[Bug 487533] New: [RHEL5]: virt-top doesn't show disk transfer statistics

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Summary: [RHEL5]: virt-top doesn't show disk transfer statistics

https://bugzilla.redhat.com/show_bug.cgi?id=487533

           Summary: [RHEL5]: virt-top doesn't show disk transfer
                    statistics
           Product: Fedora EPEL
           Version: el5
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: medium
          Priority: low
         Component: virt-top
        AssignedTo: rjones at redhat.com
        ReportedBy: clalance at redhat.com
         QAContact: extras-qa at fedoraproject.org
                CC: rjones at redhat.com, fedora-virt-maint at redhat.com,
                    fedora-ocaml-list at redhat.com
    Classification: Fedora
    Target Release: ---


Description of problem:
Despite the work that went into RHEL-5.3 to show disk transfer statistics of
blktap devices, virt-top is still not showing them.  That is, if I start up
virt-top on my dom0, I see output similar to:

virt-top 11:07:03 - x86_64 8/8CPU 2000MHz 15102MB
17 domains, 16 active, 4 running, 12 sleeping, 0 paused, 1 inactive D:0 O:0 X:0
CPU: 0.0%  Mem: 12838 MB (11813 MB by guests)

   ID S RDRQ WRRQ RXBY TXBY %CPU %MEM    TIME   NAME                            
    0 R                      0.0  6.0  52:14.09 Domain-0
   27 S                      0.0  6.0   1:50.03 f10pv_i386
   26 R                      0.0  5.0   2:21.34 f10pv_x86_64
   13 S                      0.0  5.0  10:15.87 f8pv_i386
   14 S                      0.0  5.0  11:21.37 f8pv_x86_64
   11 S                      0.0  5.0  22:22.51 f9pv_i386
   12 S                      0.0  5.0  20:35.55 f9pv_x86_64
   29 S                      0.0  5.0   2:30.98 rhel3fv_i386
   37 R                      0.0  5.0   2:42.97 rhel4fv_i386
   38 S                      0.0  5.0   0:48.74 rhel4fv_x86_64
    7 S                      0.0  5.0   6:41.64 rhel4pv_i386
    8 S                      0.0  5.0  13:03.53 rhel4pv_x86_64
   21 S                      0.0  5.0  27:49.61 rhel5fv_i386
   36 R                      0.0  5.0   2:46.24 rhel5fv_x86_64
   39 S                      0.0  5.0   0:38.62 rhel5pv_i386
   40 S                      0.0  5.0   0:37.07 rhel5pv_x86_64

But the RDRQ and WRRQ columns are always blank, for both FV and PV guests.

I'm not quite sure if this is a libvirt problem or a problem with virt-top
itself, but I thought I'd start with virt-top and we can go from there.

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