• Steffen Maier's avatar
    [SCSI] zfcp: No automatic port_rescan on events · 43f60cbd
    Steffen Maier authored
    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: default avatarSteffen Maier <maier@linux.vnet.ibm.com>
    Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
    43f60cbd
zfcp_fsf.c 68.1 KB