[ale] Restore DVD

[Yu, Jerry]

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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