forked from luck/tmp_suning_uos_patched
c267e6e0c8
Add ABI documentation for the /sys/bus/xen-backend sysfs files, including those specific to blkback devices. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
76 lines
2.5 KiB
Plaintext
76 lines
2.5 KiB
Plaintext
What: /sys/bus/xen-backend/devices/*/devtype
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Date: Feb 2009
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KernelVersion: 2.6.38
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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The type of the device. e.g., one of: 'vbd' (block),
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'vif' (network), or 'vfb' (framebuffer).
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What: /sys/bus/xen-backend/devices/*/nodename
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Date: Feb 2009
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KernelVersion: 2.6.38
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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XenStore node (under /local/domain/NNN/) for this
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backend device.
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What: /sys/bus/xen-backend/devices/vbd-*/physical_device
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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The major:minor number (in hexidecimal) of the
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physical device providing the storage for this backend
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block device.
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What: /sys/bus/xen-backend/devices/vbd-*/mode
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Whether the block device is read-only ('r') or
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read-write ('w').
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/f_req
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of flush requests from the frontend.
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/oo_req
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of requests delayed because the backend was too
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busy processing previous requests.
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/rd_req
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of read requests from the frontend.
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/rd_sect
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of sectors read by the frontend.
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/wr_req
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of write requests from the frontend.
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What: /sys/bus/xen-backend/devices/vbd-*/statistics/wr_sect
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Date: April 2011
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KernelVersion: 3.0
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Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Description:
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Number of sectors written by the frontend.
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