filesystems/fuse-exfat problem

doug213

$ doas mount.exfat -o uid=1000 /dev/sd0e /mnt/usb FUSE exfat 1.3.0 ERROR: failed to get size of '/dev/sd0e'.

cant seem to mount an exfat usb. installed filesystems/fuse-exfat, formatted the usb drive in windows to exfat, and this error happens when i try to mount it.

tried it with "rsd0e" too, and in that case i get
ERROR: bad cluster 0xfffffff7 while reading root directory.

can someone confirm exfat works? surely i am missing something obvious here, i remember it used to work great.

doug213 Working here 🤔 ...

pin@mybox $ sysctl hw.disknames
hw.disknames = wd0 sd0
pin@mybox $ doas mount /dev/sd0e /home/pin/Media/                                                                                                  
Password:
pin@mybox $ df -h
Filesystem         Size       Used      Avail %Cap Mounted on
/dev/wd0a           22G       4.8G        16G  23% /
tmpfs              1.9G       716K       1.9G   0% /tmp
kernfs             1.0K       1.0K         0B 100% /kern
ptyfs              1.0K       1.0K         0B 100% /dev/pts
procfs             4.0K       4.0K         0B 100% /proc
tmpfs              1.9G        60K       1.9G   0% /var/shm
/dev/sd0e           14G        12G       2.2G  85% /home/pin/Media

This is a fat32 formatted on Linux.

JuvenalUrbino

doug213 I didn't even know it exfat-fuse had been ported to NetBSD. Indeed the package history reveals it was added only recently. AFAICT, in order to run on NetBSD, any FUSE filesystem implementation needs to be adapted to PUFFS through the refuse(3) API.
I at this point wonder whether support was included in 9.0 already or is available on -current only.

That said, why exfat? As a long time BSD user, where exfat has always been considered a 2nd-class citizen, I haven't touched it in a long while; NTFS support on BSD is actually superior. That said, as Linux, macOS and Solaris can write UFS, I found in FFSv1 a good filesystem. Alternatively ext2fs in another well-supported one. This choices unavoidably leave Windows out however.
NetBSD only environments are probably better to rely on FFSv2 for flash drives, ZFS for external hard disks and CHFS for flash memory.

JuvenalUrbino

doug213 tried it with "rsd0e" too, and in that case i get
ERROR: bad cluster 0xfffffff7 while reading root directory.

doug213 ERROR: failed to get size of '/dev/sd0e'.

usually this sort of errors on NetBSD it is failing at properly reading the the partition layout and therefore the disk geometry; fixing the partition table with disklabel(8) may help

doug213

fat32 is not exfat

doug213 Sorry about that, my bad 🙁

doug213 this is for OpenBSD, http://daemonforums.org/showthread.php?t=10944 but worth a shot.

doug213

yea, i must have messed up something.. i know it worked before.. will try with another usb device

20-100

Why exfat?

To transfer pictures from a camera's SD card way much faster than with a cable
To transfer files (music, videos, sources...) from a friend or colleague's USB pen drive
To save files onto a USB pen drive for use on someone else's machine

JuvenalUrbino

20-100 Truthfully speaking, I've never come across anybody of my acquaintance lending me a exfat-formatted USB stick. As the largest majority of them comes pre-formatted as FAT32 (at least as far as I can tell), I suppose it's really unlikely to see exFAT unless one gets along with anybody tech-savy who plausibly reformatted it.
As I don't work with anything even remotely related to IT, nor have friends who do, that's never been the case so far 😃.
I do reckon however the benefits of exFAT over FAT for flash drives, and apl the more see the rational in the possible use cases you so well highlighted.
Hopefully, given MS recently published the specification, BSDs will introdice proper in-kernel support too

doug213

yes, ntfs-3g is loaded with bugs.. and horribly slow on my system.. i think exfat is the only portable filesystem out there to copy files between mac, win, linux, bsds.. i format all my usbs to exfat