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From "Craig Macdonald (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4) tool to mount dfs on linux
Date Fri, 18 Apr 2008 19:08:21 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590576#action_12590576
] 

Craig Macdonald commented on HADOOP-4:
--------------------------------------

Pete,

I havent had time to test your latest patch, but things seems to be improving. I note your
comments about exporting the fuse mount. There is a README.NFS in the fuse distribution, which
concerns exporting FUSE mounts.  I have copied it in verbatim below from version 2.7.3  -
seems not quite mature yet.

{noformat}
FUSE module in official kernels (>= 2.6.14) don't support NFS
exporting.  In this case if you need NFS exporting capability, use the
'--enable-kernel-module' configure option to compile the module from
this package.  And make sure, that the FUSE is not compiled into the
kernel (CONFIG_FUSE_FS must be 'm' or 'n').

You need to add an fsid=NNN option to /etc/exports to make exporting a
FUSE directory work.

You may get ESTALE (Stale NFS file handle) errors with this.  This is
because the current FUSE kernel API and the userspace library cannot
handle a situation where the kernel forgets about an inode which is
still referenced by the remote NFS client.  This problem will be
addressed in a later version.

In the future it planned that NFS exporting will be done solely in
userspace.
{noformat}

Regards

C

> tool to mount dfs on linux
> --------------------------
>
>                 Key: HADOOP-4
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: fs
>         Environment: OSs that support FUSE. Includes Linux, MacOSx, OpenSolaris... http://fuse.sourceforge.net/wiki/index.php/OperatingSystems
>            Reporter: John Xing
>            Assignee: Pete Wyckoff
>         Attachments: fuse-dfs.tar.gz, fuse-dfs.tar.gz, fuse-dfs.tar.gz, fuse-dfs.tar.gz,
fuse-dfs.tar.gz, fuse-hadoop-0.1.0_fuse-j.2.2.3_hadoop.0.5.0.tar.gz, fuse-hadoop-0.1.0_fuse-j.2.4_hadoop.0.5.0.tar.gz,
fuse-hadoop-0.1.1.tar.gz, fuse-j-hadoopfs-03.tar.gz, fuse_dfs.c, fuse_dfs.c, fuse_dfs.c, fuse_dfs.c,
fuse_dfs.c, fuse_dfs.sh, fuse_dfs.tar.gz, Makefile, patch.txt, patch.txt, patch2.txt
>
>
> tool to mount dfs on Unix or any OS that supports FUSE

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