When does my dedup store start to prune unused blocks?
Hello,
When a dedup-store is sealed (Happens automacitly when a DDB is not shutdown in a propper way)
It will keep all data until the last block is expired.
So, if you have 100TB of data in that first dedup-store, it will wait to prune all the 100TB until the last
byte is expired.
This is by design and its not relly any workaround for this.
If you are really really low on space you can expire data(delete jobs) before they expire and run a
Data Aging jobb manually.
There is a few sql-queries you can ask to see how many stores are affected.
If you know what you are doing or if the supportguys tell you to do this, you can do like this:
SELECT [SIDBStoreId]
,[SIDBStoreName]
,[SIDBStoreAliasName]
,[Status]
,[LastAccessTime]
,[CreatedTime]
,[SealedTime]
,[SealedReason]
FROM [commserv].[dbo].[IdxSIDBStore] where Status=1;
(or SELECT * FROM [CommServ].[dbo].[IdxSIDBStore] where status=1; )
This will give you an output on any sidb(DDB) that is corrupted.
There is another query that will tell you what jobs that are affected by your damaged SIDB's.
Write down your SIDBStoreId of the damaged/corrupted SIDB's and use the following query to see what jobs are affected.
SELECT * FROM [CommServ].[dbo].[archJobsOnStoreInfo] where storeid=
All these jobs are affected by your corrupted SIDB and they need to expire in order for your data to be released.
I will not go in to detail on why, but its the sad true.
Regards
Tobias
On Mon, Nov 21, 2011 at 06:35:15AM -0700, Ben Knorr wrote:
A few weeks ago, we suffered a power failure at our 2nd media agent,
which hosts our dedup database (DDB). Unfortunately, at that time we
weren't getting backups of the DB and after the power was restored, our
DDB started a 2nd copy and started creating a new baseline with all the
backups that were restarting.
Fast forward a few weeks, I can't figure out why we're not getting all
of what I believe is used space in the old baseline back. I've pruned
some jobs (delete jobs in the primary storage policy copy), changed
aging days slightly, and aux-copied other jobs to another storage
policy copy and another media agent. Every few days, I see some GB free
up on the disk, but unfortunately that hasn't happened all weekend yet.
I've copied/deleted about 2TB of unique data out in the last three
days, and now I'm down to about 1TB of unique data and nothing else. I
expected to chip away TB as I copied/deleted jobs, but it hasn't really
happened like that.
I've looked through all the checkboxes and settings in the Media
Management screens, but I can't seem to find anything that is exactly
what I want.
Can anyone shed some light on this? I'm on DDB2 with a new baseline
now, but my magnetic disk that I am backing up to is more full than it
should be with just the new baseline. When do I get the space that the
old unused block data is consuming?
-ben
References
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3.
http://groups.yahoo.com/group/commvault/post;_ylc=X3oDMTJwdWEwNzd2BF9TAzk3MzU5NzE0BGdycElkAzc0NTA4NTEEZ3Jwc3BJZAMxNzA3Mjc3NTIwBG1zZ0lkAzUzNzMEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxMzIxODgyNTI2?act=reply&messageNum=5373
4.
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6.
http://groups.yahoo.com/group/commvault/members;_ylc=X3oDMTJmOW1sc29sBF9TAzk3MzU5NzE0BGdycElkAzc0NTA4NTEEZ3Jwc3BJZAMxNzA3Mjc3NTIwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzEzMjE4ODI1MjY-?o=6
7.
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8.
http://documentation.commvault.com/
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