tree 9ecf558a0e3d128534b56200b0f411aab315fc0f
parent 55d3a85cd2fa3274a6dfa0901a3be342b433bfa0
author Stefan Haberland <stefan.haberland@de.ibm.com> 1354106618 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1354286444 +0100

s390/dasd: add safe offline interface

The regular behavior of the DASD device driver when setting a device
offline is to return all outstanding I/O as failed. This behavior is
different from that of other System z operating systems and may lead
to unexpected data loss. Adding an explicit 'safe' offline function
will allow customers to use DASDs in the way they expect them to work.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>