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64 lines
1.7 KiB
64 lines
1.7 KiB
#!/bin/sh |
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# |
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# Preferred format: |
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# root=nbd:srv:port/exportname[:fstype[:rootflags[:nbdopts]]] |
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# [root=*] netroot=nbd:srv:port/exportname[:fstype[:rootflags[:nbdopts]]] |
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# |
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# nbdopts is a comma separated list of options to give to nbd-client |
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# |
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# root= takes precedence over netroot= if root=nbd[...] |
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# |
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# This script is sourced, so root should be set. But let's be paranoid |
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[ -z "$root" ] && root=$(getarg root=) |
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if [ -z "$netroot" ]; then |
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for netroot in $(getargs netroot=); do |
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[ "${netroot%%:*}" = "nbd" ] && break |
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done |
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[ "${netroot%%:*}" = "nbd" ] || unset netroot |
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fi |
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# Root takes precedence over netroot |
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if [ "${root%%:*}" = "nbd" ]; then |
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if [ -n "$netroot" ]; then |
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warn "root takes precedence over netroot. Ignoring netroot" |
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fi |
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netroot=$root |
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unset root |
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fi |
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# If it's not nbd we don't continue |
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[ "${netroot%%:*}" = "nbd" ] || return |
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# Check required arguments |
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nroot=${netroot#nbd:} |
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server=${nroot%%:*} |
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if [ "${server%"${server#?}"}" = "[" ]; then |
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server=${nroot#[} |
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server=${server%%]:*}\] |
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nroot=${nroot#*]:} |
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else |
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nroot=${nroot#*:} |
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fi |
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port=${nroot%%:*} |
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unset nroot |
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[ -z "$server" ] && die "Argument server for nbdroot is missing" |
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[ -z "$port" ] && die "Argument port for nbdroot is missing" |
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# NBD actually supported? |
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incol2 /proc/devices nbd || modprobe nbd || die "nbdroot requested but kernel/initrd does not support nbd" |
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# Done, all good! |
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# shellcheck disable=SC2034 |
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rootok=1 |
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# Shut up init error check |
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if [ -z "$root" ]; then |
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root=block:/dev/root |
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# the device is created and waited for in ./nbdroot.sh |
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fi |
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echo 'nbd-client -check /dev/nbd0 > /dev/null 2>&1' > "$hookdir"/initqueue/finished/nbdroot.sh
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