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Testlvs crash ipvsadm



This is my normal output for ipvsadm

IP Virtual Server version 0.9.14 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn
TCP  virtual09.mydomains.it:www wlc
  -> real02.mydomains.it:www    Route   1      0          0
  -> real04.mydomains.it:www    Route   1      0          0
  -> real03.mydomains.it:www    Route   1      0          0
TCP  virtual08.mydomains.it:www wlc
  -> real04.mydomains.it:www    Route   1      0          0
........
TCP  virtual02.mydomains.it:www wlc
  -> real02.mydomains.it:www    Route   1      0          0
  -> real03.mydomains.it:www    Route   1      0          0
  -> real04.mydomains.it:www    Route   1      0          0
TCP  virtual01.mydomains.it:www wlc
  -> real04.mydomains.it:www    Route   1      0          0
  -> real02.mydomains.it:www    Route   1      0          0
  -> real03.mydomains.it:www    Route   1      0          0

I have downloaded run
http://www.linuxvirtualserver.org/julian/testlvs-0-1.tar.gz then i've run it
with the script:
./testlvs 123.123.123.111:80 -tcp -srcnet 10.3.0.1  -srcnum 254 -packets 100
....
./testlvs 123.123.123.999:80 -tcp -srcnet 10.3.0.1  -srcnum 254 -packets 100
where 123.123.123.111-999 are virtual server IP's

First time and second time all OK, but third time ipvsadm delete all real
servers ;
 ipvsadm -l return this output and refuse all -a option for about 6 minute:

IP Virtual Server version 0.9.14 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn
TCP  virtual08.mydomains.it:www wlc
TCP  virtual09.mydomains.it:www wlc
TCP  virtual03.mydomains.it:www wlc
TCP  virtual01.mydomains.it:www wlc

After this it seems that all return to work fine.
Any idea?

Andrea






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