I would say that you either need to wait until SUSE ships the
functionality in a pre-built kernel, or compile your own for testing
purposes, with the understanding that they won't support you.


Mark Post

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Tom Shilson
Sent: Friday, March 17, 2006 10:47 PM
To: [email protected]
Subject: dcssblk.segments= Kernel Parameter Invalid??


My z/VM wizard returned from share greatly excited to try swapping to
DCSS. He set up the segments and an EXEC that would properly define
storage with the gap.  It was up to me to do the Linux part. With only a
few stumbles I got it running.  There is one inconsistency.  I set up
the zipl.conf parameter to specify dcss.segments=SWAP16M,<more segments>
.  The console log says that the dcss.segments= parameter is invalid,
yet it must be there for swapping to DCSS to work. /proc/cmdline shows
the entire parameter string.  Here is a snip from the console log:

Kernel command line: root=/dev/dasdb1 selinux=0 TERM=dumb elevator=cfq
vmpoff=LOGOFF
dcssblk.segments=SWAP16M,SWAP32M,SWAP64M,SWAP128M,SWAP256M,SWAP512M
BOOT_IMAGE=0
Unknown boot option
`dcssblk.segments=SWAP16M,SWAP32M,SWAP64M,SWAP128M,SWAP256M,SWAP512M':
ignoring

Here is my zipl.conf parameter string:     parameters =
"root=/dev/dasdb1
selinux=0 TERM=dumb elevator=cfq vmpoff=LOGOFF
dcssblk.segments=SWAP16M,SWAP32M,SWAP64M,SWAP128M,SWAP256M,SWAP512M "

This is SuSE SLES9 64-bit SP3 recently patched running on z/VM 5.2 on a
z900.

Can anyone explain it or tell me which organization I should notify?

Thanks,

Tom

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