[Bug 1772148] Re: Mount.cifs does not work without keyutils being installed
Andreas Hasenack
1772148 at bugs.launchpad.net
Mon Sep 28 18:02:16 UTC 2020
Here is some of the history of the keyutils dependency in the cifs-utils
package:
- first added in response to debian bug #504690 in 2011:
cifs-utils (2:4.9-1) unstable; urgency=low
[ Luk Claes ]
* Add Recommends to keyutils so following DFS links works out of the
box. Closes: #504690.
* Install README. Closes: #603094.
* Add --without-libcap to dh_auto_configure. Closes: #615211.
[ Steve Langasek ]
* New upstream release. Closes: #600788.
- mount.cifs: use original device name as-is for mtab.
Closes: #586009, #583508, #589218.
-- Luk Claes <luk at debian.org> Sat, 02 Apr 2011 17:10:35 +020
Then downgraded to "suggests" in 2016, in response to debian bug #822841:
cifs-utils (2:6.5-2) unstable; urgency=medium
* Team upload
* Move keyutils and winbind from Recommends to Suggests (Closes: #822841)
* Spring cleaning:
- Standards-Version: 3.9.8 (no change)
- Use secure Vcs-* URIs
- Remove cifs-utils.NEWS as mount.cifs is setuid again since 2:5.4-2
(pre-wheezy)
- Updated gbp.conf (Old style config section)
- Renamed cifs-utils.lintian to cifs-utils.lintian-overrides
- Updated copyright file
-- Mathieu Parent <sathieu at debian.org> Tue, 03 May 2016 12:16:18 +0200
Now, mount.cifs works just fine without cifs-utils installed, for many scenarios. Maybe even most of the time? The main problem seems to be to identify the cases when keyutils is needed, and clearly communicate that.
** Bug watch added: Debian Bug tracker #967972
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=967972
** Also affects: cifs-utils (Debian) via
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=967972
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1772148
Title:
Mount.cifs does not work without keyutils being installed
Status in cifs-utils package in Ubuntu:
Confirmed
Status in cifs-utils package in Debian:
Unknown
Bug description:
In 17.10 you could mount a cifs network-drive via
> sudo mount -t cifs //xx.yy.zz/abc t -o
vers=1.0,username=xxxxxx,sec=ntlm,uid=1000,gid=1000,iocharset=utf8,domain=DD
having cifs-utils (and smbclient) installed manually.
But in 18.04 (both with SMB1 and moving til SMB3) it does not work
until keyutils has been installed.
The only error I see, when the cifs mount is not working, is a -2
error ("mount error(2): No such file or directory" or "CIFS VFS:
cifs_mount failed w/return code = -2"):
mbmount> sudo mount -t cifs //xx.yy.zz/abc t --verbose -o vers=3,username=xxxxxx,sec=ntlmv2,uid=1000,gid=1000,iocharset=utf8,domain=DD,nounix
Password for xxxxx: ********
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
Smbmount> dmesg | tail
[ 89.915840] [UFW BLOCK] IN=wlp4s0 OUT= MAC=28:16:ad:18:e7:87:00:18:4d:4f:f5:1c:08:00 SRC=10.88.128.13 DST=192.168.1.3 LEN=40 TOS=0x00 PREC=0x00 TTL=255 ID=17677 PROTO=TCP SPT=445 DPT=55514 WINDOW=0 RES=0x00 RST URGP=0
[ 89.916307] [UFW BLOCK] IN=wlp4s0 OUT= MAC=28:16:ad:18:e7:87:00:18:4d:4f:f5:1c:08:00 SRC=10.88.4.188 DST=192.168.1.3 LEN=40 TOS=0x00 PREC=0x00 TTL=255 ID=5527 PROTO=TCP SPT=445 DPT=52714 WINDOW=0 RES=0x00 RST URGP=0
[ 362.580011] FS-Cache: Loaded
[ 362.592410] FS-Cache: Netfs 'cifs' registered for caching
[ 362.592495] Key type cifs.spnego registered
[ 362.592498] Key type cifs.idmap registered
[ 362.752492] CIFS VFS: BAD_NETWORK_NAME: \\xx.yy.zz\abc
[ 362.787329] CIFS VFS: cifs_mount failed w/return code = -2
[ 381.832633] CIFS VFS: BAD_NETWORK_NAME: \\xx.yy.zz\abc
[ 381.870721] CIFS VFS: cifs_mount failed w/return code = -2
> apt install keyutils
...
Smbmount> sudo mount -t cifs //xx.yy.zz/abc t --verbose -o
vers=3,username=xxxxxx,sec=ntlmv2,uid=1000,gid=1000,iocharset=utf8,domain=DD,nounix
>MOUNT OK HERE>
Smbmount> dmesg | tail
[ 89.916307] [UFW BLOCK] IN=wlp4s0 OUT= MAC=28:16:ad:18:e7:87:00:18:4d:4f:f5:1c:08:00 SRC=10.88.4.188 DST=192.168.1.3 LEN=40 TOS=0x00 PREC=0x00 TTL=255 ID=5527 PROTO=TCP SPT=445 DPT=52714 WINDOW=0 RES=0x00 RST URGP=0
[ 362.580011] FS-Cache: Loaded
[ 362.592410] FS-Cache: Netfs 'cifs' registered for caching
[ 362.592495] Key type cifs.spnego registered
[ 362.592498] Key type cifs.idmap registered
[ 362.752492] CIFS VFS: BAD_NETWORK_NAME: \\xx.yy.zz\abc
[ 362.787329] CIFS VFS: cifs_mount failed w/return code = -2
[ 381.832633] CIFS VFS: BAD_NETWORK_NAME: \\xx.yy.zz\abc
[ 381.870721] CIFS VFS: cifs_mount failed w/return code = -2
[ 432.322763] CIFS VFS: BAD_NETWORK_NAME: \\xx.yy.zz\abc
Keyutils were not manually installed in my 17.10 system. And I am
aware of the change in default SMB versions from kernel 4.13.5 and on
(cause me to insert the vers=1.0 in the mount options):
From man mount.cifs:
"The default since v4.13.5 is for the client and server to negotiate the highest possible
version greater than or equal to 2.1. In kernels prior to
v4.13, the default was 1.0. For kernels between v4.13 and v4.13.5 the default is 3.0."
And there are no fundamental change in the packages for cifs-utils, as
I can see (both suggests to use keyutils!).
My 17.10:
Package: cifs-utils
Status: install ok installed
Priority: optional
Section: otherosfs
Installed-Size: 229
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Architecture: amd64
Version: 2:6.7-1
Replaces: smbfs (<< 2:4.0~rc1-1)
Depends: samba-common, libc6 (>= 2.17), libcap-ng0, libkeyutils1 (>= 1.4), libkrb5-3 (>= 1.13~alpha1+dfsg), libpam0g (>= 0.99.7.1), libtalloc2 (>= 2.0.4~git20101213), libwbclient0 (>= 2:4.0.3+dfsg1)
Suggests: keyutils, smbclient, winbind
Conffiles:
/etc/request-key.d/cifs.idmap.conf 4c95734a68b45b65a5dc7b108836427b
/etc/request-key.d/cifs.spnego.conf db5289bad3063aea58e1814380259a28
Description: Common Internet File System utilities
The SMB/CIFS protocol provides support for cross-platform file sharing with
Microsoft Windows, OS X, and other Unix systems.
.
This package provides utilities for managing mounts of CIFS network
file systems.
Original-Maintainer: Debian Samba Maintainers <pkg-samba-maint at lists.alioth.debian.org>
Homepage: http://www.samba.org/~jlayton/cifs-utils/
My 18.04:
Package: cifs-utils
Status: install ok installed
Priority: optional
Section: otherosfs
Installed-Size: 226
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Architecture: amd64
Version: 2:6.8-1
Replaces: smbfs (<< 2:4.0~rc1-1)
Depends: samba-common, libc6 (>= 2.17), libcap-ng0, libkeyutils1 (>= 1.4), libkrb5-3 (>= 1.13~alpha1+dfsg), libpam0g (>= 0.99.7.1), libtalloc2 (>= 2.0.4~git20101213), libwbclient0 (>= 2:4.0.3+dfsg1)
Suggests: keyutils, smbclient, winbind
Conffiles:
/etc/request-key.d/cifs.idmap.conf 4c95734a68b45b65a5dc7b108836427b
/etc/request-key.d/cifs.spnego.conf db5289bad3063aea58e1814380259a28
Description: Common Internet File System utilities
The SMB/CIFS protocol provides support for cross-platform file sharing with
Microsoft Windows, OS X, and other Unix systems.
.
This package provides utilities for managing mounts of CIFS network
file systems.
Original-Maintainer: Debian Samba Maintainers <pkg-samba-maint at lists.alioth.debian.org>
Homepage: http://www.samba.org/~jlayton/cifs-utils/
My system info:
My old linux, 17.10 box:
mount.cifs version: 6.7
Linux cef-leno 4.13.0-39-generic #44-Ubuntu SMP Thu Apr 5 14:25:01 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
My new linux: 18:04 box:
mount.cifs version: 6.8
Distributor ID: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic
Linux xxxxxx 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24
06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
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