Not able to redirect pvscan output on OEL


 
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Old 07-04-2008
Not able to redirect pvscan output on OEL

Hi,

I'm not able to redirect output of pvscan and vgscan commands to a file in Oracle Enterprise Linux.

Please suggest something.

Thanks

Mayank
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Mirror/redirect action in tc(8) 				       Linux					   Mirror/redirect action in tc(8)

NAME
mirred - mirror/redirect action SYNOPSIS
tc ... action mirred DIRECTION ACTION [ index INDEX ] dev DEVICENAME DIRECTION := { ingress | egress } ACTION := { mirror | redirect } DESCRIPTION
The mirred action allows packet mirroring (copying) or redirecting (stealing) the packet it receives. Mirroring is what is sometimes referred to as Switch Port Analyzer (SPAN) and is commonly used to analyze and/or debug flows. OPTIONS
ingress egress Specify the direction in which the packet shall appear on the destination interface. mirror redirect Define whether the packet should be copied (mirror) or moved (redirect) to the destination interface. index INDEX Assign a unique ID to this action instead of letting the kernel choose one automatically. INDEX is a 32bit unsigned integer greater than zero. dev DEVICENAME Specify the network interface to redirect or mirror to. EXAMPLES
Limit ingress bandwidth on eth0 to 1mbit/s, redirect exceeding traffic to lo for debugging purposes: # tc qdisc add dev eth0 handle ffff: ingress # tc filter add dev eth0 parent ffff: u32 match u32 0 0 action police rate 1mbit burst 100k conform-exceed pipe action mirred egress redirect dev lo Mirror all incoming ICMP packets on eth0 to a dummy interface for examination with e.g. tcpdump: # ip link add dummy0 type dummy # ip link set dummy0 up # tc qdisc add dev eth0 handle ffff: ingress # tc filter add dev eth0 parent ffff: protocol ip u32 match ip protocol 1 0xff action mirred egress mirror dev dummy0 Using an ifb interface, it is possible to send ingress traffic through an instance of sfq: # modprobe ifb # ip link set ifb0 up # tc qdisc add dev ifb0 root sfq # tc qdisc add dev eth0 handle ffff: ingress # tc filter add dev eth0 parent ffff: u32 match u32 0 0 action mirred egress redirect dev ifb0 SEE ALSO
tc(8), tc-u32(8) iproute2 11 Jan 2015 Mirror/redirect action in tc(8)

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