12-07-2010 09:45 PM
Hello,
we have several servers doing backups with "Blocklevel incremental" using mapped full vm as backup method. All works fine, but one server has a problem since the last full backup last weekend.
The last two incremental backups wrote exactly as much data as the full backup to tape. It should normally not be more than 10 % of the full backup data.
If is open the "Backup, Archive and Restore" window i can see that on file level it is only a incremental backup. There are only changed files visible so this is normal. But why is the backup data on tape as much as a full backup? Also the backup time is as long as a full backup. Last week everything works fine.
Best regards
Sven
12-07-2010 10:10 PM
Hi,
Is this vm in a policy by itself, did you change anything on that policy, any settings, renamed it?
If you change settings on a policy it basically becomes new, so if an incremental is scheduled to run, it will actually do a full.
Or did you maybe do any changes to the permissions on that client? The account used to access vCenter needs the role/rights as described in this note (which you probably have, since the rest are working)
http://www.symantec.com/business/support/index?page=content&id=TECH129738
12-08-2010 02:11 AM
Hello,
no, i didn't changed anything. The policy was untouched and the client also.
Best regards
Sven
12-08-2010 03:19 AM
I am not sure this is the reason, but did some one turn off change block tracking ?. It seems you need to turn it on a disk per disk.
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1020128
12-08-2010 10:53 AM
12-09-2010 06:42 AM
Thanks for posting the root cause - Very usefull pice of information. I will bring it to my VMware admin to make sure they know.
best regards
Nicolai