[ATrpms-users] fuse kmdl

[Axel Thimm]

On Sat, Jan 06, 2007 at 10:57:36AM -0500, Jeff Guerdat wrote:
> Maybe I don't understand the total rationale behind 3rd party 
> repositories such as ATrpms.

Let me think. Hm, providing useful extensions and fixes not found in
the main repos? :) :) :)

> Suddenly there's a fuse module that can be installed from ATrpms
> but, since there's one bundled with FC6, why would I want to use it?
> I have been sensitized to the recent problem with ntfs-3g
> (http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=221420)
> requiring an update to the version of fuse (spent 2 hours on it
> yesterday) so that may have been the impetus to roll this out but
> there was just a new ntfs-3g update from Fedora extras that also
> addressed the issue.
> 
> Please educate me as to why I would want to use one module over another 
> so I can make intelligent decisions.

The userland part is identical to what fedora ships, BUT now you kmdl
that really bring fuse everywhere up to 2.6.x. The report you quote
says for example:

| The current FUSE kernel module always does lazy unmount
| unconditionally. This can have a serious consequence regards to the
| data consistency of block device based filesystems (I'm aware of
| only ntfs-3g and zfs) because the user space processes don't have
| enough time to close the mounted device safely and sync all
| [meta]data in certain circumstances (e.g. when the device physically
| detached right after 'umount').
| 
| The fix is available only in the FUSE 2.6.[01] kernel modules that's
| why ntfs-3g requires it (the fix was the new API). Unfortunately no
| workaround is possible in ntfs-3g, the only possible fix is the
| requirement of FUSE 2.6.[01] kernel module. All ntfs-3g releases
| which don't use the safe FUSE kernel module are unsafe and subject
| to data loss after umounts (the risk is small but it's there and the
| result can be serious).

So upgrading to what ATrpms hold means you get the fixed kernel-land
bits which both old and new ntfs-3g benefit. Furthermore you don't
need to wait until there is another kernel release by Fedora.

BTW credits go to Paulo Roma Cavalcanti.
-- 
Axel.Thimm at ATrpms.net
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