parallel restore
Updated: 13 Jan 2012 | 6 comments
This issue has been solved. See solution.
How to:-
Take full backup of 4 files
Initiate 4 parallel restore tasks - one for each file.
I have 4 files . I took backup from NBU via linux machine (RHEL 5.4). Now i want to restore these file via parallel restore in such a way that for 4 files i initiate 4 parallel restore operation, one for each file.
file1 -----> restore1
file2 -----> restore2
file3 -----> restore3
file4 -----> restore4
How can i ensure this operation that each parallel restore operation is restoring its respective file.
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Why?
Not clear on what you are hoping to achieve or prove...
Are they backed up to the same tape? 4 concurrent restores off the same tape will not be possible!
Regards Andy
"It's not too late to panic ..."
If they are mutiplexed on a
If they are mutiplexed on a single tape you can do a multiplexed restore.
On the Master Server host properties there is a time to wait for multiplexed restores
Set this to a high value (20 minutes?) to give you enough time to start all 4 restores.
These will go into activity monitor and queue for 20 minutes and then all start to run together
Other than that i have to ask the same question as Andy - WHY?
Authorised Symantec Consultant
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Concurrent multiplexed restores, who'd've thought it! :D
Wouldn't have expected a requirement for it let alone the ability to do it, but then I s'pose you're often blinkered by what you need to do in your own environment....
***EDIT***
Just had to look it up!
Master Server Properties -> General Server tab. Delay on multiplexed restores nn seconds:
The Delay on multiplexed restores property applies to multiplexed restores. It specifies how long the server waits for additional restore requests of multiplexed images on the same tape. All of the restore requests are received within the delay period are included in the same restore operation (one pass of the tape). Default: delay of 30 seconds.
Regards Andy
"It's not too late to panic ..."
Solution
"bprestore lets users restore a backed up or archived file or list of files. You can
also name directories to restore. If you include a directory name, bprestore
restores all files and subdirectories of that directory. You can exclude a file or a
directory path that was previously included in the restore by placing an
exclamation mark (!) in front of the file or the directory path (does not apply to
NDMP restores). For example, the exclude capability is useful if you want to exclude
part of a directory from the restore."
Use below command.
/usr/openv/netbackup/bin/bprestore -B -p POLICY -f file_path
That is why everybody asked
That is why everybody asked 'why parallel restore?' It can all be done in 'one go' - as you have discovered!
Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows.
Handy NBU links
& how exactly does that allow you to
"initiate 4 parallel restore operation, one for each file"
Surely that's just running a plain vanilla restore, nothing special about it?
Regards Andy
"It's not too late to panic ..."
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