linux-kernel - Re: USB Attached SCSI breakage due no udev involvement

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Date:   Sun, 10 May 2020 14:10:04 +0700
From:   Dio Putra <dioput12@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     oneukum@...e.com, linux-usb@...r.kernel.org,
        linux-scsi@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
        stern@...land.harvard.edu, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
        stern@...land.harvard.edu, linux-kernel@...r.kernel.org
Subject: Re: USB Attached SCSI breakage due no udev involvement

On 5/10/20 1:54 PM, Greg KH wrote:
> On Sun, May 10, 2020 at 01:48:24PM +0700, Dio Putra wrote:
>> On 5/10/20 12:47 PM, Greg KH wrote:
>>> On Sun, May 10, 2020 at 09:55:57AM +0700, Dio Putra wrote:
>>>> Hi, it's first time for me to report user-space breakage in here, so
>>>> i'm begging your pardon.
>>>>
>>>> I want to report that Linux 5.4 breaking my USB mount workflow due
>>>> udevadm monitor report here (I'm using vanilla kernel 5.4.39 on
>>>> Slackware64 Current and vanilla kernel 4.4.221 on Slackware64 14.2):
>>>
>>> <snip>
>>>
>>> Sorry, but what actually changed that you can see in the logs?
>> Sorry, what do you mean? The dmesg log or the kernel changelogs?
> 
> Either, your message made them pretty impossible to compare with all of
> the line-wrapping :(
> 
I'm so sorry for first message mess, because that message has been sent by
Gmail Website. Can I send my logs as attachment? I try to convenient everyone
here. ( FYI, I just switched to Thunderbird with these settings:
https://www.kernel.org/doc/html/v4.12/process/email-clients.html#thunderbird-gui ) 

>>> What functionality broke?  What used to work that no longer does work?
>>>
>> Yes, it supposed that just work and kernel could talk with udev, not just handled by the kernel.
> 
> I don't understand, what functionality changed?  What exactly used to
> work that no longer does?
linux-5.4 has been never called the udev dependencies whereas
linux-4.4 will call any udev dependencies if necessary, that's the problem.

> 
> Did you change anything else other than the kernel on your system?  Did
> you change to a newer version of udev/systemd or anything else?
> 
I'm using eudev-master from their official mirror github:
https://github.com/gentoo/eudev

> thanks,
> 
> greg k-h
>