[sheepdog] [PATCH] dog/cluster: cluster-wide snapshot save or load specified vdi

[Liu Yuan]

On Thu, May 29, 2014 at 03:45:40PM +0800, Ruoyu wrote:
> 
> On 2014年05月29日 15:34, Liu Yuan wrote:
> >On Wed, May 28, 2014 at 08:43:02PM +0800, Ruoyu wrote:
> >>It is useful for users who want to backup or restore only part of
> >>all vdi from cluster-wide snapshot.
> >>
> >>Usage and example:
> >>
> >>1. save all vdi:
> >>    dog cluster snapshot save all /tmp/ss
> >>
> >>2. save some specified vdi:
> >>    dog cluster snapshot save test0_1_2 /tmp/ss test0 test1 test2
> >>
> >>3. load all vdi:
> >>    dog cluster snapshot load all /tmp/ss
> >>
> >>4. load some specified vdi:
> >>    dog cluster snapshot load all /tmp/ss test6 test0 test3
> >We already give a name test0_1_2 for a snapshot that contain test{0,1,2}, so I
> >think dog cluster snapshot snap_name would suffice.
> 'test0_1_2' is just a snapshot name, the format is
> dog cluster snapshot save <snap_name> <path> [vdi1] [vdi2] [vdi3] ...
> >
> >I'd suggest following command:
> >
> >dog cluster snapshot save snap_name /path # save all the vdi
> >dog cluster snapshot save snap_name /path vdi0:snap_name,vdi1:snap_name,... # partially save
> I think "vdi1 vdi2 vdi3 ..." is better because I have successfully
> created the VDIs named as ',', ':', '_', etc.
> 
> $ dog vdi create _ 4M
> $ dog vdi create : 4M
> $ dog vdi create , 4M
> $ dog vdi list
> Name Id Size Used Shared Creation time VDI id Copies Tag
> , 0 4.0 MB 0.0 MB 0.0 MB 2014-05-29 15:30 1884b 2
> : 0 4.0 MB 0.0 MB 0.0 MB 2014-05-29 15:30 1adad 2
> _ 0 4.0 MB 0.0 MB 0.0 MB 2014-05-29 15:30 2484e 2

Maek sense.

Thanks
Yuan