[Sheepdog] A question about vdi's disappearance.
Yibin Shen
zituan at taobao.com
Tue Nov 22 12:10:43 CET 2011
On Tue, Nov 22, 2011 at 6:41 PM, Tao Lin <especiallyl at 126.com> wrote:
> Hi,
> I'm now testing this interesting project and I went into a problem during the
> process.
> I have 3 host machines, I used commands on machine A as following:
> [root at novanode1 /home/sae]# sheep /home/sae/sheep-test
> [root at novanode1 /home/sae]# sudo mount -o remount,user_xattr /
> [root at novanode1 /home/sae]# collie cluster format --copies=3
>
> On machine B:
> root at node2:/home/sae# sheep /home/sae/sheep-test
> root at node2:/home/sae# sudo mount -o remount,user_xattr /
>
> Up to now,it seemed that sheepdog was working well. I then created two vdis
> using commands:
> [root at novanode1 /home/sae]# collie vdi create alice 5M
> [root at novanode1 /home/sae]# collie vdi create BOB 5M
>
> Anyway, I was able to list all the vdis I had created.
> [root at novanode1 /home/sae]# collie vdi list
> name id size used shared creation time vdi id
> ------------------------------------------------------------------
> alice 1 5.0 MB 0.0 MB 0.0 MB 2011-11-22 04:45 a03907
> BOB 1 5.0 MB 0.0 MB 0.0 MB 2011-11-22 04:45 a67b34
>
> Then I tried to add machine C to the system, inputting commands as below:
> root at node3:/home/sae# sheep /home/sae/sheep-test
> root at node3:/home/sae# sudo mount -o remount,user_xattr /
>
>
> Well, sheep was still working well.
> root at node3:/home/sae# collie vdi list
> name id size used shared creation time vdi id
> ------------------------------------------------------------------
> alice 1 5.0 MB 0.0 MB 0.0 MB 2011-11-22 17:45 a03907
> BOB 1 5.0 MB 0.0 MB 0.0 MB 2011-11-22 17:45 a67b34
>
>
>
> After having uesd this command rashly:collie cluster format --copies=2, all the
> vdis were gone!
Yes, this is what 'format' command do
> root at node3:/home/sae# collie vdi list
> name id size used shared creation time vdi id
> ------------------------------------------------------------------
>
>
> Here is my question: if one makes mistake rashly as mine, can he restore the
> vdis and how?
>
>
>
> Thanks a lot.
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> --
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> sheepdog at lists.wpkg.org
> http://lists.wpkg.org/mailman/listinfo/sheepdog
>
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