Hi
I know that there are 32,760 cylinders for a 3390 MOD27. But thus far I
have been carving my MOD27s on my DS8100 as max. cylinders of 30050 for
my REL z/Linux guests. I was told that for z/Linux (I am running REL4
and 5) that 30050 is the max cylinders it would recognize for a MOD27 is
To: IBMVM@LISTSERV.UARK.EDU
Subject: [IBMVM] Number of MOD-27 Cylinders for a z/Linux guest
Hi
I know that there are 32,760 cylinders for a 3390 MOD27. But thus far I have
been carving my MOD27s on my DS8100 as max. cylinders of 30050 for my REL
z/Linux guests. I was told that for z/Linux
No - that's not true... Linux doesn't care about 3390 model numbers -- it
takes the cylinders it's given and is happy.
The reason that I would define Mod27's as 30050 cylinders (actually 30049)
Is so that 3 3390-9 size minidisks (10016 cylinders) will fit perfectly.
(so: 3x10016 = 30048 + 1
] On
Behalf Of Scott Rohling
Sent: Wednesday, February 10, 2010 12:00 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
No - that's not true... Linux doesn't care about 3390 model numbers --
it takes the cylinders it's given and is happy.
The reason
On Wed, Feb 10, 2010 at 11:59 AM, Scott Rohling scott.rohl...@gmail.comwrote:
No - that's not true... Linux doesn't care about 3390 model numbers -- it
takes the cylinders it's given and is happy.
The reason that I would define Mod27's as 30050 cylinders (actually 30049)
Is so that 3
On Wed, Feb 10, 2010 at 6:38 PM, zMan zedgarhoo...@gmail.com wrote:
Right, my guess is that someone said 27 = 3 x 9 = 3 x 10016 = 30048. Then
they added one for cyl0, then they got confused about origin 0/origin 1 and
wound up at 30050.
Who's confused? A 3390-3 at 3339 cylinders, one for CP
On Wed, Feb 10, 2010 at 3:48 PM, Rob van der Heij rvdh...@gmail.com wrote:
Who's confused? A 3390-3 at 3339 cylinders, one for CP and an almost
full pack mini disk is 3338 cylinders.
So 3390-27 is 30051 cylinders. If you give the guest a pseudo full
pack, that's minus one for CP, so 30050
Except that's not the size of a 3390-27. Ours are all 32760 cylinders in
size.
--
Robert P. Nix Mayo Foundation.~.
RO-OE-5-55 200 First Street SW/V\
507-284-0844 Rochester, MN 55905 /( )\
-^^-^^
In theory,
. Thank you for
your cooperation.
-Original Message-
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf
Of Rob van der Heij
Sent: Wednesday, February 10, 2010 12:49 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: [IBMVM] Number of MOD-27 Cylinders for a z/Linux guest
I think this whole post got confused :-)No one said a 3390-27 is 30051
cylinders.I said that I would consider making one 30049 cylinders since
that equates to 3 3390-9 plus cylinder 0 for a volume label. (3x10016 + 1)
A supposed 'standard' 3390-27 is 32760 cyls -- but past 3390-9 --
@LISTSERV.UARK.EDU
Date:
02/10/2010 03:22 PM
Subject:
Re: Number of MOD-27 Cylinders for a z/Linux guest
Sent by:
The IBM z/VM Operating System IBMVM@LISTSERV.UARK.EDU
No no no. We're all confused!
*My* mod 27's are 32,760 cylinders.
Course we all know there is no such thing as a mod 27
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
I think this whole post got confused :-)No one said a 3390-27 is
30051 cylinders.I said that I would consider making one 30049
cylinders since that equates to 3 3390-9 plus cylinder 0 for a volume
label
, February 10, 2010 3:08 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
No no no. We're all confused!
*My* mod 27's are 32,760 cylinders.
Course we all know there is no such thing as a mod 27 and they are
really 3390-9 of a larger size, which can be any size
10, 2010 4:46 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
Yes, I followed up with my IBM DS8100 support folks and it just so
happens that with the DS8100 when you ask for a MOD27 it says to
calculate as 3x a MOD9(10017 = 30051). But yes any number
On 2/10/10 4:36 PM, Greg Dyrda gregory.l.dy...@us.hsbc.com wrote:
Yes we are all confused. I think Rob was just trying to point out that 30050
cyls for a 3390-27 makes perfect sense based on the false assumption that all
3390 DASD models are a multiple of a 3390-1.
And I am Marie of
To quote the DS8000 Architecture and Implementation Redbook (SG24-6786, p
g
101):
If the number of cylinders specified is not an integral multiple of 1113
cylinders, then some space in the last allocated extent is wasted. For
example, if you define 1114 or 3340 cylinders, 1112 cylinders are
On Wed, Feb 10, 2010 at 5:29 PM, Brian Nielsen bniel...@sco.idaho.govwrote:
To quote the DS8000 Architecture and Implementation Redbook (SG24-6786, pg
101):
If the number of cylinders specified is not an integral multiple of 1113
cylinders, then some space in the last allocated extent is
Not quite. Sounds like the DS8000 architecture allocates DASD in 3390
mod1-sized extents, so requesting a 1114 cylinder DASD results in the
allocation of two 1113 cylinder extents. The first extent is fully
utilized as the first 1113 cylinders of the requested DASD, but only the
first cylinder
compatibility.
-Original Message-
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf
Of Brian Nielsen
Sent: Wednesday, February 10, 2010 3:30 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
To quote the DS8000 Architecture
...@listserv.uark.edu] On
Behalf Of Brian Nielsen
Sent: Wednesday, February 10, 2010 3:30 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
To quote the DS8000 Architecture and Implementation Redbook (SG24-6786, p
g
101):
If the number of cylinders
On Thu, Feb 11, 2010 at 12:37 AM, zMan zedgarhoo...@gmail.com wrote:
1112 cylinders are wasted -- out of 1114? That can't be right!
Out of 2226 actually. Apparently the allocation granularity of the
DS8K is 1113 cylinders. So when you ask for 1114 it will allocate 2 x
1113 and you get only 1114
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Number of MOD-27 Cylinders for a z/Linux guest
Not quite. Sounds like the DS8000 architecture allocates DASD in 3390
mod1-sized extents, so requesting a 1114 cylinder DASD results in the
allocation of two 1113 cylinder extents. The first extent is fully
On Wed, Feb 10, 2010 at 6:48 PM, Tom Rae tom_...@shaw.ca wrote:
Not quite. Sounds like the DS8000 architecture allocates DASD in 3390
mod1-sized extents, so requesting a 1114 cylinder DASD results in the
allocation of two 1113 cylinder extents. The first extent is fully utilized
as the first
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