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| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2011-03-11 20:06:09 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-03-11 20:06:09 +0100 |
| commit | 957c2ec558caff09a3bdf333871fc617830f063d (patch) | |
| tree | 3ab03b18177a7381c511f165411cc00383177824 /Documentation | |
| parent | 03567812d81dd87a810b2bd1e804f4001de03da5 (diff) | |
| download | linux-957c2ec558caff09a3bdf333871fc617830f063d.tar.gz linux-957c2ec558caff09a3bdf333871fc617830f063d.tar.bz2 linux-957c2ec558caff09a3bdf333871fc617830f063d.zip | |
cciss: export resettable host attribute
This attribute, requested by Redhat, allows kexec-tools to know
whether the controller can honor the reset_devices kernel parameter
and actually reset the controller. For kdump to work properly it
is necessary that the reset_devices parameter be honored. This
attribute enables kexec-tools to warn the user if they attempt to
designate a non-resettable controller as the dump device.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci-devices-cciss | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss index 4f29e5f1ebfa..f5bb0a3bb8c0 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss @@ -59,3 +59,15 @@ Kernel Version: 2.6.31 Contact: iss_storagedev@hp.com Description: Displays the usage count (number of opens) of logical drive Y of controller X. + +Where: /sys/bus/pci/devices/<dev>/ccissX/resettable +Date: February 2011 +Kernel Version: 2.6.38 +Contact: iss_storagedev@hp.com +Description: Value of 1 indicates the controller can honor the reset_devices + kernel parameter. Value of 0 indicates reset_devices cannot be + honored. This is to allow, for example, kexec tools to be able + to warn the user if they designate an unresettable device as + a dump device, as kdump requires resetting the device in order + to work reliably. + |