nixos stage-1: factor device waiting into a function
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@ -352,6 +352,33 @@ mountFS() {
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}
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}
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# Function for waiting a device to appear.
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waitDevice() {
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local device="$1"
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# USB storage devices tend to appear with some delay. It would be
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# great if we had a way to synchronously wait for them, but
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# alas... So just wait for a few seconds for the device to
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# appear.
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if test ! -e $device; then
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echo -n "waiting for device $device to appear..."
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try=20
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while [ $try -gt 0 ]; do
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sleep 1
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# also re-try lvm activation now that new block devices might have appeared
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lvm vgchange -ay
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# and tell udev to create nodes for the new LVs
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udevadm trigger --action=add
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if test -e $device; then break; fi
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echo -n "."
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try=$((try - 1))
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done
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echo
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[ $try -ne 0 ]
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fi
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}
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# Try to find and mount the root device.
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# Try to find and mount the root device.
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mkdir -p $targetRoot
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mkdir -p $targetRoot
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@ -384,29 +411,11 @@ while read -u 3 mountPoint; do
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;;
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;;
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esac
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esac
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# USB storage devices tend to appear with some delay. It would be
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if test -z "$pseudoDevice" && ! waitDevice "$device"; then
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# great if we had a way to synchronously wait for them, but
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# If it doesn't appear, try to mount it anyway (and
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# alas... So just wait for a few seconds for the device to
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# probably fail). This is a fallback for non-device "devices"
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# appear. If it doesn't appear, try to mount it anyway (and
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# that we don't properly recognise.
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# probably fail). This is a fallback for non-device "devices"
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echo "Timed out waiting for device $device, trying to mount anyway."
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# that we don't properly recognise.
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if test -z "$pseudoDevice" -a ! -e $device; then
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echo -n "waiting for device $device to appear..."
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try=20
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while [ $try -gt 0 ]; do
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sleep 1
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# also re-try lvm activation now that new block devices might have appeared
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lvm vgchange -ay
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# and tell udev to create nodes for the new LVs
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udevadm trigger --action=add
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if test -e $device; then break; fi
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echo -n "."
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try=$((try - 1))
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done
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echo
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if [ $try -eq 0 ]; then
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echo "Timed out waiting for device $device, trying to mount anyway."
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fi
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fi
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fi
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# Wait once more for the udev queue to empty, just in case it's
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# Wait once more for the udev queue to empty, just in case it's
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