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virDomainSetBlockThreshold: Mention that the event can be registered for <mirror>

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The infrastructure supports setting the threshold also for the <mirror>.
Mention it in the docs.

https://bugzilla.redhat.com/show_bug.cgi?id=1807741

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Peter Krempa 2020-07-15 13:09:32 +02:00
parent 5c52c186fd
commit 52b90e31c6
1 changed files with 3 additions and 0 deletions
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src/libvirt-domain.c
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@ -12381,6 +12381,9 @@ int virDomainGetGuestInfo(virDomainPtr domain,
* live VM XML for 'backingStore' or 'source' elements of a disk. If index is
* given the threshold is set for the corresponding image.
*
* Note that the threshold event can be registered also for destinations of a
* 'virDomainBlockCopy' destination by using the 'index' of the 'mirror' source.
*
* Hypervisors report the last written sector of an image in the bulk stats API
* (virConnectGetAllDomainStats/virDomainListGetStats) as
* "block.<num>.allocation" in the VIR_DOMAIN_STATS_BLOCK group. The current