[pnfs] pNFS 2.6.17

[Dean Hildebrand]

Marc Eshel wrote:
> I just tried to run pNFS 2.6.17 and it did not work. Did any one got it to 
> work with the file protocol? 
> I tried mount and read, it did get the device list but it never requested 
> the layout from the MDS it was just hang.
>   
I'm experiencing the exact same problem when running file layout over pvfs2.

Here is the stuck thread:
Jul 19 11:23:25 foufoune kernel: Call Trace:
Jul 19 11:23:25 foufoune kernel:  <c0465b9b> io_schedule+0x26/0x30  
<c0143b99> mempool_alloc+0xc5/0xc7
Jul 19 11:23:25 foufoune kernel:  <c01d6191> 
nfs_writedata_alloc+0x17/0x96  <c01d7afd> nfs_flush_multi+0x76/0x16e
Jul 19 11:23:25 foufoune kernel:  <c01d7dfc> pnfs_flush_one+0xbd/0xf7  
<c01d6b04> nfs_flush_list+0x90/0xe4
Jul 19 11:23:25 foufoune kernel:  <c01d6bad> nfs_flush_inode+0x55/0x61  
<c01d85dc> nfs_writepages+0xa4/0x153
Jul 19 11:23:25 foufoune kernel:  <c0146b9f> do_writepages+0x26/0x3f  
<c01407eb> __filemap_fdatawrite_range+0x5b/0x67
Jul 19 11:23:25 foufoune kernel:  <c0141789> 
filemap_fdatawrite+0x26/0x28  <c015fd6b> do_fsync+0x4b/0x9c
Jul 19 11:23:25 foufoune kernel:  <c015fddc> __do_fsync+0x20/0x2f  
<c015fe0a> sys_fsync+0xd/0xf
Jul 19 11:23:25 foufoune kernel:  <c0103927> syscall_call+0x7/0xb

> On another subject, just before moving to 2.6.17 I applied the 1MB 
> read/write patch from Greg Banks at it seemed to work fine, so if know one 
> objects I would like to apply it to 2.6.17. One problem that I saw testing 
> with 1MB read size is that the client ignored the stripe unite that the 
> MDS specified in the layout stripe unit and used the 1MB read size which 
> is wrong. 
>
>   
I'm obviously in support of this.  Since we are the only server users....
I would like to be able to separate out the pnfs changes in cvs though 
from other changes.  How can we do this? 
Dean
> Marc. 
>
>
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>   

-- 
Dean Hildebrand
Ph.D. Candidate
University of Michigan