[mythtv-users] Differing File Sizes between FE and BE

[James Oltman]

On Wed, Oct 8, 2008 at 10:21 PM, James Oltman <cnlibmyth at gmail.com> wrote:

> This isn't exactly a Myth issue, but I know that you lot are some of the
> smartest so I pose this question to you.  I recently lost the OS drive in my
> backend box.  I slapped in a new drive, and threw MythBuntu back on.  I
> setup my MDADM array and it found it no problems.  I setup my UID to be the
> same as what it was (1001) and my FE found it just fine.  I put in some
> exports in my BE.  They are as follows:
>
> /storage                *(rw,async)
> /storage/mythvideo      *(ro,async,no_root_squash,no_subtree_check)
> /storage/pix            *(ro,async,no_root_squash,no_subtree_check)
> /storage/music          *(ro,async,no_root_squash,no_subtree_check)
> /storage/cover          *(ro,async,no_root_squash,no_subtree_check)
>
>
> Here is my FE fstab:
>
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
> proc            /proc           proc    defaults        0       0
> # /dev/sda1
> UUID=7c164040-1f13-4f3b-bb47-a57ae02bac46 /               ext3
> relatime,errors=remount-ro 0       1
> # /dev/sda5
> UUID=4318fa0b-4009-4445-b731-d23921bfaed0 none            swap
> sw              0       0
> /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
> /dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
> 10.0.0.23:/storage/mythvideo    /var/lib/mythtv/videos  nfs
> defaults        0       0
> 10.0.0.23:/storage/pix          /var/lib/mythtv/pictures        nfs
> defaults        0       0
> 10.0.0.23:/storage/music        /var/lib/mythtv/music           nfs
> defaults        0       0
> 10.0.0.23:/storage/cover        /var/lib/mythtv/cover           nfs
> defaults        0       0
>
>
> When I'm in the FE and in the directory: /var/lib/mythtv/videos/Movies
> folder, the file sizes of the files (ISOs in particular) in that folder,
> don't match the file sizes in the directory on my backend.  I don't
> understand why this is happening.  When I'm watching these files, xine or
> mplayer cut out a few minutes into the movie cuz the NAV packets are in
> error.  What am I doing wrong?  What can I do to fix this?  I'm not seeing
> any errors in the logs (dmesg or /var/log/messages).  Any help would be VERY
> much appreciated.  I am on the latest updates for MythBuntu on my FE and
> BE.  I don't see any problems in HD recordings, or SD recordings.  Just
> items that were on the BE before the crash.  I've tried watching the files
> on the backend, and they're totally fine.  So I know the BE is OK, but
> something is happening.  Thanks!
>
> Jim
>

After a little more searching, I've discovered that this is a problem with
NFS.  I'm have an SMB share and it is showing the correct file sizes.  I
think it might have something to do with NFSv2, but I don't know how to stop
the BE from accepting NFSv2 connections.  I've tried putting in the nfsver=3
command into FSTAB, but it's not making a difference.  Here is the output of
nfsstat on the backend:

Server rpc stats:
calls      badcalls   badauth    badclnt    xdrcall
4271259    0          0          0          0

Server nfs v2:
null         getattr      setattr      root         lookup       readlink
65        0% 1229208  28% 0         0% 0         0% 63245     1% 0
0%
read         wrcache      write        create       remove       rename
2977630  69% 0         0% 0         0% 5         0% 0         0% 0
0%
link         symlink      mkdir        rmdir        readdir      fsstat
0         0% 0         0% 0         0% 0         0% 746       0% 307
0%

Server nfs v3:
null         getattr      setattr      lookup       access       readlink
53      100% 0         0% 0         0% 0         0% 0         0% 0
0%
read         write        create       mkdir        symlink      mknod
0         0% 0         0% 0         0% 0         0% 0         0% 0
0%
remove       rmdir        rename       link         readdir      readdirplus
0         0% 0         0% 0         0% 0         0% 0         0% 0
0%
fsstat       fsinfo       pathconf     commit
0         0% 0         0% 0         0% 0         0%

Client rpc stats:
calls      retrans    authrefrsh
0          0          0

If I'm reading this right, it's saying that it's accepting NFSv2
connections.  Any help would be appreciated.  Thanks!

Jim
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