Re: CRITICAL SITUATION - who has seen this Page Check Error problem

In article <5nmbo4$s3n@camel3.mindspring.com>, tarrant@atl.mindspring.com writes >barryleb@atl.mindspring.com (Barry Leb) wrote: > >This is a follow up to what we know so far on this problem. I > >Now the question is where are these page header addresses coming from. <Snip> >Anyone else care to comment on all this? > > I suspect an incompatability with your Logical Volume Manager and Online DSA. There is a known incompatability between ICL's Logical Volume Manager and Online's KAIO. We hit this 3 times and each time it destroyed our root filesystem, Yes! the root (/) we rebuilt the box three times. Finally we set the environment variable KAIOOFF=1 before starting the engine and the problems went away. This was in DSA 7.11, upgrades to 7.12 and 7.13 have not given us any more problems. I would advise shutting down Online, setting KAIOOFF=1 and restarting the engine. Running onstat -g ath should then show NO kaio threads. Then run the following :- oncheck -cr (check reserved pages) oncheck -ce (check extents) oncheck -cc <database name> (Check systen catalogs for the database) oncheck -cID <database name> (check all index and data pages - SLOW!!) Certainly run the first 3 and repeat the -cc option for each database you have... Sounds like an interesting problem, hope this helps. PS I'm getting really sad, can remember all the oncheck -c options without prompting! I've run them too many times...that and being able to install SE with out reference to the manuals means I've spent too long indoors!! -- David Williams