[S390] cio: improve error recovery for internal I/Os

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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>

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Peter Oberparleiter 2009-12-07 12:51:40 +01:00 • committed by Martin Schwidefsky

parent 7a8ad1001c

commit de1b04388f

4 changed files with 7 additions and 6 deletions

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7

drivers/s390/cio/ccwreq.c

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2

drivers/s390/cio/device_id.c

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2

drivers/s390/cio/device_pgid.c

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2

drivers/s390/cio/io_sch.h

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