[clug] ntfs-3g anyone?

[Rodney Peters]

On Tuesday, 21 June 2016 23:11:09 AEST Eyal Lebedinsky wrote:
> On 21/06/16 20:37, Tony Lewis wrote:
> > It's complete speculation but I'd consider if the USB port is dodgy inside
> > your Linux system.> 
>  > Maybe it's not delivering enough power or good enough data connection.
>  > Maybe the 2.5" HDD is right on the limit of the power draw, so any other
>  > flash drive you put in doesn't have that problem.
> I was thinking about  this too. This is a USB3.0 disk so should have enough
> power. Yet, a similar 1.5TB USB3.0 disk does not show this problem.
> 
> I attached a USB2.0 power meter between the disk and the PC. The disk did
> come up in USB2.0 mode. It consumed 520mA idle and 620mA reading the raw
> device. I think that USB3.0 should be able to handle this demand reliably.
> 
> Nevertheless, is there not some check to detect data corruption on the USB
> bus? Is there no other error detection in the disk itself? I am surprised
> that not one error was ever logged from any system.
> 
> cheers
> 
> > Tony
> > 
> > On 21/06/16 18:42, Eyal Lebedinsky wrote:
> >> I am having issues with a 2.5" USB disk.
> >> 
> >> 1)
> >> on fedora 19 I get these log messages when mounting the fs
> >> 
> >>     ntfs-3g[13859]: Version 2013.1.13 integrated FUSE 27
> >>     ntfs-3g[13859]: Mounted /dev/sdj1 (Read-Write, label "Seagate-4TB",
> >>     NTFS 3.1) ntfs-3g[13859]: Cmdline options:
> >>     rw,nodev,nosuid,uid=500,gid=500,dmask=0077,fmask=0177,uhelper=udisks
> >>     2 ntfs-3g[13859]: Mount options:
> >>     rw,nodev,nosuid,uhelper=udisks2,allow_other,nonempty,relatime,defaul
> >>     t_permissions,fsname=/dev/sdj1,blkdev,blksize=4096 ntfs-3g[13859]:
> >>     Global ownership and permissions enforced, configuration type 1>> 
> >> The mount is now accessible.
> >> 
> >> On f22 I get
> >> 
> >>     ntfs-3g[29109]: Version 2016.2.22 integrated FUSE 27
> >>     ntfs-3g[29109]: Mounted /dev/sdm1 (Read-Write, label "Seagate-4TB",
> >>     NTFS 3.1) ntfs-3g[29109]: Cmdline options:
> >>     rw,nosuid,nodev,noexec,uid=0,gid=0,umask=077,fmask=0177,dmask=0077,u
> >>     ser ntfs-3g[29109]: Mount options:
> >>     rw,nosuid,nodev,noexec,user,allow_other,nonempty,relatime,default_pe
> >>     rmissions,fsname=/dev/sdm1,blkdev,blksize=4096 ntfs-3g[29109]: Global
> >>     ownership and permissions enforced, configuration type 1>> 
> >> The mount point is not accessible, what I get is
> >> 
> >>     $ ls -l /run/media/eyal/
> >>     ls: cannot access /run/media/eyal/Seagate-4TB: Transport endpoint is
> >>     not connected total 0
> >>     d????????? ? ? ? ?            ? Seagate-4TB
> >> 
> >> If I mount manually
> >> 
> >>     $ sudo ntfs-3g /dev/sdm1 /usb
> >> 
> >> I see
> >> 
> >>     ntfs-3g[29335]: Version 2016.2.22 integrated FUSE 27
> >>     ntfs-3g[29335]: Mounted /dev/sdm1 (Read-Write, label "Seagate-4TB",
> >>     NTFS 3.1) ntfs-3g[29335]: Cmdline options:
> >>     ntfs-3g[29335]: Mount options:
> >>     allow_other,nonempty,relatime,fsname=/dev/sdm1,blkdev,blksize=4096
> >>     ntfs-3g[29335]: Ownership and permissions disabled, configuration
> >>     type 1 ntfs-3g[29335]: Unmounting /dev/sdm1 (Seagate-4TB)
> >> 
> >> The last line looks unexpected to me. Inspecting the mount fails:
> >>     $ ls -l /usb
> >>     ls: cannot access /usb: Transport endpoint is not connected
> >> 
> >> Interestingly, no messages are logged with the following
> >> 
> >>     $ sudo umount /usb
> >>     $ sudo umount /usb
> >>     umount: /usb: not mounted
> >> 
> >> I searched and found no solution. Anyone using ntfs-3g?
> >> 
> >> 2)
> >> Another issue, may be related, is that on f19 (where the mount is
> >> visible) I get bad data regularly. This is a new 4TB disk which I want
> >> to use for archival storage. Naturally I run checksum on the files and I
> >> am getting many files delivering bad checksums. Re-running fails a
> >> different set of files.
> >> 
> >> There are no errors logged that I could find.
> >> 
> >> I should mention that this disk was formatted and written to on Windows
> >> 8.1, and as such I expect the data on it to be in good shape.
> >> Furthermore, a failed checksum will come good next time I try the same
> >> file.
> >> 
> >> TIA
> >> 
> >> --
> >> Eyal Lebedinsky (eyal at eyal.emu.id.au)

It depends on the origin of the USB 3.0 port itself.  I have an economy add-
on, that although it has a molex power connector attached, won't handle 2.5" 
HDD and essentially works only with flash media.

I suggest you check the ntfs-3g website.  Does it support > 2 TB ?.

Would you be better off formatting ext4 ?   I don't use NTFS with Linux, 
because I am not confident that 100 % of the essential functions are handled, 
NTFS being closed source.

Rod