Re: mount phone for file transfer?

On 10/24/25 12:07, Gary Aitken wrote:
> On 10/20/25 11:54, Jin Guojun[VFF] wrote:
>> On 10/19/25 20:40, Gary Aitken wrote:
>>> On 10/19/25 11:47, Jin Guojun[VFF] wrote:
>>>> On 10/19/25 10:13, Gary Aitken wrote:
>>>
>>>>> How does one mount a phone (android) to transfer files? I can
>>>>> do this on a lynix system but can't figure out how on my fbsd
>>>>> 13.5. I have urndis loaded:
>>> ...
>>>> # kldload fusefs.ko
>>>>
>>>> # jmtpfs -o allow_other /mnt
>>>>
>>>> Make sure the phone is allowed other device to access its
>>>> storage: usually, the phone will ask this permission when
>>>> jmtpfs command is issued.
>>>
>>>
>>> # jmtpfs -o allow_other /mnt/memstick Device 0 (VID=04e8 and
>>> PID=6860) is a Samsung Galaxy models (MTP). # ls -l /mnt/memstick 
>>> ls: /mnt/memstick: Input/output error # umount /mnt/memstick
>>>
>>> It acted like it worked... phone dinged when plugged in The phone
>>> is set to: Use USB for: Transferring files/AndroidAuto USB
>>> controlled by: This device (I can't seem to change it)
>>>
>>> Once or twice I saw the notice for Allow/Disallow access and
>>> allowed, but always after things didn't work; now I can't find it: 
>>> plug in phone ding ... no dialog, even with no apps on screen Swipe 
>>> up, down, left, right... nada Swipe down, I see "USB for
>>> file transfer", as if it's ok as is / already allowed, but ls
>>> still fails. Thoughts? Samsung Galaxy A15
>
>> This is a setting issue cross different phones, even between Samsung
>> phones, who is controlling the File Transfer (F/T).
>>
>> To make things simpler, ignore who controls the F/T and repeat the
>> same process twice with a umount in between.
>>
>> #  jmtpfs -o allow_other /mnt                 ; mount may fail due
>> to the phone is not ready to do F/T
>>
>> wait for phone to ask Allow/Deny and press Allow
>>
>> # ls /mnt may see nothing but Input/output error because mounting
>> process was done before phone allows F/T
>>
>> # umount /mnt
>>
>> #  jmtpfs -o allow_other /mnt              ; this time mount should
>> be successful
>>
>> if phone asks Allow/Deny again due to some kind timing issue, try to
>> do umount and jmtpfs mount one more time.
>
> Getting back to this...
> I have several mount points under /mnt, which is where I was trying to 
> mount.
> As I was having trouble, I made a fresh mount point at /newmnt
>
> Originally I saw no allow prompt on the phone.
> I thought the I/O error meant it didn't work, so issued umount but 
> left it plugged in.
> A few minutes later reopened the phone and the allow prompt was there.
> Hit allow, then tried again and it worked.
>
> I'm thinking it's the procedure, not the mount point, which made the 
> difference.
>
> Gary

This may be a USB port issue although it looks like a timing issue.

For 13.x-R and later, the USB 3 works much better/faster than USB 2 as  
I have experienced.