By the way - an interesting option could be to use FlexClone instead of breaking the mirror - you clone the mirrored volume, and then you change its minra setting.
By the way - if you're not using very large aggregates on the R200 that might your ultimate cure - you wanna have many disks involved in the I/O.
Eyal.
On 9/1/06, Peter D. Gray pdg@uow.edu.au wrote:
On Fri, Sep 01, 2006 at 08:47:01AM -0500, Callaway, Michael wrote:
Quote: "My NDMP tape backups from the R200 are pretty slow. I average about 2 MBytes per sec. Note that backups of other volumes on the R200 work really well, so there is no problem on the R200 or the network."
Your 2MB/sec sampling, when was that taken? Was it at the beginning, middle, end of the backup? You -should- be getting a really slow through-put rate at the start of a backup, since ndmp basically walks through and takes a look at each file before actually backing them up. When you have a large volume it will take a while to look at each file, it's worse with volumes that have a large number of small files.
Good thought, but no.
The backup is slow after the metadata dump is finished.
Peak is slow as well (5 Meg or so).
Regards, pdg
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Eyal Traitel