On Sat, Dec 18, 2004 at 07:23:56PM +0000, Alasdair G Kergon wrote: > On Fri, Dec 17, 2004 at 10:17:15PM +0100, Arno Wagner wrote: > > The data read from /dev/hdX does not reflect the write to /dev/mapper/xx > > or only after a lot of data ( > main memory) has been written. Waiting > > does not help. (After 1 hour still no change.) > > I've seen similar issues in 2.6 for a long time with loop devices > I use for testing needing to be flushed explicitly. > (blockdev --flushbufs) > > I've not managed to find time to investigate yet. > O.K., so it is a problem and a known one. I can wait and use "blockdev --flushbufs" in the meantime. Thanks for the hint. I assume writes to the mapped device actually reach the physical device, since otherwise people should have seen problems with filesystems on mapper devices. Arno -- Arno Wagner, Dipl. Inform., CISSP --- CSG, ETH Zurich, wagner@xxxxxxxxxxxxxx GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
