> -----Original Message----- > From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- > owner@xxxxxxxxxxxxxxx] On Behalf Of Leslie Rhorer > Sent: Saturday, May 14, 2011 9:44 AM > To: 'NeilBrown' > Cc: linux-raid@xxxxxxxxxxxxxxx > Subject: RE: Growing a RAID array > > > 10Meg devices with a 1Meg chunk size means just 10 stripes. > > > > To grow from 4 to 5 data disks it calculates that it needs to back up > the > > first 20 stripes (I think). It sees this is more than half the device > and > > gets confused and assumes something is wrong. > > > > Try with 4k chunks, or 100Meg devices. > > Silly machine. :-) > > 'Works like a champ, thanks. No errors, and the process completes > in the blink of an eye. Now if growing an array with 3T spindles were > only > that fast... Well, this is interesting. I was playing around a bit more, and I tried to start a resync. It failed: RAID-Server:/RAID# echo repair > /sys/block/md6/md/sync_action bash: echo: write error: Device or resource busy The device was unmounted at the time, so I mounted it and tried again. This time it worked. Is this normal behaviour? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
