>>> On 11/23/2010 at 04:48 AM, Florian Bilek <[email protected]> wrote: > Nevertheless I suspect a problem in chccwdev > or in the driver as it should not corrupt the content of the disk when it > goes ffline.
The chccwdev process does not guarantee that all buffered I/Os are written to disk first. I had a customer open a problem with this just recently. The only guarantee we could arrive at was to use the "oflag=sync" parameter on the dd command. Someone else commented that this kills performance, but not so much if you use a blocksize in the megabyte(s) range, bs=1M, for example. Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
