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Re: [libvirt] [PATCHv5 03/23] blockjob: add virsh blockpull --wait

On 04/17/2012 07:15 AM, Jiri Denemark wrote:
> On Mon, Apr 16, 2012 at 23:05:54 -0600, Eric Blake wrote:
>> I'm tired of shell-scripting to wait for completion of a block pull,
>> when virsh can be taught to do the same.  I couldn't quite reuse
>> vshWatchJob, as this is not a case of a long-running command where
>> a second thread must be used to probe job status (at least, not unless
>> I make virsh start doing blocking waits for an event to fire), but it
>> served as inspiration for my simpler single-threaded loop.  There is
>> up to a half-second delay between sending SIGINT and the job being
>> aborted, but I didn't think it worth the complexity of a second thread
>> and use of poll() just to minimize that delay.
>> * tools/virsh.c (cmdBlockPull): Add new options to wait for
>> completion.
>> (blockJobImpl): Add argument.
>> (cmdBlockJob): Adjust caller.
>> * tools/virsh.pod (blockjob): Document new mode.
>> ---
>> was independent patch previously
>> v5: address review comments, add an --async flag
>>  tools/virsh.c   |  120 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
>>  tools/virsh.pod |   14 +++++-
>>  2 files changed, 127 insertions(+), 7 deletions(-)
> Looks good and .5-second delay is a big issue. And if it is, we can improve
> the implementation in the future. ACK, this can be pushed independently as
> well.

I've pushed 1-3 now.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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