ntfsresize prompts ( on non tty ) and refuses to resize dirty volume

[ljs]

ntfsresize prints a warning and prompts for input whether it should proceed or not in response to the dirty volume flag. When stdin is connected to /dev/null, it refuses to proceed. Interactive prompts should not be made when stdin is not a tty. The --force flag should also cause the resize to proceed.

Reproduction:

mkfs.ntfs -f /dev/vg/ntfs
ntfsfix /dev/vg/ntfs
ntfsresize -P --force -s 1G /dev/vg/ntfs < /dev/null

ntfsresize v2011.4.12AR.4 (libntfs-3g)
Device name : /dev/devserv/ntfs
NTFS volume version: 3.1
Cluster size : 4096 bytes
Current volume size: 5368705536 bytes (5369 MB)
Current device size: 5368709120 bytes (5369 MB)
New volume size : 999993856 bytes (1000 MB)
Checking filesystem consistency ...
Accounting clusters ...
Space in use : 28 MB (0.5%)
Collecting resizing constraints ...
Needed relocations : 6554 (27 MB)
WARNING: Every sanity check passed and only the dangerous operations left.
Make sure that important data has been backed up! Power outage or computer
crash may result major data loss!
Are you sure you want to proceed (y/[n])? OK quitting. NO CHANGES have been made to your NTFS volume.

[Phillip Susi (psusi)]

In the future, please attach log files instead of pasting them into the description.

[Phillip Susi (psusi)]

It looks like this is a bug in ntfs-3g. ntfsresize is prompting if it is ok to proceed, but since its stdin is connected to /dev/null, it refuses to proceed. ntfsresize should not be attempting an interactive prompt when it is not connected to a tty, and I'm not sure why it is prompting in the first place. It looks like it is caused by the dirty volume flag since it does not prompt the first time it is run on a clean volume, then does prompt when run again ( because the first run set the dirty flag ).

[Jean-Pierre (jean-pierre-andre)]

This was fixed in ntfs-3g-2011.4.12AR.6
On buggy versions you may avoid the bug by using option -f twice : ntfsresize -ff.

[Phillip Susi (psusi)]

Well then, it looks like this has been fixed in Precise.

[Curtis Gedak (gedakc)]

This problem was resolved in GParted 0.9.1.

The relevant upstream bug report is:

Bug 655215 - NTFS partition resize fails
https://bugzilla.gnome.org/show_bug.cgi?id=655215