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(parent: 7a8ad10) | patch
[S390] cio: improve error recovery for internal I/Os
authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Mon, 7 Dec 2009 11:51:40 +0000 (12:51 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Mon, 7 Dec 2009 11:51:33 +0000 (12:51 +0100)
commitde1b04388f63cbddf91d9f6c50c29be7232881ca
tree2a2500ab1093bb77b81e84ae56ab3aae1501c52atree | snapshot (tar.gz zip)
parent7a8ad1001c51bba0507ee08cb4323d8ddcb07c70commit | diff
[S390] cio: improve error recovery for internal I/Os

Improve error recovery for internal I/Os by repeating each I/O
256 times per path to cope with long-running non-permanent error
conditions. Also retry each path twice to cope with link flapping,
i.e. single paths becoming unavailable in the order in which they
are tried.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/cio/ccwreq.c diff | blob | blame | history
drivers/s390/cio/device_id.c diff | blob | blame | history
drivers/s390/cio/device_pgid.c diff | blob | blame | history
drivers/s390/cio/io_sch.h diff | blob | blame | history