[Pkg-samba-maint] Bug#1055486: cifs-utils: Cannot copy files between 2 CIFS mounts on same client

[Nikola Belavic]

Package: cifs-utils
Version: 2:7.0-2
Severity: normal
X-Debbugs-Cc: nbelavic at gmail.com

Dear Maintainer,

My machine (client) is "alberto" Debian 12, 6.1.0-13-amd64 (smbclient 2:4.17.12+dfsg-0+deb12u1, cifs-utils 2:7.0-2)

CIFS are mounted from /etc/fstab:
nicols at alberto:~$ cat /etc/fstab | grep betelgeuse | egrep "doc|temp"
//betelgeuse/doc                /mnt/betelgeuse/doc                     cifs    file_mode=0660,dir_mode=0770,uid=1000,gid=1000,forceuid,forcegid,username=nicols,password=XXXXXXXXXX
//betelgeuse/temp               /mnt/betelgeuse/temp                    cifs    file_mode=0660,dir_mode=0770,uid=1000,gid=1000,forceuid,forcegid,username=nicols,password=XXXXXXXXXX

nicols at alberto:~$ mount | grep betelgeuse  | egrep "doc|temp"
//betelgeuse/doc on /mnt/betelgeuse/doc type cifs (rw,relatime,vers=3.1.1,cache=strict,username=nicols,uid=1000,forceuid,gid=1000,forcegid,addr=10.33.33.16,file_mode=0660,dir_mode=0770,soft,nounix,serverino,mapposix,rsize=4194304,wsize=4194304,bsize=1048576,echo_interval=60,actimeo=1,closetimeo=1)
//betelgeuse/temp on /mnt/betelgeuse/temp type cifs (rw,relatime,vers=3.1.1,cache=strict,username=nicols,uid=1000,forceuid,gid=1000,forcegid,addr=10.33.33.16,file_mode=0660,dir_mode=0770,soft,nounix,serverino,mapposix,rsize=4194304,wsize=4194304,bsize=1048576,echo_interval=60,actimeo=1,closetimeo=1)

Create regular file:
    nicols at alberto:~$ echo "test" > file.txt
    nicols at alberto:~$ cat file.txt
    test

Create directories on cifs mounts:
    nicols at alberto:~$ mkdir /mnt/betelgeuse/temp/1
    nicols at alberto:~$ mkdir /mnt/betelgeuse/doc/1

Copy this file on both targets:
    nicols at alberto:~$ cp file.txt /mnt/betelgeuse/temp/1/
    nicols at alberto:~$ cp file.txt /mnt/betelgeuse/doc/1/

Verify it is there:
    nicols at alberto:~$ cat /mnt/betelgeuse/temp/1/file.txt
    test
    nicols at alberto:~$ cat /mnt/betelgeuse/doc/1/file.txt
    test

Directories look normal:
    nicols at alberto:~$ ls -al /mnt/betelgeuse/temp/1/
    total 2048
    drwxrwx--- 2 nicols nicols 0 stu   7 08:40 .
    drwxrwx--- 2 nicols nicols 0 stu   7 08:37 ..
    -rw-rw---- 1 nicols nicols 5 stu   7 08:37 file.txt

    nicols at alberto:~$ ls -al /mnt/betelgeuse/doc/1/
    total 1024
    drwxrwx--- 2 nicols nicols 0 stu   7 08:41 .
    drwxrwx--- 2 nicols nicols 0 stu   7 08:37 ..
    -rw-rw---- 1 nicols nicols 5 stu   7 08:37 file.txt

Create another file, copy to first mountpoint and verify:
    nicols at alberto:~$ echo "test test" > file2.txt
    nicols at alberto:~$ cp file2.txt /mnt/betelgeuse/doc/1/
    nicols at alberto:~$ cat /mnt/betelgeuse/doc/1/file2.txt
    test test

    nicols at alberto:~$ ls -al /mnt/betelgeuse/temp/1/
    total 2048
    drwxrwx--- 2 nicols nicols 0 stu   7 08:40 .
    drwxrwx--- 2 nicols nicols 0 stu   7 08:37 ..
    -rw-rw---- 1 nicols nicols 5 stu   7 08:40 file2.txt
    -rw-rw---- 1 nicols nicols 5 stu   7 08:37 file.txt

Copy directly from one CIFS to another:
    nicols at alberto:~$ cp /mnt/betelgeuse/temp/1/file2.txt /mnt/betelgeuse/doc/1/
    cp: error copying '/mnt/betelgeuse/temp/1/file2.txt' to '/mnt/betelgeuse/doc/1/file2.txt': No such file or directory

On destionation dir, empty file is created:
    nicols at alberto:~$ ls -al /mnt/betelgeuse/doc/1/
    total 1024
    drwxrwx--- 2 nicols nicols 0 stu   7 08:41 .
    drwxrwx--- 2 nicols nicols 0 stu   7 08:37 ..
    -rw-rw---- 1 nicols nicols 0 stu   7 08:41 file2.txt
    -rw-rw---- 1 nicols nicols 5 stu   7 08:37 file.txt
    nicols at alberto:~$ cat /mnt/betelgeuse/temp/1/file2.txt
    nicols at alberto:~$

Only way I can make this cp works is if i put "vers=1.0" in nounting options.
On another machine i have (Ubuntu 20.04.6 LTS, 5.4.0-152-generic, cifs-utils 2:6.9-1ubuntu0.2, smbclient 2:4.15.13+dfsg-0ubuntu0.20.04.2)
everything works as expected (with same mount options, vers=3.1.1)

I am sorry if this doesn't belong here, i am new to this bug reporting stuff :)


Regards

Nikola



-- System Information:
Debian Release: 12.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-13-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages cifs-utils depends on:
ii  libc6             2.36-9+deb12u3
ii  libcap-ng0        0.8.3-1+b3
ii  libgssapi-krb5-2  1.20.1-2+deb12u1
ii  libkeyutils1      1.6.3-2
ii  libkrb5-3         1.20.1-2+deb12u1
ii  libpam0g          1.5.2-6+deb12u1
ii  libtalloc2        2.4.0-f2
ii  libwbclient0      2:4.17.12+dfsg-0+deb12u1
ii  python3           3.11.2-1+b1

Versions of packages cifs-utils recommends:
ii  keyutils  1.6.3-2

Versions of packages cifs-utils suggests:
ii  bash-completion  1:2.11-6
ii  smbclient        2:4.17.12+dfsg-0+deb12u1
pn  winbind          <none>

-- no debconf information