Hello eric,
Friday, April 20, 2007, 4:01:46 PM, you wrote:
ek> On Apr 18, 2007, at 9:33 PM, Robert Milkowski wrote:
>> Hello Robert,
>>
>> Thursday, April 19, 2007, 1:57:38 AM, you wrote:
>>
>> RM> Hello nfs-discuss,
>>
>> RM> Does anyone have a dtrace script (or any other means) to
>> track which
>> RM> files are open/read/write (ops and bytes) by nfsd? To make
>> things
>> RM> little bit harder lets assume that local storage in on zfs, nfsd
>> RM> server using nfsv3 and system is S10U3.
>>
>> RM> The script would distinguish between cache read and disk read.
>>
>> RM> So something like:
>>
>> RM> ./nfsd_file.d
>>
>> RM> CLIENT_IP OPERATION BYTES TYPE FILE
>> RM> X.X.X.X READ3 32768 logical /nfs/d1000/fileA
>>
>> RM> ...
>>
>>
>>
>> RM> and something like:
>>
>> RM> ./nfsd_file_summ.d 100s
>>
>> RM> CLIENT_IP OPERATION OPS BYTES TYPE FILE
>> RM> X.X.X.X READ3 230 5MB logical /nfs/d1000/
>> fileA
>> RM> X.X.X.X READ3 15 1MB physical /nfs/d1000/
>> fileA
>>
>> RM> ...
>>
>> RM>
>> RM>
>> RM>
>>
>>
>> Looks like vopstat and rfileio from DTrace toolkit is what I'm looking
>> for (with some modifications)
>>
ek> very cool, would you mind posting your dscript when you get it working?
ek> eric
Those scripts are from DTraceToolkit!
I've just make some simple modifications like parameterized frequency,
total summary, ...
As I see Brendan hooks into proper VOP operations.
The question however is why if I want to use dtrace io provider with
zfs + nfsd I don't get file names from args[2].fi_pathname?
Perhaps fsinfo::: could help but it's not on current s10 - I hope it
will be in U4 as it looks that it works with zfs (without manually
looking into vnodes, etc.):
bash-3.00# dtrace -n
fsinfo::fop_read:read'{trace(args[0]->fi_pathname);trace(arg1);}'|grep -v
unknown
dtrace: description 'fsinfo::fop_read:read' matched 1 probe
CPU ID FUNCTION:NAME
0 65495 fop_read:read /usr/bin/cat
8
0 65495 fop_read:read /usr/bin/cat
52
0 65495 fop_read:read /usr/bin/cat
224
0 65495 fop_read:read /usr/bin/cat
17
0 65495 fop_read:read /lib/ld.so.1
52
0 65495 fop_read:read /lib/ld.so.1
160
0 65495 fop_read:read /home/milek/hs_err_pid23665.log
8192
0 65495 fop_read:read /home/milek/hs_err_pid23665.log
3777
0 65495 fop_read:read /home/milek/hs_err_pid23665.log
0
^Cbash-3.00#
/home is on zfs.
Looks like fsinfo::: should work properly with nfsd + zfs!
--
Best regards,
Robert mailto:[EMAIL PROTECTED]
http://milek.blogspot.com
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