Re: [libvirt-users] Pivot without copy
On 05/19/2015 03:29 PM, Mathew Moon wrote:
Hi,
Sorry about top-posting, didn't know it was a nuisance. As for
It's okay - we were all new once.
developing,
I wish I could but I have never spent any time coding in c, c++, etc. I
am a systems guy, not a developer, so I only work with scripting languages.
I would love to have the tech chops to contribute though. If I have a
chance I will look through the relevant code and see if there is anything
that I can do, but I suspect it will be a bit over my head.
That's okay. Even offering to test patches when they are eventually
written is useful.
I will definitely check out doing snapshot-revert with internal
snapshots and hot plugging. With hot plugging I assume you mean to create a
storage volume, put it in as a virtual 'cd drive' and mount it that way. Is
that correct?
Not quite a virtual 'cd drive', but an actual IDE, SCSI, or USB drive,
at least as far as the emulation presents it from the guest's point of
view. The commands 'virsh attach-disk' and 'virsh detach-disk' are the
hot-[un]plug wrappers, which basically behave the same as bare metal
system adding or removing a disk from the hardware bus while the guest
is running (not all hardware handles it gracefully, but there are
definitely storage arrays out there that manage just fine).
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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