[ale] Restore DVD

[Christopher Fowler]

Bootable DVD that does it all.  Take blank hardware, restore, reboot,
and system is up.

On Wed, 2004-10-20 at 15:13, Yu, Jerry wrote:
> it may help some by turning on swap after mkswap (swapon)
> it may help some by restoring to raw disks instead of to logical volume like
> md0 (or tune down the mirroring speed as someone suggested in a different
> thread)
> it may help to try 'tar' and untar. I always use tar/untar. em, cpio
> sometimes.
> 
> Q: by 'restore DVD', do you mean 'DVD containing the backup dump', or 'a
> bootable DVD that mounts itself and mkfs/mkswap/restore/grub and all that'?
> 
> # -----Original Message-----
> # From: ale-bounces at ale.org [mailto:ale-bounces at ale.org]On Behalf Of
> # Christopher Fowler
> # Sent: Wednesday, October 20, 2004 1:06 PM
> # To: ale at ale.org
> # Subject: [ale] Restore DVD
> # 
> # 
> # I'm creating a restore DVD and it is taking a very long time 
> # to restore
> # the data.  It takes longer to restore than it did to install 
> # the system.
> # 
> # I'm using dump/restore to do the archival and restoration.  When I do
> # create the backup I am creating it with the option '-j9'.  
> # This adds the
> # highest level ob bzip2 compression.  I am not concerned with the
> # resources that takes since the system is a 3.0P4 with 1mb 
> # cache.  It has
> # plenty of horsepower to do the restoration.
> # 
> # What  I can not figure out is why it is taking so long.
> # 
> # Here is the data:
> # 
> # #1 Restore DVD
> # 
> # 12x CD-RW used for testing and not wasting blank CD-Rs
> # 
> # 
> # #2 disk usage and size after restore
> # 
> # Filesystem                Size      Used Available Use% Mounted on
> # /dev/root.old           891.0k    387.0k    504.0k  43% /initrd
> # /dev/hdc                651.2M    651.2M         0 100% /initrd/cd
> # /dev/loop0               89.7M     89.7M         0 100% /
> # none                    501.5M      3.3M    498.2M   1% /mnt/rw
> # /dev/md0                180.0G      1.6G    169.1G   1% 
> # /mnt/rw/tmp/md0
> # 
> # I'm only restoring 1.6G of stuff
> # 
> # 
> # #3 Time it took to do resotre:
> # 
> # *************************************************
> # * Restoration Complete!                         *
> # *************************************************
> # Restoration took 15903 seconds
> # 
> # That is a very long time
> # 
> # #4 Script used
> # #!/bin/sh
> # 
> # echo "*************************************************"
> # echo "* Restore System to Factory Defaults            *"
> # echo "*************************************************"
> # echo -n "Are you sure (y/n): "
> # read ans
> # if [ $ans != 'y' ]
> # then
> #         exit 0
> # fi
> # 
> # START=`date +%s`
> # 
> # raidstop --configfile /data/raidtab /dev/md0 2>/dev/null 1>/dev/null
> # echo "Blanking /dev/hda"
> # dd if=/dev/zero of=/dev/hda1 bs=1024k count=100
> # dd if=/dev/zero of=/dev/hda2 bs=1024k count=100
> # dd if=/dev/zero of=/dev/hda bs=1024k count=5
> # echo "Blanking /dev/hdb"
> # dd if=/dev/zero of=/dev/hdb1 bs=1024k count=100
> # dd if=/dev/zero of=/dev/hdb2 bs=1024k count=100
> # echo "Creating partitions on /dev/hda"
> # sfdisk /dev/hda < /data/hda.out || exit 1
> # echo "Creating partitions on /dev/hdb"
> # sfdisk /dev/hdb < /data/hdb.out || exit 2
> # echo "Creating swap on /dev/hda2"
> # mkswap -v1 /dev/hda2 || exit 2
> # echo "Creating swap on /dev/hdb2"
> # mkswap -v1 /dev/hda2 || exit 2
> # echo "Turning RAID1 on /dev/md0"
> # mkraid --configfile /data/raidtab --really-force /dev/md0 || exit 3
> # echo "Creating FS"
> # mke2fs -j -i 4096 /dev/md0 || exit 4
> # echo "Mounting FS"
> # mkdir /tmp/md0 || exit 5
> # mount -t ext3 /dev/md0 /tmp/md0 || exit 6
> # echo "Restoring files (this may take a while)...."
> # cd /tmp/md0
> # restore -rvf /data/dump.out
> # mkdir proc
> # mkdir sys
> # cd /
> # echo "Restoring GRUB."      
> # grub --batch < /data/grub.conf
> # STOP=`date +%s`
> # TTIME=`expr $STOP - $START`
> # echo ""
> # echo "*************************************************"
> # echo "* Restoration Complete!                         *"
> # echo "*************************************************"
> # echo "Restoration took $TTIME seconds"
> # 
> # 
> # Should I skip restore and use tar?
> # 
> # 
> # 
> # 
> # 
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> #