linux-kernel - Re: [EXTERNAL] Re: [PATCH 4.19 013/247] cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs

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Message-ID: <YGx3u01Wa/DDnjlV@eldamar.lan>
Date:   Tue, 6 Apr 2021 17:01:15 +0200
From:   Salvatore Bonaccorso <carnil@...ian.org>
To:     Shyam Prasad <Shyam.Prasad@...rosoft.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Aurelien Aptel <aaptel@...e.com>,
        Steven French <Steven.French@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [EXTERNAL] Re: [PATCH 4.19 013/247] cifs: Set
 CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.

Hi,

On Tue, Apr 06, 2021 at 02:00:48PM +0000, Shyam Prasad wrote:
> Hi Greg,
> We'll need to debug this further to understand what's going on. 

Greg asked it the same happens with 5.4 as well, I do not know I was
not able to test 5.4.y (yet) but only 5.10.y and 4.19.y.
> 
> Hi Salvatore,
> Any chance that you'll be able to provide us the cifsFYI logs from the time of mount failure?
> https://wiki.samba.org/index.php/LinuxCIFS_troubleshooting#Enabling_Debugging

Please find it attached. Is this enough information?

The mentioned home DFS link 'home' is a DFS link to
msdfs:SECONDHOST\REDACTED on a Samba host.

The mount is triggered as

mount -t cifs //HOSTIP/REDACTED/home /mnt --verbose -o username='REDACTED,domain=DOMAIN'

Regards,
Salvatore

View attachment "dmesg.log" of type "text/plain" (19956 bytes)