topic Re: SHADOWING-0004 in Operating System - OpenVMS

SHADOWING-0004

Willem Grooters — Thu, 24 Sep 2009 09:39:32 GMT

Just received the announcement of VMS83A_SHADOWING-V0400, ECO Kit Release.

One of the problems states:

1. Mount a shadow set with 3 or 6 member( no HBMMpolicy)
2. Create 6 minicopy bitmaps by dismounting themembers & adding them again after running init.
3. Dismount the shadow set. Now the 6 minicopy bitmaps will show "dmt" in "percent populated" field. Mount the shadow set again with all members and with " /pol=minicopy " qualifier, the system will crash.

MIND THE NUMBERS.

I thought a 6-member shadow set is a 8.4 issue, so wouldn't this couse a problem on an 8.3 machine (What happens to my NDA with this announcement :))

Re: SHADOWING-0004

Volker Halle — Thu, 24 Sep 2009 13:39:18 GMT

Willem,

if this would be a backport of a problem seen during V8.4 development, the text may be the one from the original problem report.

According to the text, the problem can be seen both with 3 and 6 (V8.4 only) shadowset members. The number '6' for the mini-copy bitmaps is not related to any V8.4 feature.

The planned features for the upcomfing OpenVMS V8.4 fieldtest is 'public information' by now:

http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801/?jumpid=reg_R1002_USEN&ciid=66a2aea9e2f73210VgnVCM100000a360ea10RCRD

Volker.

Re: SHADOWING-0004

John Gillings — Thu, 24 Sep 2009 22:30:29 GMT

Willem,

I thought this was V8.4 too, but maybe it's made its way into a backport? Simple to test, just install the patch and attempt to add a 4th member into a shadow set. Worst case it will say no, and it might even work! :-)

Re: SHADOWING-0004

Willem Grooters — Tue, 24 Nov 2009 14:30:42 GMT

Just a remark...