Re: PROBLEM: knfsd misses occasional writes (w/ WORKAROUND)

Re: PROBLEM: knfsd misses occasional writes (w/ WORKAROUND)

[Sverker Wiberg]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=us-ascii, Size: 1291 bytes --]

Sverker Wiberg wrote:

> Over here, we started to log the conversations, and saw the client
> opening a file, writing 272 bytes into it (one write), and then closing
> it, with the server replying full success all the time. printk()'s in
> knfsd and the vfs's generic_write() also reported that 272 bytes had
> been successfully written. Yet the file was truncated.
> 
> We switched from soft to hard mount: It didn't help. We are now
> experimenting with disabling SCSI's disconnect/reconnect feature. Are
> there any more straws to grasp at?

With one single knfsd thread running, the problem went away (for a price
in performance). This seems to indicate there is some kind of race
between the knfsd threads. 

/Sverker
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

_______________________________________________________________

Hundreds of nodes, one monster rendering program.
Now that’s a super model! Visit http://clustering.foundries.sf.net/
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs