2021-04-11 00:19:56 -05:00
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#!/bin/bash
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# Intention: bare-metal backup and restore linux running system (root), quite handy for restoring to VM
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2021-04-12 13:02:49 -05:00
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# It is STRONGLY recommended to get used to doing a full bare-metal backup of root before doing any package updates/upgrades
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2021-04-11 00:19:56 -05:00
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# REF: http://crunchbang.org/forums/viewtopic.php?id=24268
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# DEPENDS: fsarchiver, /root/bin/boojum/BKPDEST.mrg (up to date with a valid destination dir)
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# NOTE define a PATH here if you want to run from CRON
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# NOTE if you're running stuff like mysql or anything making live updates, you should stop the related service
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keepdays=31
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rootdev=$(df / |grep /dev |awk '{print $1}')
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bkpdate=$(date +%Y%m%d)
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# xxx TODO EDITME vv edit BKPDEST to define your backup destination dir before running this
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source /root/bin/boojum/BKPDEST.mrg # now provides mount test
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dest=$bkpdest/notshrcompr
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ddir=$dest/bkpsys-$myhn
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mkdir -pv $ddir
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chmod 750 $ddir # drwxr-x---
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cd $ddir || failexit 199 "! Could not CD to $ddir"
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# need shorter filename for UDF restores 2017.0827
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#outfile=bkpsys--p2300m-dell-1550-studio--backup-root-sda6--antix16-64--debian-no-systemd--1tb-drive--$bkpdate-fsarc1.fsa
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outfile="bkpsys-$myhn-64-debstable10-$bkpdate-fsarc-ZSTD.fsa"
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# xxx TODO ^^ EDITME
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cp -v /tmp/fdisk-l.txt $ddir
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cp -v /tmp/smartctl.txt $ddir
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cp -v $0 $ddir
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2021-04-12 13:02:49 -05:00
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cp -v ~/bin/boojum/RESTORE-fsarchive-root*.sh $ddir
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2021-04-11 00:19:56 -05:00
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# copy restore script to backup dir, goes with mkrestoredvdiso.sh
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# NOTE autoclean !! find bkps and flist files more than XX days old and delete
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cd $ddir && \
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find $ddir/* \( -name "bkp*fsa" -o -name "flist*" \) -type f -mtime +$keepdays -exec /bin/rm -v {} \;
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echo "o $0 - backing up ROOT"
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df -hT / $dest
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date
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numproc=$(nproc --ignore=1)
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#time fsarchiver -v -o -A -z 1 -j 2 savefs \
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2021-04-12 13:02:49 -05:00
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# NOTE older / LTS distros may need to use lower-case -z since the package ver may not support zstd; ubuntu 20.04 LTS should be OK
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2021-04-11 00:19:56 -05:00
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time fsarchiver -o -A -Z 1 -j $numproc savefs \
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$ddir/$outfile \
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$rootdev
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cd $ddir
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fsarchiver archinfo $outfile 2> flist--$outfile.txt
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ls -lh $ddir/*
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echo "$(date) - $0 done"
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exit;
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NOTE this script does NOT cover zfs-as-root on linux!
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run bkpcrit.sh for that before doing any update/upgrades
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HOWTO restore:
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# time fsarchiver restfs backup-root-sda1--fryserver--ubuntu1404-*-fsarc1.fsa id=0,dest=/dev/sdf1
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Statistics for filesystem 0
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* files successfully processed:....regfiles=159387, directories=25579, symlinks=49276, hardlinks=25, specials=108
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* files with errors:...............regfiles=0, directories=0, symlinks=0, hardlinks=0, specials=0
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real 4m26.116s
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( 3.9GB )
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PROTIP fsarchiver can restore to a different filesystem OTF such as xfs, should Just Work as long as you edit fstab
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after restore (make sure no filesystem-specific mount options such as {commit,errors=remount-ro};
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+ changing ext4 to auto may also work)
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and before booting restored system / VM
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NOTE if you have a separate /home (and you should) you will need to restore that as well into the VM b4 booting it
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