path: root/arch/s390/hypfs/hypfs_diag.c
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authorCornelia Huck <cornelia.huck@de.ibm.com>2006-07-12 16:40:19 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-07-12 16:40:19 +0200
commit7e560814de1972e1bfc780616841d7a0032ca467 (patch)
treef8d544454b54a0167f757cc945a3e29165f211f8 /arch/s390/hypfs/hypfs_diag.c
parent[S390] xpram module parameter parsing. (diff)
[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 'arch/s390/hypfs/hypfs_diag.c')
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