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From 8e3620568cd4e2c7e8db52fcf3f6e25cc4608aaf Mon Sep 17 00:00:00 2001
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From: Marian Csontos <mcsontos@redhat.com>
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Date: Fri, 18 Oct 2013 14:40:40 +0200
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Subject: [PATCH] dracut-functions.sh:check_block_and_slaves*() skip LVM
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internal devs
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Not every device in /dev/mapper should be examined.
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If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
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---
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dracut-functions.sh | 16 ++++++++++++++--
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1 file changed, 14 insertions(+), 2 deletions(-)
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diff --git a/dracut-functions.sh b/dracut-functions.sh
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index 45e09118..2e6e8456 100755
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--- a/dracut-functions.sh
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+++ b/dracut-functions.sh
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@@ -579,7 +579,7 @@ host_fs_all()
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check_block_and_slaves() {
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local _x
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[[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
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- "$1" $2 && return
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+ if ! lvm_internal_dev $2; then "$1" $2 && return; fi
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check_vol_slaves "$@" && return 0
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if [[ -f /sys/dev/block/$2/../dev ]]; then
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check_block_and_slaves $1 $(<"/sys/dev/block/$2/../dev") && return 0
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@@ -595,7 +595,7 @@ check_block_and_slaves() {
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check_block_and_slaves_all() {
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local _x _ret=1
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[[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
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- if "$1" $2; then
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+ if ! lvm_internal_dev $2 && "$1" $2; then
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_ret=0
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fi
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check_vol_slaves "$@" && return 0
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@@ -1672,3 +1672,15 @@ get_ucode_file ()
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printf "%02x-%02x-%02x" ${family} ${model} ${stepping}
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fi
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}
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+
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+# Not every device in /dev/mapper should be examined.
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+# If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
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+lvm_internal_dev() {
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+ local dev_dm_dir=/sys/dev/block/$1/dm
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+ [[ ! -f $dev_dm_dir/uuid || $(<$dev_dm_dir/uuid) != LVM-* ]] && return 1 # Not an LVM device
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+ local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
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+ eval $(dmsetup splitname --nameprefixes --noheadings --rows "$(<$dev_dm_dir/name)" 2>/dev/null)
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+ [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
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+ [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
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+}
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+
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