diff options
Diffstat (limited to 'Documentation/scsi')
| -rw-r--r-- | Documentation/scsi/hpsa.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/scsi/hpsa.txt b/Documentation/scsi/hpsa.txt index 880c085b951b..891435a72fce 100644 --- a/Documentation/scsi/hpsa.txt +++ b/Documentation/scsi/hpsa.txt @@ -45,6 +45,7 @@ HPSA specific entries in /sys /sys/class/scsi_host/host*/rescan /sys/class/scsi_host/host*/firmware_revision + /sys/class/scsi_host/host*/resettable /sys/class/scsi_host/host*/transport_mode the host "rescan" attribute is a write only attribute. Writing to this @@ -66,6 +67,17 @@ HPSA specific entries in /sys or "simple" mode. This is controlled by the "hpsa_simple_mode" module parameter. + The "resettable" read-only attribute indicates whether a particular + controller is able to honor the "reset_devices" kernel parameter. If the + device is resettable, this file will contain a "1", otherwise, a "0". This + parameter is used by kdump, for example, to reset the controller at driver + load time to eliminate any outstanding commands on the controller and get the + controller into a known state so that the kdump initiated i/o will work right + and not be disrupted in any way by stale commands or other stale state + remaining on the controller from the previous kernel. This attribute enables + kexec tools to warn the user if they attempt to designate a device which is + unable to honor the reset_devices kernel parameter as a dump device. + HPSA specific disk attributes: ------------------------------ |