Hello Matty,

Wednesday, May 31, 2006, 10:46:29 PM, you wrote:

M> On Wed, 31 May 2006, Robert Milkowski wrote:

>> Hello zfs-discuss,
>>
>>  I noticed on a nfs server with ZFS that even with atime set to off
>>  and clients only reading data (almost 100% reads - except some
>>  unlinks()) I still can see some MB/s being written according to
>>  zpool iostat. What could be the couse? How can I see what is
>>  actually being written by ZFS (what files, metadata, etc.)?

M> For file/block I/O, the DTraceToolkit's iosnoop and rwsnoop scripts can
M> be super useful. Metadata might be a bit trickier to locate, since it is
M> file system dependent. Anyone know if there is a filestat utility for ZFS?

I don't remember how these scripts gather data but I suspect it won't
work in this case (nfsd doesn't use standard IO syscalls, etc.).
Anyway I will look at it.

-- 
Best regards,
 Robert                            mailto:[EMAIL PROTECTED]
                                       http://milek.blogspot.com

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