Fedora 35 and nbd

[Valery Reznic]

    On Monday, December 13, 2021, 02:45:02 PM GMT+2, Rabin Yasharzadehe <rabin at rabin.io> wrote:  
 
 > yes,  typo. my bad
> I'm with Lenovo P50. But I don't think it's related to the hardware.But yours system works and 3 of mine not.Could you please boot your Lenov P50 from the live usb and check their?
Valery



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Rabin

On Mon, 13 Dec 2021 at 12:26, Valery Reznic <valery_reznic at yahoo.com> wrote:

 You meant can't reproduce?I tried to boot from live-usb Fedora 35 3 different lenovo thinkpad laptops and problem presents on all of them.
What computer with fedora you have?
Valery


    On Sunday, December 12, 2021, 06:16:51 PM GMT+2, Rabin Yasharzadehe <rabin at rabin.io> wrote:  
 
 On Fedora 35, and I can reproduce your case,
# modprobe nbd nbds_max=3 && ls -l /dev/nbd* | wc -l
3
# modprobe -r nbd
# modprobe nbd nbds_max=42 && ls -l /dev/nbd* | wc -l
42




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Rabin

On Sun, 12 Dec 2021 at 18:01, Valery Reznic <valery_reznic at yahoo.com> wrote:

Hello.Recently I faced strange problem - when I load nbd module on my freshly installed fedora 35 x86-64 there are only 8 nbd devices nbd0 - nbd7, while modinfo shows nbds_max=16When I load nbd with nbds_max=32 - same thing, 8 nbd devices.
But loading nbd with nbds_max<= 7 works like expected.
Looks like there is a limit somewhere.
I looked in the udev rules, in logs, but so far found nothing of interest.
Do you have any idea what it can be and how investigate the issue?
Valery
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