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91 lines
2.9 KiB
Bash
91 lines
2.9 KiB
Bash
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#!/bin/bash5
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# osx, should adapt easily to linux
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# REF: http://girlyngeek.blogspot.com/2014/02/zfs-on-read-only-devices.html
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# Having trouble importing zpool on osx from "raw" write w/no containing filesystem,
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# decided to switch to UDF filesystem for optical - mount that and import zfs file-based pool
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# failexit.mrg
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function failexit () {
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echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
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exit $1
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}
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userowns=dave # xxx TODO EDITME
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# xxx EDITME
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zpfile=zopticalpool
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fsize=4400 # MB - for standard DVD+/-R
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howmany=1 # for 4.7G DVD+RW
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function mkpool () {
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echo "o $PWD - Creating optical zpool of $howmany""x$fsize"" MB"
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for z in $(seq 1 $howmany); do
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time gdd if=/dev/zero of="$zpfile"_$z bs=1M conv=sparse count=$fsize \
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|| failexit 99 "Failed to DD output zpool file $z"
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done
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}
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# Only if not exist
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[ -e "$zpfile"_1 ] || mkpool
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chown -v $userowns $zpfile*
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# xxx EDITME
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zp=myzfsdvd
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devs=$(echo $PWD/zopticalpool_*)
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# -O mountpoint=$HOME/myzfsdvd -O checksum=sha256 \
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# NOTE RAID0
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zpool create -o ashift=11 -o failmode=continue -o autoexpand=off -o autoreplace=off \
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-O checksum=sha256 -O compression=gzip-9 -O dedup=on \
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-O atime=off -O devices=off -O exec=off -O setuid=off \
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$zp $devs \
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|| failexit 101 "Failed to create zpool $zp"
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mp=$(zfs get mountpoint $zp |tail -n 1 |awk '{print $3}')
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#NAME PROPERTY VALUE SOURCE
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#myzfsdvd mountpoint /Volumes/myzfsdvd default
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#/Volumes/myzfsdvd
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# osx
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[ $(df |grep -c Volumes/$zp) -gt 0 ] && chown -v $userowns /Volumes/$zp
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# Linux
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[ -e /$zp ] && chown -v $userowns /$zp
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zpool status -v $zp |awk 'NF>0'
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ls -al $mp
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echo ''
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gdf -hT |head -n 1
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gdf -hT |grep $zp
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echo '====='
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echo "To burn to disc, FIRST zpool export $zp"
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echo "To re-import $zp -- mount dvd, cd to it, then zpool import -o readonly=on $zp -d \$PWD"
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echo "/Volumes/zfsoptical # zpool import -a -o readonly=on -d \$PWD" > howto-reimport-zpool.txt
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cp -v $0 $PWD
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exit;
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# OSX disc burning REF: https://support.apple.com/guide/mac-help/burn-cds-and-dvds-mchl8addfd95/12.0/mac/12.0
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# to burn dvd on osx from files, better to use "burn" app as it can also Erase RW discs
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# For larger media, e.g. 50GB Bluray, might want to do copies=2 and forgo raidz1 as seeking will slow down I/O
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declare -A ASsector # assoc array
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ASsector[74min]=333000 # for 74-min CD-Rs and CD-RWs / 650MB
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ASsector[80min]=360000 # for 80-min CD-Rs and CD-RWs / 700MB
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ASsector[dvd]=2298496 # for single-layer DVD-Rs
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ASsector[dvddouble]=4171712 # for double-layer DVD-Rs
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ASsector[dvdplusr]=2295104 # for single-layer DVD+Rs
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ASsector[dvdplusr2]=4173824 # for double-layer DVD+Rs
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ASsector[bluray]=12219392 # for single-layer Blu-rays
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ASsector[bluray2]=24438784 # for double-layer Blu-rays
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ASsector[bluray3]=48878592 # for triple-layer Blu-rays
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ASsector[bluray4]=62500864 # for quad-layer Blu-rays
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usesector=${ASsector[dvdplusr]}
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#echo $usesector
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