-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Dave Barr (??)
What ONTAP version?
There's been dramatic improvements in the deswizzler in 7.2. Also, do you snapmirror this volume regularly? One issue is that I think during early deswizzler phases at least is that snapmirror updates cause even the source volume's deswizzler to restart. (checkpointing of the destination deswizzler was fixed in 7.2.4, but not the source). You may want to suspend snapmirror updates until it finishes, or at least progresses to the next 'pass' (1/normal, 2/normal, 3/normal, then 0/inofile through 3/inofile). Use 'priv set advanced; wafl scan status' and note the scanid. If the scanid changes after a snapmirror update, you'll know that it's restarting. The scanner is supposed to run faster and catch up if it does restart, but I haven't found this to be much the case in practice.
You can raise the wafl scan speed to supposedly make the scanner go faster, but in my experience it never had much of an effect.
AFAIK, there is no need to adjust wafl scan speed since 7.2.somewhat as the Filer does adjust the speed itself. Correct me if i am wrong.
Regards
Jochen