Re: how to parse the 64byte NFSv3 file handle

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



At 04:56 AM 5/19/2008, Benny Halevy wrote:
>On May. 19, 2008, 11:14 +0300, xing jing <xingjing@xxxxxxxxxx> wrote:
>> recently, I want to get some information (like file access patten)
>> from a trace of NFS client. The simplest way may be parse the file
>> handle to get the file ino and directory ino, but I don't know how to
>> get them from the 64 of 16 hexadecimal. Can you tell me how to parse
>> file handle to get useful information, thanks very much.
>
>That file handle contents are opaque to the client so you'd
>need to have the server's code or reverse engineer its
>structure.

Wireshark understands the format of many NFS server filehandles. You
can simply zoom-in on the filehandle in the details pane to see much of
this. Alternatively, you can look back in the trace to find the LOOKUP
or READDIR/READDIRPLUS to find the mapping between name and
filehandle.

By the way, not all filehandles are 64 bytes. That, too, is a server-specific
choice.

Tom.

--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux