Stefan Haberland 3bc9fef9cc s390/dasd: check count address during online setting ... A common way to prepare a z/VM mini disk is to format the real device with a z/VM tool like CPFMTXA and then define a mini disk that excludes the first cylinder, i.e. the cylinder 0 of the virtual disk is located at cylinder 1 of the real device. The DASD device driver will recognize such a mini disk as formatted, as the uniform record layout on the disk matches that of an LDL formatted device. However, the cylinder value in the 'count' field of the ECKD records matches the geometry of the real device, and not that of the mini disk, so I/O requests will fail with 'record not found' errors. To make the mini disk usable, it needs to be formatted with a tool like dasdfmt. To enable tools like distribution installation tools to recognize this situation, the DASD device driver should report such a mini disk as 'not formatted'. To this end we need to extend the device recognition code to check not just for proper record sizes, but also for proper cylinder/head/record values. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Reviewed-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2012-09-26 15:45:26 +02:00
..
block	s390/dasd: check count address during online setting	2012-09-26 15:45:26 +02:00
char	drivers/s390/char/monreader.c: fix error return code	2012-09-26 15:45:26 +02:00
cio	s390: add uninitialized_var() to suppress false positive compiler warnings	2012-09-26 15:45:23 +02:00
crypto	s390/ap_bus: add missing ifdef	2012-09-26 15:45:19 +02:00
kvm	KVM updates for the 3.6 merge window	2012-07-24 12:01:20 -07:00
net	s390/sysinfo,stsi: change return code handling	2012-09-26 15:45:12 +02:00
scsi	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
Makefile	[S390] split/move machine check handler code	2009-03-26 15:24:10 +01:00