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== Comment: #0 - Peter Schmidt <PSCHMIDT@xxxxxxxxxx> - 2016-03-01 04:41:23 ==
---Problem Description---
eckd dasd can not be set online when using "use_diag=1" mode
 
Contact Information = pschmidt@xxxxxxxxxx 
 
---uname output---
Linux s3515023 4.4.0-7-generic #22-Ubuntu SMP Thu Feb 18 21:13:28 UTC 2016 s390x s390x s390x GNU/Linux
 
Machine Type = s390 z/VM Guest 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 try to set ldl formatted eckd dasd online when use_diag is enabled
use ldl formatted disk <dasd>
load driver    "modprobe dasd_diag_mod"
set dasd offline "chccwdev -d 0.0.<dasd>"
enable diag mode for this dasd "/sys/bus/ccw/devices/0.0.<dasd># echo 1 > use_diag"
set dasd online "chccwdev -e 0.0.<dasd>"

ERROR appears 
root@xxxxxx:/sys/bus/ccw/devices/0.0.<dasd># chccwdev -e 0.0.<dasd>
Setting device 0.0.<dasd> online
Failed (Operation not supported)
Failed

 
Stack trace output:
 no
 
Oops output:
 no
 
System Dump Info:
  The system is not configured to capture a system dump.
 
Device driver error code:
 -95

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Andy Whitcroft (apw)
         Status: New


** Tags: architecture-s39064 bot-comment bugnameltc-138071 severity-medium targetmilestone-inin1604
-- 
eckd dasd can not be set online when using "use_diag=1" mode
https://bugs.launchpad.net/bugs/1553171
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