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'added new mdadm hook'
This commit is contained in:
Tobias Powalowski
parent
154c4d674c
commit
8174f145f2
4 changed files with 94 additions and 63 deletions
50
lib/initcpio/hooks/arch_mdadm
Normal file
50
lib/initcpio/hooks/arch_mdadm
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@ -0,0 +1,50 @@
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# vim: set ft=sh:
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run_hook ()
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{
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input="$(cat /proc/cmdline)"
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mdconfig="/etc/mdadm.conf"
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# if no config file is present create one from command line parameters
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if ! [ -e $mdconfig ]; then
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#Create initial mdadm.conf
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# scan all devices in /proc/partitions
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echo DEVICE partitions > $mdconfig
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for i in $input; do
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case $i in
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# raid
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md=[0-9]*,/*)
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device="$(/bin/replace -s,/ "$i" "=" "")"
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array="$(/bin/replace -s/ "$device" "," " devices=")"
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echo "ARRAY /dev/$array" >> $mdconfig
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RAID_FOUND=1
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;;
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# partitionable raid
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md=d[0-9]*,/*)
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device="$(/bin/replace -s=d "$i" "md=" "md_")"
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array="$(/bin/replace -s/ "$device" "," " devices=")"
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echo "ARRAY /dev/$array" >> $mdconfig
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RAID_FOUND=1
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;;
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# raid UUID
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md=[0-9]*,[0-9,a-z]*)
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device="$(/bin/replace -s,/ "$i" "=" "")"
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array="$(/bin/replace -s/ "$device" "," " uuid=")"
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echo "ARRAY /dev/$array" >> $mdconfig
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RAID_FOUND=1
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;;
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# partitionable raid UUID
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md=d[0-9]*,[0-9,a-z]*)
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device="$(/bin/replace -s=d "$i" "md=" "md_")"
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array="$(/bin/replace -s/ "$device" "," " uuid=")"
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echo "ARRAY /dev/$array" >> $mdconfig
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RAID_FOUND=1
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;;
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esac
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done
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else
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RAID_FOUND=1
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fi
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if [ "$RAID_FOUND" = 1 ]; then
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# assemble everything
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/sbin/mdassemble.static
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fi
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}
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@ -1,22 +0,0 @@
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run_hook ()
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{
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#TODO scan for these somehow...
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/sbin/modprobe -aq linear multipath raid0 raid1 raid456 raid10>/dev/null 2>&1
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# md= can be specified multiple times. The simplistic commandline
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# parsing does not handle this, so we will let mdassemble parse it
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# create md devices for installation
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for i in $(seq 0 15); do
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/sbin/mdadm --create /dev/md$i > /dev/null 2>&1
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/sbin/mdadm --create -a mdp /dev/md_d$i > /dev/null 2>&1
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done
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for i in $(replace $(echo $md) ',' ' '); do
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case $i in d[0-9])
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mdadm --assemble --auto=mdp /dev/md_$(replace $(echo $md) ',' ' ')
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export USE_RAID_ARRAY=1
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;;
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esac
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done
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if ! [ "$USE_RAID_ARRAY" = "1" ] ; then
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/bin/mdassemble ${CMDLINE}
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fi
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}
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44
lib/initcpio/install/arch_mdadm
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44
lib/initcpio/install/arch_mdadm
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# vim: set ft=sh:
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install ()
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{
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MODULES=" $(checked_modules "drivers/md/*" | grep -v "dm-") "
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BINARIES="mdassemble.static mdadm"
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FILES=""
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SCRIPT="arch_mdadm"
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# check if a custom mdadm.conf exists
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if grep -q ^ARRAY /etc/mdadm.conf; then
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echo "Custom /etc/mdadm.conf file will be used in initramfs for assembling arrays."
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add_file "/etc/mdadm.conf"
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fi
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}
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help ()
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{
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cat<<HELPEOF
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This hook loads the necessary modules for any raid root device,
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and assembles the raid device when run.
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If arrays are defined in /etc/mdadm.conf, the file will be used instead
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of command line assembling.
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Command Line Setup:
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- for raid arrays with persistent superblocks:
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md=<md device no.>,dev0,dev1,...,devn
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md=<md device no.>,uuid
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- for partitionable raid arrays with persistent superblocks:
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md=d<md device no.>,dev0,dev1,...,devn
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md=d<md device no.>,uuid
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Parameters:
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- <md device no.> = the number of the md device:
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0 means md0, 1 means md1, ...
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- <dev0-devn>: e.g. /dev/hda1,/dev/hdc1,/dev/sda1,/dev/sdb1
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or 0900878d:f95f6057:c39a36e9:55efa60a
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Examples:
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- md=d0,/dev/sda3,/dev/sda4 md=d1,/dev/hda1,/dev/hdb1
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This will setup 2 md partitionable arrays.
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- md=0,/dev/sda3,/dev/sda4 md=1,/dev/hda1,/dev/hdb1
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This will setup 2 md arrays with persistent superblocks.
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HELPEOF
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}
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@ -1,41 +0,0 @@
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# Created by Tobias Powalowski <tpowa@archlinux.org>
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install ()
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{
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MODULES=" $(checked_modules "drivers/md/*" | grep -v "dm-") "
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BINARIES="mdadm"
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FILES=""
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SCRIPT="arch_raid"
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add_file "/usr/lib/klibc/bin/mdassemble" "/bin/mdassemble"
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}
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help ()
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{
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cat<<HELPEOF
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This hook loads the necessary modules for an raid root device,
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and assemble the raid device when run, on an arch boot image.
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Kernel Parameters:
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Specify all your md arrays with md= parameter:
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::: Example ::: md=0,/dev/sda3,/dev/sda4 md=1,/dev/hda1,/dev/hdb1
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This will setup 2 md arrays with persistent superblocks
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Setup:
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- for old raid arrays without persistent superblocks:
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md=<md device no.>,<raid level>,<chunk size factor>,<fault level>,dev0,dev1
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- for raid arrays with persistent superblocks:
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md=<md device no.>,dev0,dev1,...,devn
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- for, to assemble a partitionable array:
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md=d<md device no.>,dev0,dev1,...,devn
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Parameters:
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- <md device no.> = the number of the md device:
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0 means md0, 1 means md1, ...
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- <raid level> = -1 linear mode, 0 striped mode
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other modes are only supported with persistent super block
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- <chunk size factor> = (raid-0 and raid-1 only):
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Set the chunk size as 4k << n.
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- <fault level> = totally ignored
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- <dev0-devn>: e.g. /dev/hda1,/dev/hdc1,/dev/sda1,/dev/sdb1
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HELPEOF
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}
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