for Chris Mason ( iowatcher graphs)

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Hello. Sorry for writing to btrfs mailing list, but personal mail
reject my message.
Saying "
<chris.mason@xxxxxxxxxxxx>: host 10.101.1.19[10.101.1.19] said: 554 5.4.6 Hop
    count exceeded - possible mail loop (in reply to end of DATA command)

Final-Recipient: rfc822; chris.mason@xxxxxxxxxxxx
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Spam-&-Virus-Firewall; host 10.101.1.19[10.101.1.19] said:
    554 5.4.6 Hop count exceeded - possible mail loop (in reply to end of DATA
    command)
"
My question is:
I'm try to see what happening when virtual machine write to
disk and run blktrace from dom0 like this  blktrace -w 60 -d
/dev/disk/vbd/21-920 -o - > test.trace

/dev/disk/vbd/21-920 is the software raid contains 2 lv volumes , each
lv volume created in big srp attached disk

Inside vm i try to do some work via fio:
[global]
rw=randread
size=128m
directory=/tmp
ioengine=libaio
iodepth=4
invalidate=1
direct=1

[bgwriter]
rw=randwrite
iodepth=32

[queryA]
iodepth=1
ioengine=mmap
direct=0
thinktime=3

[queryB]
iodepth=1
ioengine=mmap
direct=0
thinktime=5

[bgupdater]
rw=randrw
iodepth=16
thinktime=40
size=128m

After that i try to get graph like iowatcher -t test.trace -o trace.svg
But svg contains unreadable images. What i doing wrong and how can i fix that?
svg looks like http://62.76.182.4/trace.svg

Thank you for good tools !

-- 
Vasiliy Tolstov,
e-mail: v.tolstov@xxxxxxxxx
jabber: vase@xxxxxxxxx
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