fileid changed

fileid changed

[Jim Rees]

With Benny's pnfs-all-latest kernel of this morning I'm getting this:

NFS: server emc-1 error: fileid changed
fsid 0:14: expected fileid 0x4c1b59f7, got 0x167
NFS: server emc-1 error: fileid changed
fsid 0:14: expected fileid 0x4c891415, got 0x174
NFS: server emc-1 error: fileid changed
fsid 0:14: expected fileid 0x174, got 0x4c891415
NFS: server emc-1 error: fileid changed
fsid 0:14: expected fileid 0x177, got 0x4ce18474
[ followed by many similar lines ]

This happens during test5: read and write of Connectathon basic, pnfs block
layout client, EMC server.  The user process hangs at this point, no oops.
I can provide more details if needed.  This could easily be my screw-up of
course, but I haven't changed anything in my code and I wasn't getting this
with the previous kernel.  So before I dig in I wanted to ask if this rings
a bell for anyone.

Re: fileid changed

[Jim Rees]

Jim Rees wrote:

  With Benny's pnfs-all-latest kernel of this morning I'm getting this:
  
  NFS: server emc-1 error: fileid changed
  fsid 0:14: expected fileid 0x4c1b59f7, got 0x167
  NFS: server emc-1 error: fileid changed
  fsid 0:14: expected fileid 0x4c891415, got 0x174
  NFS: server emc-1 error: fileid changed
  fsid 0:14: expected fileid 0x174, got 0x4c891415
  NFS: server emc-1 error: fileid changed
  fsid 0:14: expected fileid 0x177, got 0x4ce18474
  [ followed by many similar lines ]
  
  This happens during test5: read and write of Connectathon basic, pnfs block
  layout client, EMC server.  The user process hangs at this point, no oops.
  I can provide more details if needed.  This could easily be my screw-up of
  course, but I haven't changed anything in my code and I wasn't getting this
  with the previous kernel.

Sorry, I was mistaken.  I was getting this with the previous kernel as
well.  I'm still interested to know if anyone recognizes this.

Re: fileid changed

[J. Bruce Fields]

On Mon, Nov 15, 2010 at 03:10:00PM -0500, Jim Rees wrote:
> Jim Rees wrote:
> 
>   With Benny's pnfs-all-latest kernel of this morning I'm getting this:
>   
>   NFS: server emc-1 error: fileid changed
>   fsid 0:14: expected fileid 0x4c1b59f7, got 0x167
>   NFS: server emc-1 error: fileid changed
>   fsid 0:14: expected fileid 0x4c891415, got 0x174
>   NFS: server emc-1 error: fileid changed
>   fsid 0:14: expected fileid 0x174, got 0x4c891415
>   NFS: server emc-1 error: fileid changed
>   fsid 0:14: expected fileid 0x177, got 0x4ce18474
>   [ followed by many similar lines ]

Naively, it sounds like the server is returning different fileid's for
getattr's on the same filehandle?  Sounds like a definite server
bug--might be worth looking at a trace to confirm that, though.

--b.

>   
>   This happens during test5: read and write of Connectathon basic, pnfs block
>   layout client, EMC server.  The user process hangs at this point, no oops.
>   I can provide more details if needed.  This could easily be my screw-up of
>   course, but I haven't changed anything in my code and I wasn't getting this
>   with the previous kernel.
> 
> Sorry, I was mistaken.  I was getting this with the previous kernel as
> well.  I'm still interested to know if anyone recognizes this.
> --
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fileid changed

[Jim Rees]

I'm getting fresh reports of "fileid changed" with Benny's latest
pnfs-all-latest.  This is x86_64 4.1 non-pnfs client against EMC Celerra
server.  I'm getting a tcpdump now.  The kernel does have the
nfs_same_file() fix that Trond sent in November.

NFS: server 10.244.76.184 error: fileid changed
fsid 0:15: expected fileid 0x19, got 0x4d0000fb
NFS: server 10.244.76.184 error: fileid changed
fsid 0:15: expected fileid 0x1b, got 0x4d00047c
NFS: server 10.244.76.184 error: fileid changed
fsid 0:15: expected fileid 0x1a, got 0x4d00047c
NFS: server 10.244.76.184 error: fileid changed
fsid 0:15: expected fileid 0x1c, got 0x4d00047f
NFS: server 10.244.76.184 error: fileid changed
fsid 0:15: expected fileid 0x1d, got 0x4d000481