[libvirt] [PATCH 7/9] virsh: add virsh manual for setting throttle blkio cgroup

[Gao feng]

Add the manual for the new blkiotune options, --device-read-iops,
--device-write-iops, --device-read-bps, --device-write-bps.

Singed-off-by: Guan Qiang <hzguanqiang at corp.netease.com>
Singed-off-by: Gao feng <gaofeng at cn.fujitsu.com>
---
 tools/virsh.pod | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/tools/virsh.pod b/tools/virsh.pod
index dac9a08..8ecc27c 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1625,8 +1625,12 @@ The guaranteed minimum memory allocation for the guest.
 Specifying -1 as a value for these limits is interpreted as unlimited.
 
 =item B<blkiotune> I<domain> [I<--weight> B<weight>]
-[I<--device-weights> B<device-weights>] [[I<--config>]
-[I<--live>] | [I<--current>]]
+[I<--device-weights> B<device-weights>]
+[I<--device-read-iops> B<device-read-iops>]
+[I<--device-write-iops> B<device-write-iops>]
+[I<--device-read-bps> B<device-read-bps>]
+[I<--device-write-bps> B<device-write-bps>]
+[[I<--config>] [I<--live>] | [I<--current>]]
 
 Display or set the blkio parameters. QEMU/KVM supports I<--weight>.
 I<--weight> is in range [100, 1000]. After kernel 2.6.39, the value
@@ -1639,6 +1643,34 @@ or the value 0 to remove that device from per-device listings.
 Only the devices listed in the string are modified;
 any existing per-device weights for other devices remain unchanged.
 
+B<device-read-iops> is a single string listing one or more device/read_iops
+pairs, int the format of /path/to/device,read_iops,/path/to/device,read_iops.
+Each read_iops is a number which type is unsigned int, value 0 to remove that
+device from per-decice listing.
+Only the devices listed in the string are modified;
+any existing per-device read_iops for other devices remain unchange.
+
+B<device-write-iops> is a single string listing one or more device/write_iops
+pairs, int the format of /path/to/device,write_iops,/path/to/device,write_iops.
+Each write_iops is a number which type is unsigned int, value 0 to remove that
+device from per-decice listing.
+Only the devices listed in the string are modified;
+any existing per-device write_iops for other devices remain unchange.
+
+B<device-read-bps> is a single string listing one or more device/read_bps
+pairs, int the format of /path/to/device,read_bps,/path/to/device,read_bps.
+Each read_bps is a number which type is unsigned long long, value 0 to remove
+that device from per-decice listing.
+Only the devices listed in the string are modified;
+any existing per-device read_bps for other devices remain unchange.
+
+B<device-write-bps> is a single string listing one or more device/write_bps
+pairs, int the format of /path/to/device,write_bps,/path/to/device,write_bps.
+Each write_bps is a number which type is unsigned long long, value 0 to remove
+that device from per-decice listing.
+Only the devices listed in the string are modified;
+any existing per-device write_bps for other devices remain unchange.
+
 If I<--live> is specified, affect a running guest.
 If I<--config> is specified, affect the next boot of a persistent guest.
 If I<--current> is specified, affect the current guest state.
-- 
1.8.3.1