Performing verification for Jammy.
I started two Jammy VMs. One is a server and the other a client.
Server
------
$ sudo apt update
$ sudo apt upgrade
$ sudo apt install samba
$ sudo vim /etc/samba/smb.conf
[sambashare]
comment = Samba on Ubuntu
path = /home/ubuntu/sambashare
read only = no
browsable = yes
$ mkdir ~/sambashare
$ sudo smbpasswd -a ubuntu
Client
------
$ sudo apt update
$ sudo apt install cifs-utils
$ mkdir ~/share
$ sudo mount -t cifs -o username=ubuntu //192.168.122.172/sambashare ~/share
The client is using 5.15.0-102-generic from updates:
$ uname -rv
5.15.0-102-generic #112-Ubuntu SMP Tue Mar 5 16:50:32 UTC 2024
$ sudo -s
# while true; do echo "$(date) hallo" >> ./share/hallo.txt; sleep 1 ; done
Launch a separate terminal and run:
$ df -h ~/share
df: /home/ubuntu/share: Resource temporarily unavailable
The issue is seen.
I then enabled -proposed and installed 5.15.0-105-generic.
I had to use the -proposed2 repository due to the packages not being present
in the primary archive -proposed repository.
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/proposed2
$ uname -rv
5.15.0-105-generic #115-Ubuntu SMP Mon Apr 15 09:52:04 UTC 2024
$ sudo -s
# while true; do echo "$(date) hallo" >> ./share/hallo.txt; sleep 1 ; done
$ df -h ~/share
Filesystem Size Used Avail Use% Mounted on
//192.168.122.247/sambashare 9.6G 2.1G 7.5G 23% /home/ubuntu/share
CIFS is back to working again, and we can df the share and see the disk
usage.
The respun kernel in -proposed fixes the issue, happy to mark verified
for Jammy.
** Tags removed: verification-needed-jammy-linux
** Tags added: verification-done-jammy-linux
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2060780
Title:
CIFS stopped working/is unstable with kernel update to 5.15.0-102.112
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Fix Committed
Bug description:
Hi,
updated some Ubuntu 22.04 systems to lastest available state this
morning, which caused CIFS mounts (from various fileservers) to stop
working. Kernel was updated to version 5.15.0-102-generic.
I can mount the shares without problems (mount -t cifs), but then, df for
example tells me: df: /mnt: Resource temporarily unavailable.
I'm able to list and browse all the files, but accessing them (even readonly)
is very unstable. Sometimes it works and sometimes it just gives me i/o errors.
Switching back to 5.15.0-101-generic or 5.15.0-100-generic solves the
problem and everything works again as expected.
Seems like some bug has been implemented in 5.15.0-102-generic...
To reproduce the problem, I started a while loop on one server to
write to some file on a specific mounted CIFS share and read it from
another one
root@<hostname1>:~# while true; do echo "$(date) hallo" >> /mnt/hallo.txt;
sleep 1 ; done
-bash: /mnt/hallo.txt: Input/output error
-bash: /mnt/hallo.txt: Input/output error
^C
root@<hostname2>:~$ tail -f /mnt/hallo.txt
Tue Apr 9 04:10:52 PM CEST 2024 hallo
Tue Apr 9 04:10:53 PM CEST 2024 hallo
Tue Apr 9 04:10:54 PM CEST 2024 hallo
Tue Apr 9 04:10:55 PM CEST 2024 hallo
Tue Apr 9 04:10:56 PM CEST 2024 hallo
Tue Apr 9 04:10:57 PM CEST 2024 hallo
Tue Apr 9 04:10:58 PM CEST 2024 hallo
Tue Apr 9 04:10:59 PM CEST 2024 hallo
Tue Apr 9 04:11:00 PM CEST 2024 hallo
Tue Apr 9 04:11:01 PM CEST 2024 hallo
tail: cannot determine location of '/mnt/hallo.txt'. reverting to polling:
Resource temporarily unavailable
Tue Apr 9 04:11:04 PM CEST 2024 hallo
Tue Apr 9 04:11:05 PM CEST 2024 hallo
Tue Apr 9 04:11:06 PM CEST 2024 hallo
Tue Apr 9 04:11:07 PM CEST 2024 hallo
Tue Apr 9 04:11:08 PM CEST 2024 hallo
Tue Apr 9 04:11:09 PM CEST 2024 hallo
Tue Apr 9 04:11:10 PM CEST 2024 hallo
While doing this, both servers tell me, the resource is unavailable
root@<hostname1>:~# df -h /mnt
df: /mnt: Resource temporarily unavailable
root@<hostname2>:~$ df -h /mnt
df: /mnt: Resource temporarily unavailable
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