gmirror¶

gmirror intro¶

What is gmirror?

gmirror is an easy freebsd tool for building and managing raid1 disks arrays.

In this example, we are adding two extra disks to an existing FreeBSD9 system.

Initialize the raid array

gmirror label -v -b round-robin gm1 /dev/ada0
gmirror configure -a gm1
gmirror insert gm1 /dev/ada1

Verify the output of gmirror status

Name    Status  Components
mirror/gm0  COMPLETE  ada2 (ACTIVE)
ada3 (ACTIVE)
mirror/gm1  DEGRADED  ada0 (ACTIVE)
ada1 (SYNCHRONIZING, 0%)

Add a new fs

bsdlabel -B -w /dev/mirror/gm1 auto
newfs /dev/mirror/gm1a
mount /dev/mirror/gm1a /mnt/tmp
df -h

gmirror man page : gmirror(8) .

FreeBSD Hanbook : RAID1 - Mirroring .

Feedback and comments are welcome on this page .