47 lines
1.6 KiB
Diff
47 lines
1.6 KiB
Diff
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From 43819af68c7789ec932c25e699c56889fdf7276c Mon Sep 17 00:00:00 2001
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From: Fabian Vogt <fvogt@suse.com>
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Date: Thu, 21 Jan 2016 17:13:07 +0100
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Subject: [PATCH] Correctly handle module aliases
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Handle module aliases correctly to not generate unbootable
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initrds with different kernel versions when modules were renamed
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or replaced.
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Signed-off-by: Fabian Vogt <fvogt@suse.com>
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---
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dracut.sh | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/dracut.sh b/dracut.sh
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index 98dbe0b..ae8772b 100755
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--- a/dracut.sh
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+++ b/dracut.sh
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@@ -1195,6 +1195,27 @@ if [[ $hostonly ]]; then
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while read m rest || [ -n "$m" ]; do
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host_modules["$m"]=1
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done </proc/modules
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+
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+ # Explanation of the following section:
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+ # Since kernel 4.4, mpt3sas is a complete replacement for mpt2sas.
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+ # mpt3sas has an alias to mpt2sas now, but since mpt3sas isn't loaded
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+ # when generating the initrd from kernel < 4.4, it's not included.
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+ # The other direction has the same issue:
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+ # When generating the initrd from kernel >= 4.4, mpt2sas isn't loaded,
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+ # so it's not included.
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+ # Both ways result in an unbootable initrd.
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+
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+ # also add aliases of loaded modules
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+ for mod in "${!host_modules[@]}"; do
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+ aliases=$(modinfo -F alias "$mod" 2>&1)
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+ for alias in $aliases; do
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+ host_modules["$alias"]=1
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+ done
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+ # mod might be an alias in the target kernel, find the real module
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+ mod_filename=$(modinfo -k "$kernel" "$mod" -F filename)
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+ [ $? -ne 0 ] && continue
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+ host_modules["$(basename -s .ko "$mod_filename")"]=1
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+ done
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fi
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unset m
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