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Old 11-21-2011, 05:48 PM   #1
philclowes
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DASD not seen online under RHEL6.0 zLinux


Running under z/VM on IBM MF

User directory includes several DASD disk devices
ie
00: CP Q V DASD
00: DASD 0000 3390 LB4SHR R/W 500 CYL ON DASD DD24 SUBCHANNEL = 0009
00: DASD 0151 3390 LB4LLC R/W 10000 CYL ON DASD 6A4F SUBCHANNEL = 000B
00: DASD 0190 3390 LB4RES R/O 107 CYL ON DASD 6810 SUBCHANNEL = 0010
00: DASD 0191 3390 LB4US5 R/O 1 CYL ON DASD DF24 SUBCHANNEL = 0006
00: DASD 0193 3390 LB4US8 R/O 10 CYL ON DASD DE3F SUBCHANNEL = 0007
00: DASD 019D 3390 LB4RES R/O 200 CYL ON DASD 6810 SUBCHANNEL = 0011
00: DASD 019E 3390 LB4RES R/O 500 CYL ON DASD 6810 SUBCHANNEL = 0012
00: DASD 0319 3390 LB4SHR R/O 200 CYL ON DASD DD24 SUBCHANNEL = 0013
00: DASD 0333 3390 LB4LL1 R/W 10000 CYL ON DASD 5D39 SUBCHANNEL = 000A
00: DASD 1111 3390 LB4SHR R/O 10 CYL ON DASD DD24 SUBCHANNEL = 0008


However, Checking under /sys/bus/ccw/devices
I only see the boot disk (0333 and an unformatted disk - 0151)

Under a RHEL5.6 boot using the same zVM userid, I see entries under
/sys/bus/ccw/devices for all disk addresses that are listed above.


What this means is that, under 5.6 I would have no problem for example issuing
chccwdev -e 1111 to bring the 1111 disk online so I can access the disk. Under 6.0 I get a device 0.0.1111 not found message
Is this W.A.D or is there something I have missed in my setup of the zLinux image?
 
Old 11-21-2011, 06:12 PM   #2
macemoneta
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Just curious here... You're paying IBM a lot for a mainframe and a service agreement. You're also paying Red Hat for Linux service and support. But when you have a problem you come to a free, volunteer support site?
 
Old 11-21-2011, 09:22 PM   #3
syg00
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No, that should work. You messed up.
You might find this an interesting site. Look under "Community" for the Linux-390 listserv; very active, very knowledgeable.
 
Old 11-21-2011, 09:23 PM   #4
philclowes
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Significant - and valid reasons I promise you
 
Old 11-21-2011, 09:26 PM   #5
philclowes
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Quote:
Originally Posted by syg00 View Post
No, that should work. You messed up.
You might find this an interesting site. Look under "Community" for the Linux-390 listserv; very active, very knowledgeable.

Thanks for the link. Yes, I am fairly sure something is amiss with what I have as a boot image. It's trying to figure out what is different between the two images that is difficult to see.

Onwards and upwards!
 
  


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