Hello,
I pushed on this with EMC for about a month before I gave up on that and
adjusted my perl script to look at the list of SSIDs and generate a
series of clone sets listing SSID's that either have their head or are
completely contained on a particular volume. Then I mount that volume
and clone that set of SSIDs then move on to the next subset of SSIDs.
Now, to clone four VT* tapes in parallel will require that you have four
real tape drives to clone to (as far as I know nsrclone/nsrstage will
NOT multiplex multiple clone/stage commands onto the same target tape)
and you are going to need to ensure that none of the SSIDs you are
cloning require the same VT* tape volumes (or you run the risk of
generating a deadlock).
Frank
On 1/20/09 10:51 AM, halomerchant wrote:
Hello, I'm having a terrible time trying to clone volumes from my VTL to
physical tape. I created a script to do the following:
mminfo -m -q 'savetime>=yesterday 10:00:00,savetime<=01:00:00 today' >
13hr_report
then:
awk '{print $1}' 14hr_report | grep VT* > vtlist8day
- which pulls out any barcodes with VT* written in the last 13hrs so as to only clone VT### tapes and not all tapes
then:
nsrclone -v -s cinatl01 -b vtlclone8day -f vtlist8day
- this clones all the VT## volumes from vtlist8day
The problem is that nsrclone will only clone 1 volume at a time, therefore, all
I/O is put on one drive, reading from 1 tape and writing to 1 tape
I've been reading up on cloning from SSIDs to get around this issue but cannot find anything that really helps.
I would like to clone at least 3 or 4 VT## volumes at once to physical tape.
Does anyone have recommendations or how to pull SSIDs writtent to VT## volumes
written in the last 13hrs and then clone those volumes in parallel?
Thank you.
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