K. I've just gotten to the point where our VM guy is going to finally let
me USE vdisk for swap (took much convincing) and he assigned that device at
dev 300.
swapgen not withstanding, I've been unable to get linux to recognize the
device. I've tried adding it using an add command echoed to
/proc/dasd/devices and I get
0203(ECKD) at ( 94: 12) is dasdd : active at blocksize: 4096, 216000
blocks, 843 MB
0300(none) at ( 94: 16) is dasde : unknown
I wanted to resolve THIS part before I tried to do something slick with
swapgen. Perhaps I am being premature?
Dave Jones
<[EMAIL PROTECTED]
e.net> To
Sent by: Linux on [EMAIL PROTECTED]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: New version of SWAPGEN
available
06/25/2004 09:24
AM
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
Yes, it's ready for Linux use as a swap device. You just need an entry
for "swap" in the /etc/fstab file.......
DJ
James Melin wrote:
>So this swapgen utility makes the V-Disk linux ready? Does that mean it's
>formatted as swap? What do you do then within in the Linux guest to use
>the device as swap?
>
>
>
>
> Adam Thornton
> <[EMAIL PROTECTED]
> mine.net> To
> Sent by: Linux on [EMAIL PROTECTED]
> 390 Port cc
> <[EMAIL PROTECTED]
> IST.EDU> Subject
> New version of SWAPGEN available
>
> 06/24/2004 05:00
> PM
>
>
> Please respond to
> Linux on 390 Port
> <[EMAIL PROTECTED]
> IST.EDU>
>
>
>
>
>
>
>Version 5 of SWAPGEN is now available from
>http://www.sinenomine.net/downloads
>
>It's pretty much the same as version 4, but there's a new option:
>REUSE
>
>If your system policy doesn't allow your guests to define their own
>VDISKs, but instead mandates that they be present in the directory
>entry, you can use, for example,
>
>SWAPGEN 152 200000 ( REUSE
>
>(which would write a Linux swap signature on a DIAG-accessible,
>CMS-FORMATted and RESERVEd 200000 block V-DISK at address 152).
>
>Note that if you're using REUSE you still have to specify the size in
>512-blocks, and it needs to match the actual device size. I agonized
>over putting the feature in at all, because it makes it possible to
>destroy extant data with SWAPGEN (which was not previously possible),
>and I finally compromised by only touching devices whose size you've
>specified on the command line. Consider that the safety catch: if
>you've said REUSE and you know the size of the device, we assume you
>really do mean to overwrite it.
>
>REUSE is *not* the default. The default is still to detach whatever's
>at the address you specify, allocate a V-DISK at that address, and use
>it.
>
>Adam
>
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--
Dave Jones Sine Nomine Associates
Houston, TX 281.578.7544
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