Am Sonntag, 27. Februar 2005 03:54 schrieb Stephen Kelly:
Hi All,
I'm having a problem trying to set up disk mirroring of two 80G Western
Digital IDE drives. I'm using the instructions at
http://people.freebsd.org/~rse/mirror/
I've included these instructions at the end of this e-mail.
When I reboot the system for the first time as instructed, it starts to
boot but then just starts printing the following messages to the screen:
init: can't exec getty `usr/libexec/getty` for port ttyv1:
No such file or directory
init: can't exec getty `usr/libexec/getty` for port ttyv2:
No such file or directory
init: can't exec getty `usr/libexec/getty` for port ttyv3:
No such file or directory
init: can't exec getty `usr/libexec/getty` for port ttyv4:
No such file or directory
.
.
.
Something at the dump/restore stage went wrong or your /etc/fstab is wrong.
Delete /boot.congig an boot from the initial disk, btw. is your second drive
really on primary slave? That's why I hate how-tos, people just type it word
by word without knowing what they do.
If your disk ist secondary master, it's not ad1 but ad2, in GENERIC ata is
compiled with ATA_STATIC_ID.
Forget the howto and read the man pages, it's the shorter way if the howto
doesn't work for you.
Best regards,
-Harry
Can anyone tell me where I'm going wrong/what is happening?
Thanks so much,
Stephen
The instructions:
# make sure the second disk is treated as a really fresh one
# (not really necessary, but makes procedure more deterministically ;-)
dd if=/dev/zero of=/dev/ad1 bs=512 count=79
# place a GEOM mirror label onto second disk
# (actually on the last block of the disk)
gmirror label -v -n -b round-robin gm0 /dev/ad1
# activate GEOM mirror kernel layer
# (makes the /dev/mirror/gm0 device available)
gmirror load
# place a PC MBR onto the second disk
# (with a single FreeBSD slice /dev/mirror/gm0s1 covering the whole disk)
fdisk -v -B -I /dev/mirror/gm0
# place a BSD disklabel onto /dev/mirror/gm0s1
# (ATTENTION: in FreeBSD 5-STABLE before 14-Jan-2005 the
# /dev/mirror/gm0s1 device has to be specified as just mirror/gm0s1 or
# the bsdlabel(8) will use the incorrect GEOM name gm0s1 instead!)
# (NOTICE: figure out what partitions you want with bsdlabel /dev/ad0
before) # (NOTICE: start a partition at offset 16, c partition at
offset 0) bsdlabel -w -B /dev/mirror/gm0s1 # initialize
bsdlabel -e /dev/mirror/gm0s1# create custom partitions
# manually copy filesystem data from first to to second disk
# (same procedure for partitions g, etc)
newfs -U /dev/mirror/gm0s1a
mount /dev/mirror/gm0s1a /mnt
dump -L -0 -f- / | (cd /mnt; restore -r -v -f-)
newfs -U /dev/mirror/gm0s1d
mount /dev/mirror/gm0s1d /mnt/var
dump -L -0 -f- /var | (cd /mnt/var; restore -r -v -f-)
newfs -U /dev/mirror/gm0s1e
mount /dev/mirror/gm0s1e /mnt/usr
dump -L -0 -f- /usr | (cd /mnt/usr; restore -r -v -f-)
# adjust new system configuration for GEOM mirror based setup
cp -p /mnt/etc/fstab /mnt/etc/fstab.orig
sed -e 's/dev\/ad0/dev\/mirror\/gm0/g' /mnt/etc/fstab.orig /mnt/etc/fstab
echo 'swapoff=YES' /mnt/etc/rc.conf # for 5.3-RELEASE only
echo 'geom_mirror_load=YES' /mnt/boot/loader.conf
# instruct boot stage 2 loader on first disk to boot
# with the boot stage 3 loader from the second disk
# (mainly because BIOS might not allow easy booting from second ATA disk
# or at least requires manual intervention on the console)
echo 1:ad(1,a)/boot/loader /boot.config
# reboot system
# (for running system with GEOM mirror on second disk)
shutdown -r now
# make sure the first disk is treated as a really fresh one
# (also not really necessary, but makes procedure more deterministically
;-) dd if=/dev/zero of=/dev/ad0 bs=512 count=79
# switch GEOM mirror to auto-synchronization and add first disk
# (first disk is now immediately synchronized with the second disk content)
gmirror configure -a gm0
gmirror insert gm0 /dev/ad0
# wait for the GEOM mirror synchronization to complete
sh -c 'while [ .`gmirror list | grep SYNCHRONIZING` != . ]; do sleep 1;
done'
# reboot into the final two-disk GEOM mirror setup
# (now actually boots with the MBR and boot stages on first disk
# as it was synchronized from second disk)
shutdown -r now
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