System hangs when nfs connection is lost
This is the situation:
I have a server which is located in the basement. The server exports a few directories which I mount on my desktop using NFS. From time to time, the connection gets lost. The server is also not always on. I can't change that part, so I worked out a script which notifies me when it's going down, and when it's back up again. It also mounts everything back. However.. As soon as I loose the connection, my desktop seems to be gone. KDE doesn't work, but I can use a few applications like Konsole, google-chrome, firefox, stuff like that. But the plasma-desktop around it hangs. As soon as the connection gets back again, everything works. I have this issue only when my desktop is running while I loose the connection to the server. If it's down when I start my desktop, everything works properly. Unless the server comes alive, the nfs directories are mounted and the connection is lost again. I'm not really sure if this is a networking case, it could also be KDE related, but I figured this was the most reasonable place to put my topic in. My hardware: linux-bbdu:~ # lspci 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 02) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 01) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) 01:00.0 VGA compatible controller: nVidia Corporation G84 [GeForce 8600 GT] (rev a1) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) 04:00.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) MPEG-2 Encoder (rev 01) My kernel: linux-bbdu:~ # uname -r 2.6.31.12-0.2-default My linux distribution: linux-bbdu:~ # cat /etc/SuSE-release openSUSE 11.2 (i586) VERSION = 11.2 My KDE version: linux-bbdu:~ # kde4-config --version Qt: 4.6.3 KDE: 4.3.5 (KDE 4.3.5) "release 0" kde4-config: 1.0 I hope I gave enough explanation of my problem, and thanks in advance for your answers. |
Yeah, that happens.
Try mounting with the "bg,soft,intr" options. See "man nfs" for an explanation. Also try unmounting the shares when they go away. "umount" won't work, and "umount -f" probably won't either, so try "umount -l". Try to stop any processes that are trying to use the mounts first. See the man page for umount for -f and -l. |
In this situation, it might be best to use automount.,
If a connection is dropped, the mount will auto unmount - and hopefully solve the hanging problem.. |
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But it looks like it's solved now, thanks a lot! Quote:
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Not quite; automount (autofs) is a separate program. "noauto" in fstab just prevents it from being mounted at boot.
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Server hung state
I have small doubt in rhel6. recently i facced one problem.anyone knows the issue plz rply to me
If system is in hung state, what steps you will take to resolve the issue? |
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