Dryice Liu’s Blog

grow fs

before I started:
root@mybox:data# fdisk -s /dev/da0
/dev/da0: 91517 cyl 255 hd 63 sec
Part Start Size Type Flags
1: 63 980141652 0xa5 0×80
root@mybox:data# disklabel -A /dev/da0s1
# /dev/da0s1:
type: unknown
disk: amnesiac
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 61010
sectors/unit: 980141652
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track […]

¶ Posted 30 October 2005 § freebsd ‡ Comments (0)

my growfs test

root@mybox:data# fdisk -s /dev/da0 /dev/da0: 61011 cyl 255 hd 63 sec Part Start Size Type Flags
1: 63 980141652 0xa5 0×80
root@mybox:data# disklabel -A /dev/da0s1 # /dev/da0s1: type: unknown disk: amnesiac label: […]

¶ Posted 29 October 2005 § freebsd ‡ Comments (0)

write cache turns a lot

on the system disk, if I turn the write cache off (sysctl hw.ata.wc, by setting in /boot/loader.conf). the dd command will take 77.78 seconds, well when turning it on (the default), it will take only 10.93 seconds.