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kdumpctl: rebuild kdump initramfs if cluster or fence_kdump config is changed.

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If the system is configured fence kdump, we need to update kdump
initramfs if cluster or fence_kdump config is newer.

In RHEL7, cluster config is no longer keeping locally but stored
remotely. Fortunately we can use a pcs tool to retrieve the xml based
config and parse the last changed time from that.

/etc/sysconfig/fence_kdump is used to configure runtime arguments to
fence_kdump_send. So We have to pass the arguments to 2nd kernel.

When cluster config or /etc/sysconfig/fence_kdump is newer than local
kdump initramfs, we must rebuild initramfs to adapt changes in cluster.

For example:

Detected change(s) the following file(s):

  cluster-cib /etc/sysconfig/fence_kdump
Rebuilding /boot/initramfs-xxxkdump.img
[..]

Signed-off-by: WANG Chao <chaowang@redhat.com>
Tested-by: Zhi Zou <zzou@redhat.com>
Tested-by: Marek Grac <mgrac@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This commit is contained in:
WANG Chao 2013-12-17 15:00:33 +08:00
parent b0535afe2d
commit 590a0c21ab
1 changed files with 26 additions and 0 deletions
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26
kdumpctl
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@ -132,6 +132,25 @@ function check_config()
return 0
}
# check_fence_kdump <image timestamp>
# return 0 if fence_kdump is configured and kdump initrd needs to be rebuilt
function check_fence_kdump()
{
local image_time=$1
local cib_time
is_fence_kdump || return 1
cib_time=`pcs cluster cib | xmllint --xpath 'string(/cib/@cib-last-written)' - | \
xargs -0 date +%s --date`
if [ -z $cib_time -o $cib_time -le $image_time ]; then
return 1
fi
return 0
}
function check_rebuild()
{
local extra_modules modified_files=""
@ -167,6 +186,9 @@ function check_rebuild()
image_time=0
fi
#also rebuild when cluster conf is changed and fence kdump is enabled.
check_fence_kdump $image_time && modified_files="cluster-cib"
EXTRA_BINS=`grep ^kdump_post $KDUMP_CONFIG_FILE | cut -d\ -f2`
CHECK_FILES=`grep ^kdump_pre $KDUMP_CONFIG_FILE | cut -d\ -f2`
EXTRA_BINS="$EXTRA_BINS $CHECK_FILES"
@ -174,6 +196,10 @@ function check_rebuild()
EXTRA_BINS="$EXTRA_BINS $CHECK_FILES"
files="$KDUMP_CONFIG_FILE $kdump_kernel $EXTRA_BINS"
if [ -f $FENCE_KDUMP_CONFIG ]; then
files="$files $FENCE_KDUMP_CONFIG"
fi
check_exist "$files" && check_executable "$EXTRA_BINS"
[ $? -ne 0 ] && return 1