Public bug reported: The following is from Launchpad Questions:
My CIFS network mount under Ubuntu 11.10 (Oneiric Ocelot) will freeze without much obvious reason. Idling for an extensive time is the only thing I can think of. Found many similar reports, eg: http://www.centos.org/modules/newbb/print.php?form=1&topic_id=35154&forum=55&order=ASC&start=0 http://serverfault.com/questions/307636/virtualbox-running-fedora-15-keeps-losing-its-cifs-mount-of-a-windows-share My symptom is, I am able to mount the CIFS Network drive fine. I can write to it and read from it, for quite a while. The problem is that eventually the mount will become inaccessible from linux. When that happens I can't run ls /mnt/z. Even sudo umount -l /mnt/zdoesn't work. In fact, when I run those commands they lock up the shell in which they were run. dmesg gives the following error [ 72.250743] CIFS VFS: default security mechanism requested. The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 3.1 [ 126.807829] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0 [ 288.336825] hrtimer: interrupt took 4463392 ns [ 2036.256098] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0 [ 3622.991531] CIFS VFS: Server corpfs1 has not responded in 300 seconds. Reconnecting... [ 4722.294174] CIFS VFS: Unexpected lookup error -512 [ 4782.585254] CIFS VFS: Unexpected lookup error -512 [ 4855.705273] CIFS VFS: Unexpected lookup error -512 The reason that I suspect that idling for an extensive time is the culprit is that I can see that the system seems to have recovered from some kind of sleep mode, and remounting my prime HD (sda1). But I'm not sure. Here are more info of my system: $ uname -rm 3.0.0-17-generic x86_64 $ modinfo /lib/modules/3.0.0-17-generic/kernel/fs/cifs/cifs.ko filename: /lib/modules/3.0.0-17-generic/kernel/fs/cifs/cifs.ko version: 1.74 . . . vermagic: 3.0.0-17-generic SMP mod_unload modversions The ubuntu is running under virtualbox on my Windows 7 machine. the network is always working on the Windows side. Just logging what I am experiencing, and understand that there may not be any solution. ------------------------------------------------------------------------------------------ My own experience is that when downloading files using Opera and trying to navigate the file system in order to find the directory in which I wish to save the file, freezes Opera. If I try to open or save a file using a text editor, say gVim, then a similar problem is encountered. The freeze doesn't happen every time. I can't seem to work out why I experience a freeze only some of the time. Any freeze may last several minutes. I am only seeing this with Kubuntu 12.10 and 13.04. I did not see this with Ubuntu/Kubuntu 12.04. Disconnecting my NAS drive allows me to open and save files to any directory without any freezing at all. ** Affects: cifs-utils (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 kubuntu quantal raring ** Tags added: amd64 kubuntu quantal raring ** Description changed: The following is from Launchpad Questions: My CIFS network mount under Ubuntu 11.10 (Oneiric Ocelot) will freeze without much obvious reason. Idling for an extensive time is the only thing I can think of. Found many similar reports, eg: http://www.centos.org/modules/newbb/print.php?form=1&topic_id=35154&forum=55&order=ASC&start=0 http://serverfault.com/questions/307636/virtualbox-running-fedora-15-keeps-losing-its-cifs-mount-of-a-windows-share My symptom is, I am able to mount the CIFS Network drive fine. I can write to it and read from it, for quite a while. The problem is that eventually the mount will become inaccessible from linux. When that happens I can't run ls /mnt/z. Even sudo umount -l /mnt/zdoesn't work. In fact, when I run those commands they lock up the shell in which they were run. dmesg gives the following error - [ 72.250743] CIFS VFS: default security mechanism requested. The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 3.1 [ 126.807829] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0 [ 288.336825] hrtimer: interrupt took 4463392 ns [ 2036.256098] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0 [ 3622.991531] CIFS VFS: Server corpfs1 has not responded in 300 seconds. Reconnecting... [ 4722.294174] CIFS VFS: Unexpected lookup error -512 [ 4782.585254] CIFS VFS: Unexpected lookup error -512 [ 4855.705273] CIFS VFS: Unexpected lookup error -512 - - The reason that I suspect that idling for an extensive time is the culprit is that I can see that the system seems to have recovered from some kind of sleep mode, and remounting my prime HD (sda1). But I'm not sure. + The reason that I suspect that idling for an extensive time is the + culprit is that I can see that the system seems to have recovered from + some kind of sleep mode, and remounting my prime HD (sda1). But I'm not + sure. Here are more info of my system: - $ uname -rm + $ uname -rm 3.0.0-17-generic x86_64 - - $ modinfo /lib/modules/3.0.0-17-generic/kernel/fs/cifs/cifs.ko + $ modinfo /lib/modules/3.0.0-17-generic/kernel/fs/cifs/cifs.ko filename: /lib/modules/3.0.0-17-generic/kernel/fs/cifs/cifs.ko version: 1.74 . . . - vermagic: 3.0.0-17-generic SMP mod_unload modversions + vermagic: 3.0.0-17-generic SMP mod_unload modversions + The ubuntu is running under virtualbox on my Windows 7 machine. the + network is always working on the Windows side. - The ubuntu is running under virtualbox on my Windows 7 machine. the network is always working on the Windows side. - - Just logging what I am experiencing, and understand that there may not be any solution. - ----------------------------------------------------------------------------------------------------------- + Just logging what I am experiencing, and understand that there may not be any solution. + ------------------------------------------------------------------------------------------ My own experience is that when downloading files using Opera and trying - to navigate the file system in order to find the directory wish to save - the file, freezes Opera. If I try to open or save a file using a text - editor, say gVim, then a similar problem is encountered. + to navigate the file system in order to find the directory in which I + wish to save the file, freezes Opera. If I try to open or save a file + using a text editor, say gVim, then a similar problem is encountered. + The freeze doesn't happen every time. I can't seem to work out why I + experience a freeze only some of the time. Any freeze may last several + minutes. I am only seeing this with Kubuntu 12.10 and 13.04. I did not see this with Ubuntu/Kubuntu 12.04. Disconnecting my NAS drive allows me to open and save files to any directory without any freezing at all. ** Summary changed: - Navigating folders which include network shares in the folder structure cause an application to freeze + Navigating folders which include network shares in the folder structure can cause an application to freeze -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1116393 Title: Navigating folders which include network shares in the folder structure can cause an application to freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cifs-utils/+bug/1116393/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
