    0   192.168.2.44:7000      64  738371776
> -    1   192.168.2.45:7000      64  755148992
> -    2   192.168.2.46:7000      64  771926208
> -    3   192.168.2.47:7000      64  788703424
>
> root at test004:~# collie node info
> Id      Size    Used    Avail   Use%
>  0      50 GB   5.1 GB  45 GB    10%
>  1      50 GB   5.6 GB  44 GB    11%
>  2      50 GB   6.3 GB  44 GB    12%
>  3      4.6 GB  500 MB  4.1 GB   10%
> Total   154 GB  17 GB   137 GB   11%
> Total virtual image size        17 GB
>
> root at test004:~# collie node md info --all
> Id      Size    Used    Avail   Use%    Path
> Node 0:
>  0      50 GB   5.1 GB  45 GB    10%    /sheep/sda
> Node 1:
>  0      50 GB   5.6 GB  44 GB    11%    /sheep/sda
> Node 2:
>  0      50 GB   6.3 GB  44 GB    12%    /sheep/sda
> Node 3:
>  0      4.6 GB  500 MB  4.1 GB   10%    /sheep/sdb
>
> Node 0,1,2
> collie node md plug /sheep/sdb
> Node 3
> collie node md plug /sheep/sda
>
> root at test004:~# collie node info
> Id      Size    Used    Avail   Use%
>  0      55 GB   5.1 GB  50 GB     9%
>  1      55 GB   5.6 GB  49 GB    10%
>  2      55 GB   6.3 GB  48 GB    11%
>  3      55 GB   500 MB  54 GB     0%
> Total   218 GB  17 GB   201 GB    8%
> Total virtual image size        17 GB
>
> root at test004:~# collie node md info --all
> Id      Size    Used    Avail   Use%    Path
> Node 0:
>  0      50 GB   4.7 GB  45 GB     9%    /sheep/sda
>  1      4.6 GB  356 MB  4.3 GB    7%    /sheep/sdb
> Node 1:
>  0      50 GB   5.2 GB  45 GB    10%    /sheep/sda
>  1      4.6 GB  464 MB  4.2 GB    9%    /sheep/sdb
> Node 2:
>  0      50 GB   5.8 GB  44 GB    11%    /sheep/sda
>  1      4.6 GB  516 MB  4.1 GB   10%    /sheep/sdb
> Node 3:
>  0      4.6 GB  48 MB   4.6 GB    1%    /sheep/sdb
>  1      50 GB   452 MB  50 GB     0%    /sheep/sda
>
> root at test004:~# collie cluster reweight
>
> root at test004:~# collie node recovery
> Nodes In Recovery:
>   Id   Host:Port         V-Nodes       Zone
>    3   192.168.2.47:7000      64  788703424
>
> root at test004:~# collie node info
> Id      Size    Used    Avail   Use%
>  0      55 GB   4.1 GB  50 GB     7%
>  1      55 GB   4.3 GB  50 GB     7%
>  2      55 GB   5.0 GB  50 GB     9%
>  3      55 GB   4.1 GB  50 GB     7%
> Total   218 GB  17 GB   201 GB    8%
> Total virtual image size        17 GB
>
> root at test004:~# collie node md info --all
> Id      Size    Used    Avail   Use%    Path
> Node 0:
>  0      50 GB   3.8 GB  46 GB     7%    /sheep/sda
>  1      4.6 GB  304 MB  4.3 GB    6%    /sheep/sdb
> Node 1:
>  0      50 GB   4.0 GB  46 GB     7%    /sheep/sda
>  1      4.6 GB  296 MB  4.3 GB    6%    /sheep/sdb
> Node 2:
>  0      50 GB   4.6 GB  45 GB     9%    /sheep/sda
>  1      4.6 GB  348 MB  4.3 GB    7%    /sheep/sdb
> Node 3:
>  0      4.6 GB  376 MB  4.2 GB    7%    /sheep/sdb
>  1      50 GB   3.7 GB  46 GB     7%    /sheep/sda
>
> root at test004:~# collie node list
> M   Id   Host:Port         V-Nodes       Zone
> -    0   192.168.2.44:7000      64  738371776
> -    1   192.168.2.45:7000      64  755148992
> -    2   192.168.2.46:7000      64  771926208
> -    3   192.168.2.47:7000      64  788703424
> --
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