[sheepdog-users] [sheepdog] Testing cluster snapshot

[Valerio Pachera]

The empty cluster snapshot is a problem itself, but it's not related.

This are the steps to reproduce the problem:

dog node list
  Id   Host:Port         V-Nodes       Zone
   0   192.168.10.4:7000        126   67807424
   1   192.168.10.5:7000        129   84584640
   2   192.168.10.6:7000        129  101361856
   3   192.168.10.7:7000        129  118139072

qemu-img convert -f qcow2 test.qcow2 sheepdog:test

qemu-img convert -f qcow2 /root/test.qcow2 sheepdog:test
qemu-img convert -f qcow2 /root/test.qcow2 sheepdog:test2

dog vdi snapshot test
dog vdi snapshot test2

dog cluster snapshot save first cluster_snapshots
100.0 % [===] 434 / 434

dog vdi delete -s 1 test
dog vdi delete -s 1 test2

(turned on guest 'test' and wrote 100M of data, turned off the guest)

dog vdi snapshot test
dog vdi snapshot test2

dog cluster snapshot save second cluster_snapshots
100.0 % [===] 460 / 460

dog vdi delete -s 2 test
dog vdi delete -s 2 test2

(turned on guest 'test' and wrote 100M of data, turned off the guest)

dog vdi snapshot test
dog vdi snapshot test2

dog cluster snapshot save third cluster_snapshots
100.0 % [===] 484 / 484

(It's not necessary to format the cluster but I do it to simulate a new
cluster)
dog cluster format -c 2
    __
   ()'`;
   /\|`
  /  |   Caution! The cluster is not empty.
(/_)_|_  Are you sure you want to continue? [yes/no]: yes
using backend plain store

dog cluster snapshot list cluster_snapshots
Index Tag   Snapshot Time
1     first Tue Sep  9 11:50:42 2014
2     secondTue Sep  9 11:58:01 2014
3     third Tue Sep  9 12:00:31 2014

*(Notice I import 1 vdi of 2, and it prints the error)*
dog cluster snapshot load third cluster_snapshots test
using backend plain store
100.0 % [===] 263 / 263

dog vdi list
  Name        Id    Size    Used  Shared    Creation time   VDI id  Copies
Tag
Failed to read object 807c2b2500000000 No object found
Failed to read inode header
Failed to read object 807c2b2600000000 No object found
Failed to read inode header
s test         3  5.0 GB  168 MB  880 MB 2014-09-09 11:57   7c2b27      2
  test         0  5.0 GB  0.0 MB  1.0 GB 2014-09-09 12:02   7c2b28      2

*(Now I import the whole snaphost: 2 vdi, and it doesn't print the error)*
dog cluster snapshot load third cluster_snapshots
    __
   ()'`;
   /\|`
  /  |   Caution! The cluster is not empty.
(/_)_|_  Are you sure you want to continue? [yes/no]: yes
using backend plain store
100.0 % [===] 484 / 484

dog vdi list
  Name        Id    Size    Used  Shared    Creation time   VDI id  Copies
Tag
s test         3  5.0 GB  168 MB  880 MB 2014-09-09 11:57   7c2b27      2
  test         0  5.0 GB  0.0 MB  1.0 GB 2014-09-09 12:06   7c2b28      2
s test2        3  5.0 GB  0.0 MB  864 MB 2014-09-09 11:57   fd3817      2
  test2        0  5.0 GB  0.0 MB  864 MB 2014-09-09 12:06   fd3818      2

*Last: I never used vdi 'test2' but I've been taking and removing snapshot
every time.*

Sheepdog daemon version 0.8.0_331_gecc533e
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