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From edbd9ca058bcb19f351aca470581db1a67b706d7 Mon Sep 17 00:00:00 2001
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From: Fabian <fvogt@suse.com>
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Date: Fri, 11 Sep 2015 13:35:57 +0200
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Subject: [PATCH] dracut.sh: Support --mount with just mountpoint as parameter
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Right now the --mount parameter of dracut expects a rather long fstab-like
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line. This makes it possible to invoke dracut with e.g. --mount /boot.
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---
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dracut.8.asc | 4 ++++
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dracut.sh | 16 +++++++++++++++-
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2 files changed, 19 insertions(+), 1 deletion(-)
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diff --git a/dracut.8.asc b/dracut.8.asc
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index 5f45ed9..d22c1cb 100644
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--- a/dracut.8.asc
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+++ b/dracut.8.asc
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@@ -338,6 +338,10 @@ provide a valid _/etc/fstab_.
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The default _<dump frequency>_ is "0".
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the default _<fsck order>_ is "2".
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+**--mount** "_<mountpoint>_"::
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+ Like above, but _<device>_, _<filesystem type>_ and _<filesystem options>_
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+ are determined by looking at the current mounts.
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+
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**--add-device** _<device>_ ::
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Bring up _<device>_ in initramfs, _<device>_ should be the device name.
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This can be useful in hostonly mode for resume support when your swap is on
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diff --git a/dracut.sh b/dracut.sh
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index fb5d400..52a628a 100755
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--- a/dracut.sh
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+++ b/dracut.sh
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@@ -160,6 +160,8 @@ Creates initial ramdisk images for preloading modules
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--mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
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Mount device [DEV] on mountpoint [MP] with filesystem
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[FSTYPE] and options [FSOPTS] in the initramfs
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+ --mount "[MP]" Same as above, but [DEV], [FSTYPE] and [FSOPTS] are
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+ determined by looking at the current mounts.
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--add-device "[DEV]" Bring up [DEV] in initramfs
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-i, --include [SOURCE] [TARGET]
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Include the files in the SOURCE directory into the
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@@ -1469,9 +1471,21 @@ if [[ $kernel_only != yes ]]; then
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for line in "${fstab_lines[@]}"; do
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line=($line)
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- [ -z "${line[3]}" ] && line[3]="defaults"
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+
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+ if [ -z "${line[1]}" ]; then
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+ # Determine device and mount options from current system
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+ mountpoint -q "${line[0]}" || derror "${line[0]} is not a mount point!"
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+ line=($(findmnt --raw -n --target "${line[0]}" --output=source,target,fstype,options))
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+ dinfo "Line for ${line[1]}: ${line[@]}"
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+ else
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+ # Use default options
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+ [ -z "${line[3]}" ] && line[3]="defaults"
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+ fi
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+
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+ # Default options for freq and passno
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[ -z "${line[4]}" ] && line[4]="0"
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[ -z "${line[5]}" ] && line[5]="2"
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+
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strstr "${line[2]}" "nfs" && line[5]="0"
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echo "${line[@]}" >> "${initdir}/etc/fstab"
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done
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