Re: [Encfs-users] encfs performance with iozone benchmark tool.

[Valient Gough <valient@gm...>]

Ok, thanks.

I'd suggest benchmarking disk based operations (not just cache effects).
And the best benchmark is to use your own data access patterns.  That is, if
you typically work with mp3s or videos a lot, then testing things like
filename creation speed isn't worth much.

regards,
Valient

On 12/10/06, ramkumar p <ramkumar.paranandi@...> wrote:
>
> hi ,
> file I/O operations on ext3 file system are  nearly 20-25 times faster
> than the file I/O operations on encfs.
> Eventhough encfs is a user level  this difference might count.
>
>
>

[Encfs-users] encfs performance with iozone benchmark tool.

[ramkumar p <ramkumar.paranandi@gm...>]

hi ,
file I/O operations on ext3 file system are  nearly 20-25 times faster than
the file I/O operations on encfs.
Eventhough encfs is a user level  this difference might count.

Re: [Encfs-users] Permission as a regular user...and more questions

[Sy Ali <sy1234@gm...>]

On 12/5/06, Vikram KAUL <vkaul@...> wrote:
> even though user "vkaul" is a member of the "fuse" group.
>
> Do I have to make the "encfs" call as root ?
>
> The only way I could get it to work was forcing the /dev/fuse to have
> execute permissions for all. I changed them from
>
> crw------- 1 root root 10, 229 Dec  4 23:21 /dev/fuse
>
> to
>
> crwxrwxrwx 1 root root 10, 229 Dec  4 23:21 /dev/fuse

If /dev/fuse is root:root, then 'vkaul' being a member of 'fuse'
wouldn't matter.  =)

Maybe you should make /dev/fuse crw-rw---- root fuse ?

[Encfs-users] Permission as a regular user...and more questions

[Vikram KAUL <vkaul@re...>]

Folks,

  First post here. Downloaded encfs today. Am having some problems...

  encfs /home/vkaul/test/encrypted /home/vkaul/test/regular

gives me a permission denied problem

New Encfs Password:
Verify Encfs Password:
fusermount: failed to open /dev/fuse: Permission denied
fuse failed.  Common problems:
  - fuse kernel module not installed (modprobe fuse)
  - invalid options -- see usage message

even though user "vkaul" is a member of the "fuse" group.

Do I have to make the "encfs" call as root ?

The only way I could get it to work was forcing the /dev/fuse to have 
execute permissions for all. I changed them from

crw------- 1 root root 10, 229 Dec  4 23:21 /dev/fuse

to

crwxrwxrwx 1 root root 10, 229 Dec  4 23:21 /dev/fuse


On a more generic note, what I want is to be able to do the following.. 
and I am wondering whether encfs is the right way to go about it:

1. Have a dedicated directory which is mounted when a user logs in.
    This mountpoint will have the regular (un-encrypted) files, say at
    /home/user1/enproj/files

2. Have the corresponding encrypted filesystem at
    The user1 has no access to these (as they are under /root/...)
    /root/encrypted/home/user1/enproj/files

3. Not allow the user to copy/move out of /home/user1/enproj/files
    All user1 operations have to be in /home/user1/enproj/files
    This, I suppose, would have been easy if I wanted the setup for
    /home/user1   But I want it for /home/user1/enproj/files

4. Ability to change the passphrase/password using encfsctl

5. Ability to unmount at any time, by forcing the user out of the
    mount point

6. Ability to mount at any time, to prepare the /home/user1/enproj/files
    data for the user1


Any pointers will be welcome

regards..
Vikram