Hello All,

Has anyone run into a situation where the zLinux OS disk has become READ-

ONLY access?  We are running z/Linux under z/VM 5.4 Redhat 5.4.

My zLinux Admin were doing compares between the production environment 

versus the Test D/R environment and noticed it.  He issued the following 

on the prod zLinux guest environment:

# mount -o remount,rw /dev/VolGroup01/LogVol00
mount: block device /dev/VolGroup01/LogVol00 is write-protected, mounting
 
read-only

Since we are testing our D/R process at the moment for the z/VM LPAR we 

are unsure at this point whether that is a contributing factor.  It shoul
d 
not be but we can't rule it out.  We paused our PPRC/Global mirroring fro
m 
the z/OS side before starting the D/R activities to perform recovery of 

the z/VM & z/Linux.  The problem was found while in the middle of 
verifying/comparing environments on the zLinux side.  I can link to the 

minidisk that is used to IPL that zLinux guest and it shows R/W when I 

issue Q LINKS.   All other minidisks owned by that zLinux guest are R/W a
s 
well.  From my perspective (z/VM) all looks good.

Any input would be appreciated, if anything to rule out that PPRC/GM woul
d 
have contributed to this.

Thanks.
Steve.

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