Re: Assert Failed: Buffer modified in inconsistent chunk

Richard W Sinyem wrote: > > Dear People, > > We are running I-Online 7.10.UD1 on HP-UX 10.01 and recently encountered the following error/problems: > [SNIP] > Could someone kindly explain the possible causes of the chunk to be inconsistent as we have > perform the oncheck a few days earlier before this incident. Furthermore, after restoration (and loss > of some data) the database is back to normal order. Additional preventive steps are also welcomed. One possibility is that someone added a new chunk that was a link to a device/file that was already being used by another chunk. Ospaces and onmonitor only check the filename (ie linkname) and do not follow the link to the FS/inode or Major/Minor device number to avoid overlap and clashes. This can also happen if you have multiple instances on the same machine since IDS has no way of checking between different instances. Since you have already restored the evidence is probably gone that this was the cause of the damage unless the links still exist. In this case you still have a problem and the corruption will happen again, indeed it actually already has, by restoring the original chunk's data you have damaged the new chunk. If you have this problem get my utils_ak submission to IIUG software repository which has an onspaces wrapper script to prevent this. Art S. Kagel