On 25/08/2016:06:23:26 PM, Xunlei Pang wrote:
Update "kexec-kdump-howto" to illustrate the usage of special mount information via "dracut_args".
Suggested-by: Dave Young dyoung@redhat.com Signed-off-by: Xunlei Pang xlpang@redhat.com
Reviewed-by: Pratyush Anand panand@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..ae7a5fa 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 /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
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