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Re: [Qemu-devel] [PATCH v3 0/6]: block: Add I/O status support
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v3 0/6]: block: Add I/O status support |
Date: |
Mon, 10 Oct 2011 19:30:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2 |
Am 26.09.2011 22:43, schrieb Luiz Capitulino:
> This series adds support to the block layer to keep track of devices'
> I/O status. That information is also made available in QMP and HMP.
>
> The goal here is to allow management applications that miss the
> BLOCK_IO_ERROR event to able to query the VM to determine if any device has
> caused the VM to stop and which device caused it.
>
> Here's an HMP example:
>
> (qemu) info status
> VM status: paused (io-error)
> (qemu) info block
> ide0-hd0: removable=0 io-status=ok file=disks/test2.img ro=0 drv=qcow2
> encrypted=0
> ide0-hd1: removable=0 io-status=nospace file=/dev/vg_doriath/kvmtest ro=0
> drv=qcow2 encrypted=0
> ide1-cd0: removable=1 locked=0 io-status=ok [not inserted]
> floppy0: removable=1 locked=0 [not inserted]
> sd0: removable=1 locked=0 [not inserted]
>
> The session above shows that the VM is stopped due to an I/O error. By using
> the info block command it's possible to determine that the 'ide0-hd1' device
> caused the error, which turns out to be due to no space.
Thanks, applied all to the block branch.
Kevin
- Re: [Qemu-devel] [PATCH v3 0/6]: block: Add I/O status support,
Kevin Wolf <=