There has been some enhancements to the FLASHCOPY portion of z/VM since 0801. I'd upgrade it to the latest (which is a relatively simple task) and see if that improves your situation.
Frank M. Ramaekers Jr. ________________________________ From: The IBM z/VM Operating System [mailto:[email protected]] On Behalf Of Boukhemis, Waheb Sent: Monday, October 11, 2010 2:48 PM To: [email protected] Subject: z/Linux Read Only Disk We are currently running z/VM 5.4 at 801 CPLEVEL. We have 12 Linux servers running Red Hat. Once a week, we use DFDSS on the z/OS side (z/OS 1.9) to flash copy all the z/VM disks and then copy the flash copied volumes to tape. This process had been working fine for 18 months. We never put any maintenance on z/VM side, but a lot of maintenance had been applied to the z/Linux Servers. About a month ago, we started getting a read only disk error on the z/Linux disk whenever we ran the flash copy. We then wrote scripts to shutdown all the z/Linux servers before doing the flash copy, which only takes about 17 seconds, but the problem still persists. Does anybody have any idea? Thanks, _____________________________________________________ This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at [email protected].
