On 06/03/2014 07:27 AM, Sijo Jose wrote: [please don't top-post on technical lists] > Martin, > Actually domain doesn't crash, but it state got changed to pause, till the > snapshot action got complete. > Its a time consuming process. Yes, the default internal snapshot is a time-consuming process, which is why we recommend external snapshots, which can be taken with very little guest downtime. > > so here is my requirement. > > I want to take snapshot of a Running Domain on every 3 hours,( at a later > point of time It should be possible to revert to the actual domain state > when I took the snapshot), I'm using libvirt APIs python bindings, > there are many flags defined, so which way I can accomplish it..? > as of now I"m using flag value as zero. You need to use flags to achieve what you want. In particular... > VIR_DOMAIN_SNAPSHOT_CREATE_LIVE = 256 > create the snapshot while the guest is running this flag is necessary, along with... >>> <domainsnapshot> >>> <name>snp1</name> >>> <creationTime></creationTime> >>> <description>Description</description> >>> <state></state> >>> <domain> >>> <uuid></uuid> >>> </domain> >>> <parent> >>> <name></name> >>> </parent> >>> >>> </domainsnapshot> additional changes to this XML to specifically request an external snapshot by listing the pathname at which the external memory snapshot will live. See how 'virsh snapshot-create-as $dom --print-xml --live --memspec /path/to/file' does it. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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