Re: [Engine-devel] VM hibernation to storage domain

On 12/12/2011 02:10 PM, Yaniv Kaul wrote: > On 12/12/2011 21:04, Jon Choate wrote: >> On 12/12/2011 01:46 PM, Yaniv Kaul wrote: >>> On 12/12/2011 19:22, Jon Choate wrote: >>>> Is there any reason anyone can think of why we would need to >>>> specify a specific storage domain for a VM to use when it >>>> hibernates? Ideally we could just grab any storage domain that has >>>> space and use it for hibernation (as long a we remember where we >>>> did it!). >>>> >>>> thoughts? >>>> _______________________________________________ >>>> Engine-devel mailing list >>>> Engine-devel(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/engine-devel >>> >>> Probably for the same reason we enforce all VMs disks to be on the >>> same storage domain. Habit. >> Eliminating this dependency would be part of the feature to allow VMs >> to have their disks on multiple storage domains. >>> But I also think it make sense, for the hibernation file to be in >>> the same SD as the system disk. There's also a higher chance that >>> domain will be online and available to the host. >>> Y. >> Is it possible for ovirt-engine to identify which disk is the system >> disk? > > In several ways: > 1. Guess. > 2. The first > 3. Use the one with the 'Is Bootable' flag. Those all seem to have the possibility of getting the wrong disk. If the cost of getting the wrong disk is low anyway then I would argue that we don't need to find the system disk and we could hibernate alongside any disk.