linux-stable/drivers/s390/scsi
Steffen Maier 43f60cbd56 [SCSI] zfcp: No automatic port_rescan on events
In FC fabrics with large zones, the automatic port_rescan on incoming ELS
and any adapter recovery can cause quite some traffic at the very same
time, especially if lots of Linux images share an HBA, which is common on
s390. This can cause trouble and failures. Fix this by making such port
rescans dependent on a user configurable module parameter.

The following unconditional automatic port rescans remain as is:
On setting an adapter online and
on manual user-triggered writes to the sysfs attribute port_rescan.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-24 12:11:02 +04:00
..
Makefile [SCSI] zfcp: Move code for managing zfcp_unit devices to new file 2010-09-16 22:54:15 -04:00
zfcp_aux.c [SCSI] zfcp: restore refcount check on port_remove 2012-09-24 12:11:02 +04:00
zfcp_ccw.c [SCSI] zfcp: No automatic port_rescan on events 2012-09-24 12:11:02 +04:00
zfcp_cfdc.c [SCSI] zfcp: remove invalid reference to list iterator variable 2012-09-24 12:11:02 +04:00
zfcp_dbf.c [SCSI] zfcp: Do not wakeup while suspended 2012-09-24 12:11:01 +04:00
zfcp_dbf.h [SCSI] zfcp: Do not wakeup while suspended 2012-09-24 12:11:01 +04:00
zfcp_def.h [SCSI] zfcp: restore refcount check on port_remove 2012-09-24 12:11:02 +04:00
zfcp_erp.c [SCSI] zfcp: No automatic port_rescan on events 2012-09-24 12:11:02 +04:00
zfcp_ext.h [SCSI] zfcp: No automatic port_rescan on events 2012-09-24 12:11:02 +04:00
zfcp_fc.c [SCSI] zfcp: No automatic port_rescan on events 2012-09-24 12:11:02 +04:00
zfcp_fc.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
zfcp_fsf.c [SCSI] zfcp: No automatic port_rescan on events 2012-09-24 12:11:02 +04:00
zfcp_fsf.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
zfcp_qdio.c [SCSI] zfcp: Bounds checking for deferred error trace 2012-09-24 12:11:01 +04:00
zfcp_qdio.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
zfcp_reqlist.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
zfcp_scsi.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
zfcp_sysfs.c [SCSI] zfcp: restore refcount check on port_remove 2012-09-24 12:11:02 +04:00
zfcp_unit.c [SCSI] zfcp: restore refcount check on port_remove 2012-09-24 12:11:02 +04:00