Mailing List Archive: Xen: API

xe export cause xe command no response

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yunshandev at gmail

Jul 15, 2012, 6:56 PM

Post #1 of 3 (325 views)
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xe export cause xe command no response

Hi all,

I met one issue that when using "xe export" command to export the image to NFS disk, if we interrupt the process abnormally, shell will have no response to any xe command.

The steps to reproduce this issue are like following:
1. xe vm-export vm=$uuid_snapshot filename=$dir_xva/$name_xva.xva ($dir_xva is a NFS disk)
2. For some reason, $dir_xva does not have enough space to store this image, so I use Ctrl+C to stop xe export process.
3. Then when typing any xe command, shell does not have any response.

Has anybody met this problem before? Reboot the XCP host can fix the problem, but this will interrupt all working state of existing VMs.

Thanks,
Tianpeng

george.shuklin at gmail

Jul 15, 2012, 10:53 PM

Post #2 of 3 (297 views)
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Re: xe export cause xe command no response [In reply to]

Ad hoc solution: you can do 'xe-toolstack-restart' to restart xapi.

But to be honesty, XCP/XenServer do have horrible control over any IO
operations. If something is going wrong, you can or reboot everything,
hoping this helps, or dig inside SM internals.

On 16.07.2012 05:56, Tianpeng Zhang wrote:
> Hi all,
> I met one issue that when using "xe export" command to export the
> image to NFS disk, if we interrupt the process abnormally, shell will
> have no response to any xe command.
> The steps to reproduce this issue are like following:
> 1. xe vm-export vm=$uuid_snapshot filename=$dir_xva/$name_xva.xva
> ($dir_xva is a NFS disk)
> 2. For some reason, $dir_xva does not have enough space to store this
> image, so I use Ctrl+C to stop xe export process.
> 3. Then when typing any xe command, shell does not have any response.
> Has anybody met this problem before? Reboot the XCP host can fix the
> problem, but this will interrupt all working state of existing VMs.
> Thanks,
> Tianpeng
>
>
> _______________________________________________
> Xen-api mailing list
> Xen-api [at] lists
> http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api

yunshandev at gmail

Jul 15, 2012, 11:02 PM

Post #3 of 3 (298 views)
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Re: xe export cause xe command no response [In reply to]

Thanks George!

Will have a try next time when it happens.

Tianpeng

From: George Shuklin
Date: 2012-07-16 13:53
To: xen-api
Subject: Re: [Xen-API] xe export cause xe command no response
Ad hoc solution: you can do 'xe-toolstack-restart' to restart xapi.

But to be honesty, XCP/XenServer do have horrible control over any IO operations. If something is going wrong, you can or reboot everything, hoping this helps, or dig inside SM internals.

On 16.07.2012 05:56, Tianpeng Zhang wrote:

Hi all,

I met one issue that when using "xe export" command to export the image to NFS disk, if we interrupt the process abnormally, shell will have no response to any xe command.

The steps to reproduce this issue are like following:
1. xe vm-export vm=$uuid_snapshot filename=$dir_xva/$name_xva.xva ($dir_xva is a NFS disk)
2. For some reason, $dir_xva does not have enough space to store this image, so I use Ctrl+C to stop xe export process.
3. Then when typing any xe command, shell does not have any response.

Has anybody met this problem before? Reboot the XCP host can fix the problem, but this will interrupt all working state of existing VMs.

Thanks,
Tianpeng

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