Hello Davidson :)

Le 14/02/2026 à 20:02, Davidson a écrit :
On Sat, 14 Feb 2026, Jean-François Bachelet wrote:

Hello folks ^^)

There is a small problem that bug me since I've added a Fantec
usb3.2 enclosure to my setup,

reading disks from it is fine, BUT, writing to any of the 4 disks in
it cause problems.

The writes are put on hold many times  at random moments... the main
cause being that the disk written to suddenly 'unmount' itself,
letting the write process in disarray. and me annoyed.

Your description reminds me of a recent thread I saw on another
listserv, which began with this post:

 freebsd-questions "Not that SATA to USB controller question again"
 https://lists.freebsd.org/archives/freebsd-questions/2026-February/007453.html

If it is irrelevant to your concern, forgive my ignorance.

Thanks, I wasn't aware of this post :)


BTW, my problem seems different, as the 4 disks in the enclosure never goes to 'sleep mode', it are always on spinning.

it's only when writing to it for some variable amount of time that the problem arrise,  and when writing to a disk, it should never 'unmount' itself... but it does, each time, multiple times at variable moments of the writing...


so, if the maintainer of the usb stack is reading this list, please tell me what you need in term of report to correct that problem.


note, I have other single drive enclosures from Orico that put the disks in sleep mode when it are NOT used for some times, helping it to not suck power and keep cool when iddle, but I never had a single problems with them as the disks remain mounted and respond promptly when asked for read or write again. (btw, Orico multiple disks enclosures are way pricer than the Fantec in question, so my choice of this one... and my regrets to have done so...)

Thanks by advance :)

Jeff


What are the components (appart the usb storage driver) that can be
involved in this bug and what useful infos/log parts should I
provide to report this bug efficiently ?


Thanks by advance for the answers :)

Jeff

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