On 2013/07/27 7:09 AM, Fletcher Cocquyt wrote:
"snapmirrors would have been running during this time (3 minute intervals to a DR site)"
how many snapmirrors are you running at 3 minute intervals ? Those can a lot of IO and CPs
A while ago we discovered our snapmirrors were accounting for 50% of our IOPs (tuning the schedule fixed that):
15 snapmirrors - most are actually on 5 minute interval, the higher priority ones are on 3 minute. I will investigate if they can/should be tuned
I started the dedup on a different volume (250 Gb, 100Gb used, similar usage pattern), and it is running fine - it has so far scanned 50GB in 1 hour.
A reallocate measure on the problematic volume reports a value of 6, so it should probably be reallocated. I will increase the size of the volume, run a reallocate and try the dedup again later on.
Thanks Chris