We are working on a proposal for redundant dump device support that I plan
to
share in the next few weeks; I've got a prototype mostly working that can be
contributed. Let me know how you are approaching this, I'll send details of
what we are doing here later this week. Sounds like a good opportunity for
collaboration on this.
Regards,
Dave Howell
-----Original Message-----
From: Masashige Kotani [mailto:m-kotani@xxxxxxxxxxxxxxx]
Sent: Tuesday, September 04, 2001 4:07 AM
To: lkcd@xxxxxxxxxxx
Subject: multiple dump devices
Hello.
Nowadays, I think that the reliability of memory dumping: extracting memory
as much as possible will be improved.
LKCD uses "only one dump device" in process of memory dump. When it does not
have enough capacity for memory dump it is not able to be used by some
reasons, memory dumping is failure.
- When additional memory devices are attached, The capacity of the dump
device must be increased.
- To avoid failing memory dump by disk failure, want to add alternative dump
devices.
In these cases, I consider that LKCD have to be handle multiple dump devices
to be useful in different environments.
It can improve the following problems:
- When it runs short of capacity in one dump device
Dump data can be divided and written in two or more dump devices.
- When the dump device is broken
The LKCD can dump, If it can use at least one among dump devices.
I think that such expansion is indispensable for enterprises use, what do
you think?
LKCD dumps to multiple dump devices with parallel I/O if possible and time
of dumping can be decreased. but it is still under examination.
--Masashige
|