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From Manu S <manupk...@gmail.com>
Subject Re: HDFS mounting issue using Hadoop-Fuse on Fully Distributed Cluster?
Date Thu, 26 Apr 2012 12:53:58 GMT
Yeah Alex, I tried. But still I am not able to make it

[root@namenode ~]# *echo "hadoop-fuse-dfs#dfs://namenode:8020 /hdfs_mount
fuse usetrash,rw 0 0" >> /etc/fstab*
[root@namenode ~]# *mount -a
INFO fuse_options.c:162 Adding FUSE arg /hdfs_mount*

[root@namenode ~]# *mount | grep fuse
fuse on /hdfs_mount type fuse
(rw,nosuid,nodev,allow_other,default_permissions)*

[root@namenode ~]# ls -ld /hdfs_mount/
drwxrwxr-x 11 *nobody nobody* 4096 Apr  9 12:34 /hdfs_mount/
[root@namenode ~]# touch /hdfs_mount/file
*touch: cannot touch `/hdfs_mount/file': Permission denied*



On Thu, Apr 26, 2012 at 6:09 PM, alo alt <wget.null@googlemail.com> wrote:

> Manu,
>
> did you mount hdfs over fstab:
>
> hadoop-fuse-dfs#dfs://namenode.local:<PORT> /hdfs-mount fuse usetrash,rw 0
> 0" ?
>
> You could that do with:
> "mkdir -p /hdfs-mount && chmod 777 /hdfs-mount && echo
> "hadoop-fuse-dfs#dfs://NN.URI:<PORT> /hdfs-mount fuse usetrash,rw 0 0" >>
> /etc/fstab && mount -a ; mount"
>
>
> - Alex
>
>
> On Apr 26, 2012, at 2:00 PM, Manu S wrote:
>
> > Thanks a lot Alex.
> >
> > Actually I didn't tried the NFS option, as I am trying to sort out this
> hadoop-fuse mounting issue.
> > I can't change the ownership of mount directory after hadoop-fuse mount.
> >
> > [root@namenode ~]# ls -ld /hdfs_mount/
> > drwxrwxr-x 11 nobody nobody 4096 Apr  9 12:34 /hdfs_mount/
> >
> > [root@namenode ~]# chown hdfs /hdfs_mount/
> > chown: changing ownership of `/hdfs_mount/': Input/output error
> >
> > Any ideas?
> >
> >
> > On Thu, Apr 26, 2012 at 4:26 PM, alo alt <wget.null@googlemail.com>
> wrote:
> > Hi,
> >
> > I wrote a small writeup about:
> > http://mapredit.blogspot.de/2011/11/nfs-exported-hdfs-cdh3.html
> >
> > As you see, the FS is mounted as nobody and you try as root. Change the
> permissions in your hdfs:
> > hadoop -dfs chmod / chown ....
> >
> > - Alex
> >
> > --
> > Alexander Lorenz
> > http://mapredit.blogspot.com
> >
> > On Apr 26, 2012, at 12:50 PM, Manu S wrote:
> >
> >> Dear All,
> >>
> >> I have installed *Hadoop-fuse* to mount the HDFS filesystem locally . I
> >> could mount the HDFS without any issues.But I am not able to do any file
> >> operations like *delete, copy, move* etc directly. The directory
> ownership
> >> automatically changed to *nobody:nobody* while mounting.
> >>
> >> *[root@namenode ~]# ls -ld /hdfs_mount/
> >> drwxr-xr-x 2 root root 4096 Apr 3 16:22 /hdfs_mount/
> >>
> >> [root@namenode ~]# hadoop-fuse-dfs dfs://namenode:8020 /hdfs_mount/**
> **
> >> INFO fuse_options.c:162 Adding FUSE arg /hdfs_mount/
> >>
> >> [root@namenode ~]# ls -ld /hdfs_mount/* *
> >> drwxrwxr-x 10 nobody nobody 4096 Apr 5 13:22 /hdfs_mount/*
> >>
> >> I tried the same with *pseudo-distributed node*,but its working fine. I
> can
> >> do any normal file operations after mounting the HDFS.
> >>
> >> Appreciate your help on the same.
> >>
> >> --
> >> Thanks & Regards
> >> ----
> >> *Manu S*
> >> SI Engineer - OpenSource & HPC
> >> Wipro Infotech
> >> Mob: +91 8861302855                Skype: manuspkd
> >> www.opensourcetalk.co.in
> >
> >
> >
> >
> > --
> > Thanks & Regards
> > ----
> > Manu S
> > SI Engineer - OpenSource & HPC
> > Wipro Infotech
> > Mob: +91 8861302855                Skype: manuspkd
> > www.opensourcetalk.co.in
> >
> >
> >
>
>
> --
> Alexander Lorenz
> http://mapredit.blogspot.com
>
>


-- 
Thanks & Regards
----
*Manu S*
SI Engineer - OpenSource & HPC
Wipro Infotech
Mob: +91 8861302855                Skype: manuspkd
www.opensourcetalk.co.in

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