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Posted to issues@cloudstack.apache.org by "Sanjeev N (JIRA)" <ji...@apache.org> on 2013/07/31 14:43:50 UTC
[jira] [Created] (CLOUDSTACK-3979) [Object_Store_Refactor] setting
snapshot.delta.max is not honoured in creating delta snapshots.
Sanjeev N created CLOUDSTACK-3979:
-------------------------------------
Summary: [Object_Store_Refactor] setting snapshot.delta.max is not honoured in creating delta snapshots.
Key: CLOUDSTACK-3979
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3979
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Components: Snapshot, Storage Controller
Affects Versions: 4.2.0
Environment: Latest build from ACS 4.2 branch
Cluster: Xen
Reporter: Sanjeev N
Priority: Critical
Fix For: 4.2.0
setting snapshot.delta.max is not honoured in creating delta snapshots.
Steps to Reproduce:
================
Bring up CS with atleast one xen cluster using NFS as the storage for both primary and secondary
1.Set the Snapshot.delta.max as 3
2.Restart the Management Server
3.Deploy a VM from the default Linux Template
4.Log into the VM and create a file on the ROOT disk with content in it.
5.Create a Snapshot of the ROOT disk.
6.Repeat Steps 4 and 5 at least six times
Expected Result:
=============
Step 6 should generate at least two 'chains' of Snapshots on the Secondary Storage.
Since snapshot.delta.max is set to 3, creating 4th snapshot should be a full snapshot
Actual Result:
============
Only one chain of snpashots got created in the secondary storage. All the snapshots are child snpshosts of its previous snapshots except the first one.
Observations:
===========
Output of vhd-util scan -p *.vhd on the SSVM:
root@s-7-VM:/mnt/SecStorage/1f24310b-8f0b-3563-aecc-779179564245/snapshots/2/33# pwd
/mnt/SecStorage/1f24310b-8f0b-3563-aecc-779179564245/snapshots/2/33
root@s-7-VM:/mnt/SecStorage/1f24310b-8f0b-3563-aecc-779179564245/snapshots/2/33# vhd-util scan -p *.vhd
vhd=674d1772-373f-4a24-9877-3a940e1f9ccb.vhd capacity=21474836480 size=1765089792 hidden=0 parent=none
vhd=62b6787d-29b5-445a-acc2-1cd95c2b8326.vhd capacity=21474836480 size=42070528 hidden=0 parent=674d1772-373f-4a24-9877-3a940e1f9ccb.vhd
vhd=2dd66734-63f9-4467-b936-240e58085e27.vhd capacity=21474836480 size=23159296 hidden=0 parent=62b6787d-29b5-445a-acc2-1cd95c2b8326.vhd
vhd=91af0878-0914-4ab7-bf4d-fdce1bdb6667.vhd capacity=21474836480 size=27361792 hidden=0 parent=2dd66734-63f9-4467-b936-240e58085e27.vhd
vhd=3bd0a406-63bc-4577-bd11-a4f062fae4aa.vhd capacity=21474836480 size=31564288 hidden=0 parent=91af0878-0914-4ab7-bf4d-fdce1bdb6667.vhd
snapshots list from cloud db:
mysql> select * from snapshots where volume_id=33;
+----+----------------+------------+-----------+-----------+------------------+----------+------+---------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
| id | data_center_id | account_id | domain_id | volume_id | disk_offering_id | status | path | name | uuid | snapshot_type | type_description | size | created | removed | backup_snap_id | swift_id | sechost_id | prev_snap_id | hypervisor_type | version | s3_id |
+----+----------------+------------+-----------+-----------+------------------+----------+------+---------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
| 59 | 2 | 2 | 1 | 33 | 1 | BackedUp | NULL | max-snap_ROOT-21_20130731122032 | eac75af7-e252-4ac2-b414-dd07fedc500e | 0 | MANUAL | 21474836480 | 2013-07-31 12:20:32 | NULL | NULL | NULL | NULL | NULL | XenServer | 2.2 | NULL |
| 60 | 2 | 2 | 1 | 33 | 1 | BackedUp | NULL | max-snap_ROOT-21_20130731122343 | 44a605c3-a3b0-4a56-b8fc-277ae91f93da | 0 | MANUAL | 21474836480 | 2013-07-31 12:23:43 | NULL | NULL | NULL | NULL | NULL | XenServer | 2.2 | NULL |
| 61 | 2 | 2 | 1 | 33 | 1 | BackedUp | NULL | max-snap_ROOT-21_20130731122558 | ec7035d6-bd9e-4457-b3f0-0c8767fed837 | 0 | MANUAL | 21474836480 | 2013-07-31 12:25:58 | NULL | NULL | NULL | NULL | NULL | XenServer | 2.2 | NULL |
| 62 | 2 | 2 | 1 | 33 | 1 | BackedUp | NULL | max-snap_ROOT-21_20130731122753 | be8ca602-800a-415b-92ca-d9d45b333ab4 | 0 | MANUAL | 21474836480 | 2013-07-31 12:27:53 | NULL | NULL | NULL | NULL | NULL | XenServer | 2.2 | NULL |
| 63 | 2 | 2 | 1 | 33 | 1 | BackedUp | NULL | max-snap_ROOT-21_20130731122911 | 25f547f3-c8f5-4d61-b208-97a082e57667 | 0 | MANUAL | 21474836480 | 2013-07-31 12:29:11 | NULL | NULL | NULL | NULL | NULL | XenServer | 2.2 | NULL |
+----+----------------+------------+-----------+-----------+------------------+----------+------+---------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
5 rows in set (0.00 sec)
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