[Sheepdog] cloning image fails

Piavlo piavka at cs.bgu.ac.il
Thu Jan 7 23:09:41 CET 2010


 Hi,

Snapshot works but cloning fails with current master branch:

fire-srv4 ~ # qemu-img snapshot -c name sheepdog:zopa1
sd_claim 1492: zopa1
sd_release 1533: zopa1
sd_close 1478: zopa1
fire-srv4 ~ # qemu-img create -b sheepdog:zopa1 -f sheepdog zopa2
sd_close 1478: zopa2
Formatting 'zopa2', fmt=sheepdog size=5368709120 backing_file='zopa2'
qemu-img: Error while formatting
fire-srv4 ~ #  shepherd info -t vdi
   40000 : zopa1  5120 MB (allocated: 4068 MB, shared: 0 MB), 2010-01-07
23:14:25, tag:        0, not current
   80000 : zopa1  5120 MB (allocated: 0 MB, shared: 4068 MB), 2010-01-07
23:30:01, tag: 4b465259, current
fire-srv4 ~ #                                      

Also I am able to boot the snapshot VM and login into it, but i gets
stuck after a short time as well as all shepherd
commands on all nodes. After killing the VM and restarting all the
sheepdogs - they can communicate again with each other
and see all the previously  existing images correctly.

 Is it possible to boot concurrently both the image and it's snapshot?
and in which mode ie. read/write?
Same question for an image and it's clone.

Alex




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