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Commit 92931abf authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk
Browse files

Merge branch 'stable/docs-for-3.3' into stable/for-linus-3.3

* stable/docs-for-3.3:
  xen: document backend sysfs files
  xen: document balloon driver sysfs files
parents cfcfc9ec c267e6e0
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What:		/sys/bus/xen-backend/devices/*/devtype
Date:		Feb 2009
KernelVersion:	2.6.38
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                The type of the device.  e.g., one of: 'vbd' (block),
                'vif' (network), or 'vfb' (framebuffer).

What:		/sys/bus/xen-backend/devices/*/nodename
Date:		Feb 2009
KernelVersion:	2.6.38
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                XenStore node (under /local/domain/NNN/) for this
                backend device.

What:		/sys/bus/xen-backend/devices/vbd-*/physical_device
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                The major:minor number (in hexidecimal) of the
                physical device providing the storage for this backend
                block device.

What:		/sys/bus/xen-backend/devices/vbd-*/mode
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Whether the block device is read-only ('r') or
                read-write ('w').

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/f_req
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of flush requests from the frontend.

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/oo_req
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of requests delayed because the backend was too
                busy processing previous requests.

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/rd_req
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of read requests from the frontend.

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/rd_sect
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of sectors read by the frontend.

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/wr_req
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of write requests from the frontend.

What:		/sys/bus/xen-backend/devices/vbd-*/statistics/wr_sect
Date:		April 2011
KernelVersion:	3.0
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
                Number of sectors written by the frontend.
+77 −0
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What:		/sys/devices/system/xen_memory/xen_memory0/max_retry_count
Date:		May 2011
KernelVersion:	2.6.39
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		The maximum number of times the balloon driver will
		attempt to increase the balloon before giving up.  See
		also 'retry_count' below.
		A value of zero means retry forever and is the default one.

What:		/sys/devices/system/xen_memory/xen_memory0/max_schedule_delay
Date:		May 2011
KernelVersion:	2.6.39
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		The limit that 'schedule_delay' (see below) will be
		increased to. The default value is 32 seconds.

What:		/sys/devices/system/xen_memory/xen_memory0/retry_count
Date:		May 2011
KernelVersion:	2.6.39
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		The current number of times that the balloon driver
		has attempted to increase the size of the balloon.
		The default value is one. With max_retry_count being
		zero (unlimited), this means that the driver will attempt
		to retry with a 'schedule_delay' delay.

What:		/sys/devices/system/xen_memory/xen_memory0/schedule_delay
Date:		May 2011
KernelVersion:	2.6.39
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		The time (in seconds) to wait between attempts to
		increase the balloon.  Each time the balloon cannot be
		increased, 'schedule_delay' is increased (until
		'max_schedule_delay' is reached at which point it
		will use the max value).

What:		/sys/devices/system/xen_memory/xen_memory0/target
Date:		April 2008
KernelVersion:	2.6.26
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		The target number of pages to adjust this domain's
		memory reservation to.

What:		/sys/devices/system/xen_memory/xen_memory0/target_kb
Date:		April 2008
KernelVersion:	2.6.26
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		As target above, except the value is in KiB.

What:		/sys/devices/system/xen_memory/xen_memory0/info/current_kb
Date:		April 2008
KernelVersion:	2.6.26
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		Current size (in KiB) of this domain's memory
		reservation.

What:		/sys/devices/system/xen_memory/xen_memory0/info/high_kb
Date:		April 2008
KernelVersion:	2.6.26
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		Amount (in KiB) of high memory in the balloon.

What:		/sys/devices/system/xen_memory/xen_memory0/info/low_kb
Date:		April 2008
KernelVersion:	2.6.26
Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
		Amount (in KiB) of low (or normal) memory in the
		balloon.