Re: [gentoo-user] Re: USB crucial file recovery

[Alan McKinnon]

On 31/08/2016 02:08, Grant wrote:
>>>> And why use exfat if you use linux? It is just not needed at all.
>>>
>>> I agree.  If you want to transport something between Linux systems,
>>> use ext2/3 and use "mount" options to handle the permission issues.
>>
>> You can't control ownership and permissions of existing files with mount
>> options on a Linux filesystem. See man mount.
>
>
> So in order to use a USB stick between multiple Gentoo systems with
> ext2, I need to make sure my users have matching UIDs/GIDs?

Yes

The uids/gids/modes in the inodes themselves are the owners and perms,
you cannot override them.

So unless you have mode=666, you will need matching UIDs/GIDs (which is
a royal massive pain in the butt to bring about without NIS or similar

>  I think
> this is how I ended up on NTFS in the first place.

Didn't we have this discussion about a year ago? Sounds familiar now

>  Is there a
> filesystem that will make that unnecessary and exhibit better
> reliability than NTFS?

Yes, FAT. It works and works well.
Or exFAT which is Microsoft's solution to the problem of very large
files on FAT.

Which NTFS system are you using?

ntfs kernel module? It's quite dodgy and unsafe with writes
ntfs-ng on fuse? I find that one quite solid


ntfs-ng does have an annoyance that has bitten me more than once. When
ntfs-nf writes to an FS, it can get marked dirty. Somehow, when used in
a Windows machine the driver there has issues with the FS. Remount it in
Linux again and all is good.

The cynic in me says that Microsoft didn'y implement their own FS spec
properly whereas ntfs-ng did :-)



-- 
Alan McKinnon
alan.mckinnon@×××××.com