Re: VxFS: header info at beginning of drives?

Cosmo Lee wrote: > > We are using the standard VxFS file system that comes w/ Unixware 2.1 > Recently we added some drives for our Informix Online databases. Very > soon after adding tables to raw spaces on the drives we started to see > corruption to various tables and indexes. > > We did not add any offset to the table spaces at the beginning of the > drives to skip any possible drive header info. I was wondering if VxFS > writes disk information at the beginning of the drives and if this might > have caused the problem with corruption. > > If VxFS does write header info at the beginning of a drive, how much > offset should I allow? > > Thanks for any help. VxFS doesn't do this unless the device is a VxFS filesystem, in which case, don't do that... I assume what you really mean is that you have On-Line Data Manager and the disks are part of a Volume-Group. In this case, if you really want the disks to be used raw, don't make them part of a Volume-Group. Otherwise, you must create a Logical-Volume and use the device associated with the Logical-Volume, not the raw disk drive. -- Christopher J. Calabrese Lab System Architect (Consultant) Hewlett Packard Engineering Services Group cjc@fpk.hp.com