68 lines
1.7 KiB
Bash
68 lines
1.7 KiB
Bash
#!/bin/bash
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#%stage: softraid
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#%programs: /sbin/mdadm
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#%modules: raid0 raid1 raid456
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#%if: -n "$need_mdadm"
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#
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##### MD (Software-)Raid
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##
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## This activates and waits for an MD software raid.
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##
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## Command line parameters
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## -----------------------
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##
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## need_mdadm=1 use MD raid
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## md_uuid the uuid of the raid to activate
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##
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# load the necessary module before we initialize the raid system
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load_modules
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[ "$mduuid" ] && md_uuid="$mduuid"
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md_major=$(sed -ne 's/\s*\([0-9]\+\)\s*md$/\1/p' /proc/devices)
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if [ -n "$md_major" -a "$md_major" = "$maj" ]; then
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md_minor="$min"
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md_dev="/dev/md$md_minor"
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fi
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# Always start md devices read/only. They will get set to rw as soon
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# as the first write occurs. This way we can guarantee that no
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# restore occurs before resume.
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if [ -f /sys/module/md_mod/parameters/start_ro ]; then
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echo 1 > /sys/module/md_mod/parameters/start_ro
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fi
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if [ -n "$need_mdadm" ]; then
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if [ -f /etc/mdadm.conf ] ; then
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mdconf="-Ac /etc/mdadm.conf"
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[ -z "$md_dev" ] && md_dev="--scan"
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fi
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if [ -n "$md_uuid" ] ; then
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mdarg="--uuid=$md_uuid"
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elif [ -n "$md_uuid" ] ; then
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mdarg="$mdarg --uuid=$md_uuid"
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fi
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if [ -n "$md_minor" ] ; then
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mdarg="$mdarg --super-minor=$md_minor"
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md_dev="/dev/md$md_minor"
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elif [ -z "$md_minor" -a -n "$md_minor" ] ; then
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mdarg="$mdarg --super-minor=$md_minor"
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fi
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case $resumedev in
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/dev/md*)
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echo 1 > /sys/module/md_mod/parameters/start_ro
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resume_minor="${resumedev#/dev/md}"
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mdadm -Ac partitions -m $resume_minor --auto=md $resumedev
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;;
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esac
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if [ "$md_dev" ] ; then
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/sbin/mdadm $mdconf --auto=md $md_dev || /sbin/mdadm -Ac partitions $mdarg --auto=md $md_dev
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fi
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fi
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