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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-07-12 18:40:19 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-07-12 18:40:19 +0400 |
| commit | 7e560814de1972e1bfc780616841d7a0032ca467 (patch) | |
| tree | f8d544454b54a0167f757cc945a3e29165f211f8 /drivers/s390/cio/css.h | |
| parent | 5c898ba9d4b6c14fdd367b96e3641c2508b4a4a9 (diff) | |
| download | linux-7e560814de1972e1bfc780616841d7a0032ca467.tar.xz | |
[S390] path grouping and path verifications fixes.
1. Multipath devices for which SetPGID is not supported are not handled well.
Use NOP ccws for path verification (sans path grouping) when SetPGID is not
supported.
2. Check for PGIDs already set with SensePGID on _all_ paths (not just the
first one) and try to find a common one. Moan if no common PGID can be
found (and use NOP verification). If no PGIDs have been set, use the css
global PGID (as before). (Rationale: SetPGID will get a command reject if
the PGID it tries to set does not match the already set PGID.)
3. Immediately before reboot, issue RESET CHANNEL PATH (rcp) on all chpids. This
will remove the old PGIDs. rcp will generate solicited CRWs which can be
savely ignored by the machine check handler (all other actions create
unsolicited CRWs).
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.h')
| -rw-r--r-- | drivers/s390/cio/css.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 15f7f7cb0ec2..8aabb4adeb5f 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -100,7 +100,7 @@ struct ccw_device_private { struct qdio_irq *qdio_data; struct irb irb; /* device status */ struct senseid senseid; /* SenseID info */ - struct pgid pgid; /* path group ID */ + struct pgid pgid[8]; /* path group IDs per chpid*/ struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */ struct work_struct kick_work; wait_queue_head_t wait_q; |