Update "kexec-kdump-howto" to illustrate the usage of special mount
information via "dracut_args".
Reviewed-by: Pratyush Anand <panand(a)redhat.com>
Suggested-by: Dave Young <dyoung(a)redhat.com>
Acked-by: Dave Young <dyoung(a)redhat.com>
Signed-off-by: Xunlei Pang <xlpang(a)redhat.com>
---
kexec-kdump-howto.txt | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/kexec-kdump-howto.txt b/kexec-kdump-howto.txt
index 38f831e..f46563f 100644
--- a/kexec-kdump-howto.txt
+++ b/kexec-kdump-howto.txt
@@ -345,6 +345,24 @@ mount the NFS mount and copy out the vmcore to your NFS server.
Restart the
kdump service via '/sbin/systemctl restart kdump.service' to commit this change
to your kdump initrd.
+Special mount via "dracut_args"
+
+You can utilize "dracut_args" to pass "--mount" to kdump, see dracut
manpage
+about the format of "--mount" for details. If there is any "--mount"
specified
+via "dracut_args", kdump will build it as the mount target without doing any
+validation (mounting or checking like mount options, fs size, save path, etc),
+so you must test it to ensure all the correctness. You cannot use other targets
+in /etc/kdump.conf if you use "--mount" in "dracut_args". You also
cannot specify
+mutliple "--mount" targets via "dracut_args".
+
+One use case of "--mount" in "dracut_args" is you do not want to
mount dump target
+before kdump service startup, for example, to reduce the burden of the shared nfs
+server. Such as the example below:
+dracut_args --mount "192.168.1.1:/share /mnt/test nfs4 defaults"
+
+NOTE:
+- <mountpoint> must be specified as an absolute path.
+
Remote system via ssh/scp
Dumping over ssh/scp requires setting up passwordless ssh keys for every
--
1.8.3.1
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