Hi,
We have a very simple solution to install FreeBSD using RAID1. Can you
put this solution in Handbook? (My english is poor)
The simplicity is base on another a little FreeBSD instaled on other HD,
in our case we are using a boot from network for diskless.
After installed all system on frist HD (ex.: /dev/ad4), partitioned how
you like, we can boot from a little (temporary) FreeBSD system installed
on /dev/ad0 (in our case we are booting from network).
Using this little system we can create a mirror device, using
information from main HD, /dev/ad4:
gmirror label -vnb round-robin gm0 /dev/ad4
gmirror load
Now, we can add a second HD for this mirror (same size), in this case
/dev/ad6, all partitions will be mirroed and you don't have to use dump
and restore, which is hard work for several partiotions and labels:
gmirror configure -a gm0
gmirror insert gm0 /dev/ad6
Now, this mirror is running and we can edit the main fstab and to
configure this system to work correctly:
mount /dev/mirror/gm0s1a /mnt
echo 'geom_mirror_load="YES"' >> /mnt/boot/loader.conf
vi /mnt/etc/fstab (change /dev/ad4 to /dev/mirror/gm0 in all lines)
Now we can boot normaly in main system /dev/ad4 and using mirror system,
in our case:
$ df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/mirror/gm0s1a 243M 60M 163M 27% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/mirror/gm0s3h 134G 682K 124G 0% /home
/dev/mirror/gm0s2d 248M 12K 228M 0% /tmp
/dev/mirror/gm0s2f 2.9G 1.8G 929M 66% /usr
/dev/mirror/gm0s2g 2.2G 108M 1.9G 5% /usr/local
/dev/mirror/gm0s2e 496M 194K 456M 0% /var
/dev/mirror/gm0s3f 496M 4.0K 456M 0% /var/amavis
/dev/mirror/gm0s3g 496M 1.6M 454M 0% /var/db
/dev/mirror/gm0s3d 496M 1.8M 454M 0% /var/qmail
/dev/mirror/gm0s3e 496M 4.0K 456M 0% /var/virusmails
and
$ gmirror list
Geom name: gm0
State: DEGRADED
Components: 2
Balance: round-robin
Slice: 4096
Flags: NONE
GenID: 0
SyncID: 1
ID: 4081910748
Providers:
1. Name: mirror/gm0
Mediasize: 160041885184 (149G)
Sectorsize: 512
Mode: r12w11e14
Consumers:
1. Name: ad4
Mediasize: 160041885696 (149G)
Sectorsize: 512
Mode: r1w1e1
State: ACTIVE
Priority: 0
Flags: DIRTY
GenID: 0
SyncID: 1
ID: 1418281406
2. Name: ad6
Mediasize: 160041885696 (149G)
Sectorsize: 512
Mode: r1w1e1
State: SYNCHRONIZING
Priority: 0
Flags: DIRTY, SYNCHRONIZING
GenID: 0
SyncID: 1
Synchronized: 59%
ID: 307131166
This system is synchronizing yet.
Paulo Fragoso.
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