14 Feb
2013
14 Feb
'13
8:01 p.m.
Thanks!, disabling atime in a minute, the 240GB disks will wait a little more..
The 4KB sector can be changed after zpool creation?, I asume that goes for SLOG/L2ARC also, right?
No, the sector size (ashift) is fixed at the time when a new top-level virtual device (vdev) is created (zpool create, or zpool add), and can't be changed later. How to do that depends on the OS. With FreeBSD a gnop trick can be used if a disk lies about its physical sector size, with Illumos you edit sd.conf, don't know about Solaris. See: http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks
And make sure partitions (if using them) are 4kB aligned on AF disks (including SSD).
Mark