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Re: [PATCH V2] migration: file URI
From: |
Steven Sistare |
Subject: |
Re: [PATCH V2] migration: file URI |
Date: |
Thu, 22 Jun 2023 08:28:36 -0400 |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 |
On 6/22/2023 6:12 AM, Daniel P. Berrangé wrote:
> On Wed, Jun 07, 2023 at 11:38:59AM -0700, Steve Sistare wrote:
>> Extend the migration URI to support file:<filename>. This can be used for
>> any migration scenario that does not require a reverse path. It can be used
>> as an alternative to 'exec:cat > file' in minimized containers that do not
>> contain /bin/sh, and it is easier to use than the fd:<fdname> URI. It can
>> be used in HMP commands, and as a qemu command-line parameter.
>>
>> Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
>
> In the cases where libvirt wants to save/restore QEMU migration state
> to a file, we also need to have libvirt header and XML document at the
> front of the file.
>
> IOW, if libvirt is to be able to use this new 'file:' protocol, then
> it neeeds to have the ability to specify an offset too. eg so libvirt
> can tell QEMU to start reading/writing at, for example, 4MB offset
> from the start.
>
> Should be fairly easy to add on top of this - just requires support
> for a URI parameter, and then a seek once the file is opened.
Will do, probably today - steve
- Re: [PATCH V2] migration: file URI, (continued)
- Re: [PATCH V2] migration: file URI, Peter Xu, 2023/06/12
- Re: [PATCH V2] migration: file URI, Fabiano Rosas, 2023/06/14
- Re: [PATCH V2] migration: file URI, Peter Xu, 2023/06/14
- Re: [PATCH V2] migration: file URI, Fabiano Rosas, 2023/06/14
- Re: [PATCH V2] migration: file URI, Peter Xu, 2023/06/14
- Re: [PATCH V2] migration: file URI, Fabiano Rosas, 2023/06/15
- Re: [PATCH V2] migration: file URI, Steven Sistare, 2023/06/20
- Re: [PATCH V2] migration: file URI, Peter Xu, 2023/06/20
- Re: [PATCH V2] migration: file URI, Daniel P . Berrangé, 2023/06/21
- Re: [PATCH V2] migration: file URI, Daniel P . Berrangé, 2023/06/22
- Re: [PATCH V2] migration: file URI,
Steven Sistare <=
- Re: [PATCH V2] migration: file URI, Fabiano Rosas, 2023/06/22