On Sat, 17 Jul 2010 16:15:55 -0500 "Leslie Rhorer" <lrhorer@xxxxxxxxxxx> wrote: > > I'm thinking about changing the chunk size on one of my arrays in > order to potentially improve performance. The man page rather suggests -c > is a vlaid option under Grow mode, although it doesn't specifically say > mdadm supports it under --grow. Is it indeed supported under mdadm 2.6.7.2 > and kernel 2.6.26-2? Assuming so, I would like to know a bit more about the > change before issuing the command. Speficialy, what are the details of the > process? Does the entire (RAID 6) array have to be re-written, such as is > the case with adding a drive to the array? Does the recovery start > immediately? Can it be interrupted and then continue at a later time? Out of curiosity, which chunk size do you have, and which you want to change it to, and do you expect the new size to be faster based on any tests? -- With respect, Roman
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