General :: Unpluging Mounted Shared Dir - Will It Crash The Filesystem
Nov 19, 2010
For example we have a PC with Linux and, let's say, ext4. It is connected to another PC with Linux and Samba-shared dir.First PC mounted shared dir of the second one. So it's in the filesystem, for example in "/mnt/000/". What will happen if I unplug the net cable from first PC? Will ext4 on the first PC crash so I'll have to perform fsck? I know that hot unpluging of mounted HDD probably will make filesystem read-only available and generally damaged.
I've had a look at some similar threads but as I'm very new to linux they're already a bit technical for me. Sorry, this calls for someone with patience. I gather from other threads that disconnecting an external drive without unmounting is a no-no, and this seems to be the likely cause. Now the disk is read only and I'm unable to change any settings through the usual control panel on ubuntu. I'm just not familiar with the terminal instructions. I tried to cut and past a few command lines from other threads but I got some warnings that proceding could damage data. Like this one: WARNING! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
I am very new to linux, and I have a question regarding the filesystem check (fsck). The power recently went out and when I tried to restart linux the following error appears:
*/dev/sda1 contains file system w/errors, check forced it then goes on to say..
*An error occured during the file system check. Dropping you to a shell; the system will reboot when you leave the shell. Give root password for maintenance (or type Control-D to continue) I wasn't sure what to do, but checked some other online forums and they suggested running fsck manually - so I typed in the root password - and used the command, "fsck -A -V ; echo == $? ==" it then gave the following message
*WARNING!!! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage *Would you like to continue (y/n)
Again, I wasn't sure what to do so i just checked no. I then manually turned off the computer and was prompted at the beginning to press Alt-3. I was brought to another screen and it informed me one of the drives was degraded and suggested rebuilding the array. I tried doing this, but it still brings me back to the original error of, "/dev/sda1 contains file system w/errors, check forced," and the process continues.
Also, when I tried to rebuild the array, I didn't backup any of the data on our home directory before doing this (which was probably a big mistake). After being prompted to type the root password, I was able to give the ls command and look at all the directories...the home directory where our data was stored was empty and I am afraid I may have lost some information. Is there a possibility that data was lost when I was trying to rebuild using the old drives?
I run Windows Vista and Ubuntu 9.10 dual boot. Today while booting windows, it informed me that there was something wrong with my hard disk and it would perform a check, and made some fixes.
Only when I wanted to boot into ubuntu again did I realise that the disk check had corrupted my linux partition. Ubuntu's load screen shows up, but just before the login screen it says that the filesystem could not be mounted.
Is there a way I can fix this? And how do I prevent windows from doing the same in the future?
I've ran fsck -c on the (unmounted) partition in question a while ago. The process was unattended and results were not stored anywhere (except badblock inode). Now I'd like to get badblock information to know if there are any problems with the harddrive. Unfortunately, partition is used in the production system and can't be unmounted.
I see two ways to get what I want: Run badblocks in read-only mode. This will probably take a lot of time and cause unnecessary bruden on the system. Somehow extract information about badblocks from the filesystem iteself. How can I view known badblocks registered in mounted filesystem?
I am trying to do a fsck on my ext3 partition, but so far failed to let the system come up in single user mode and having the partition mounted read only. It says in the kernel parameter that it is read only (RO) but still mounts it RW. A remount with mount -o remount,ro does not work, since / is always busy. what to do to get a fsck done? I don't want to boot into a rescue system, this should be possible on a running system (like Windows does it, when rebooting)
I am trying to figure out a totally odd behavior of the ext3 filesystem mounted in Ubuntu 9.10. There is a Korn Shell script, part of which does the following in the loop:
while ((1)); do mv dir1/file dir2; if [[ ! -r dir2/file ]]; then echo "ERROR" ls -l dir1/* dir2/* exit 1 elif echo "OK" fi done
Given that dir2/file always exists and that I do not move it asynchronously with "&", my script should never hit the "ERROR" statement. The odd thing is that it does, and quite randomly (no pattern at all). However when it does hit the ERROR case, ls -l prints that file is in dir2 and it is readable! I tried using "-e" instead of "-r" test - no luck. I never seen anything like this in 10 years of my programming experience. Same script worked fine on Fedora 11, and yet it wouldn't work on Ubuntu.
When i type the df command i see that /dev/hda1 as a filesytem that is mounted at '/'(root). Is /dev/hda1 a filesystem. I thought that it is a partition on my hard disk that contains the root file system.
I'm having the following issue on an appliance using uClinux and MTD to access a NAND flash memory: Although the kernel has Yaffs compiled and it seems able to access the NAND, it doesn't create devices (/dev/mtdblock? and /dev/mtd?):
Code: root:~> dmesg Linux version 2.6.19.3-ADI-2007R1.1-svn (root@ubuntu) (gcc version 4.1.1 (ADI 07R1)) #1 Thu Feb 10 15:37:08 CET 2011 Blackfin support (C) 2004-2007 Analog Devices, Inc. Compiled for ADSP-BF532 Rev 0.5
I installed OpenSUSE 11.1 on a friends computer after having a lot of trouble from ubuntu, and because I use it. It was working great when she got it home, but it locked up randomly and wouldn't unfreeze so she turned it off and when she rebooted She got an error about there not being a file system present and that she needed to run a mount command, which didn't work. After that, now it just says that there is no files system present and you ge tthe basic prompt. I had her run a live cd and run Gpartd and check and repair the partitions, but it did nothing.
I want to have a shared folder mounted on startup and I put the following in my fstab: Code: VMShare /media/VMShare vboxsf defaults,gid=1001,dmask=002 0 0 Where did 1001 corresponds to the virtual share group.
When I boot up the permissions are as follows(from ls -l): Code: drwxr-xr-x 1 root virtualshare 68 2010-10-27 15:45 VMShare/
So I'm curious why it's group permissions aren't the same as owner? In the fstab I put dmask=002 which should lead to rwxrwxr-x so basically full permissions for owner and group and read/execute for public. However thats not what I'm getting. Also once I get this working correctly am I going to have an issue if the virtualshare group isn't a users primary group? On some older unix servers I ran into this issue, hopefully it won't matter as long as the user in in the group.
I'm using fedora8.When i mount shared folder on windows,it was mounting and i can browse the files and directories in terminal as i have full permissions on that.But,when i open the mounted directory in GNOME Environment,it was saying you did not have permissions to see the contents,every directory and file has been locked.
At boot time, before entering Runlevel 3 the HDD will go mad when mounting tmpfs on /dev/shm...
Code:
EXT3 FS on sda1, internal journal EXT3-fs: mounted filesystem with ordered data mode /dev/sda1 on /boot type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw) INIT:Entering runlevel 3
It will go on and on at the tmpfs on /dev/shm type tmpfs (rw) until i press ctrl-C...then I will stop whatever it is doing, let the hdd rest a bit, and resume normal boot..
I mount the shared drives (on a Windows Server 2003) and I can access them from my home directory. Everything is mostly fine. But I also get desktop icons for the shared drives, which I don't like since I prefer a bare desktop. Sometimes I have deleted desktop icons from /usr/share/dist/... but these are not there.
how can I disable the automatic file system check after power outages or system crashes? The check sometimes prompts for a key (ignore, repair etc.) but the panels do not have a keyboard.
I need a cluster-safe filesystem for a SAN shared storage in Slackware. Red Hat's GFS is the best/only solution?Given GFS support in a custom kernel, what about tools (mkfs,mount...)?
as far as i know Debian "Squeeze" has a disk check utility, but you can't run this on a mounted filesystem. Is there a way to trigger this during boot (before filesystem is mounted) ? I can run this once a month to keep filesystem healthy....
I think that the solution is very simple, but I cannot reach this solution. I'm trying to build an B.so that uses A.so.
A.so is compiled using C; B.so is compiled using C++;
Inside "Aso.h" file I'had declared:
Code:
#ifdef __cplusplus extern "C" { #endif
[code]....
There's no error to compile that, this library seems to be compiled correctly, but using the "nm" command the Aso.so functions appear with "U" of undefined. Trying to build an executable using the Bso.so library, I got this error: /lib/../lib/libBso.so: undefined reference to `foo(int, int, int)' I think that to solve this problem it's only link the Aso.so with the .o files generated at the compilation phase of my Bso. Using the "ldd" command I'm able to see that Bso.so depends on Aso.so, so what am I missing?
I have an application consisting of different processes and all these processes are linked to shared libraries. I start the application (spawn all the different processes) as say user1. Now with the application up, if I run a process p1, the process gets activated and works. However, if I start the same process p1 as a different user, say user2, which is completely different from user1 the process complains of
"error while loading shared libraries:...."
I set LD_RUN_PATH both in compile and runtime environment. LD_LIBRARY_PATH is set correctly in both places.
All the above works if I set the absolute path of the required shared libraries in /etc/ld.so.conf file and rebuild the /etc/ld.so.cache
Alright, just loaded a fresh copy of OpenSuSE 11.3 x64, went to update manager and let it update, came back and computer was shut down. After booting it back up, I cannot update any software, nor run any commands.
Here is my output:
Code: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory I've tried searching for this error, some people came back saying to run this:
Code:
But all that happens is this:
Code:
Nor ls work either so I'm stuck and thinking about a reinstall.
I don't understand how this system could be so messed up after a failed update.. Used to trust SuSE, not sure anymore after this incident..
Installed Skype but it wont launch. Running the latest Opensuse Gnome. Ive uninstalled it and reinstalled several times but always with the same error. When I try to run it from terminal I get this:
ig@linux-ljqk:~> skype skype: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory
Ive just now uninstalled skype and tried reinstalling it again via yast, but now I get the following error [PK_TMP_DIR|dir:///var/tmp/TmpDir.xftzR0] Repository already exists.
just installed Ubuntu 10.04 and installed the flightgear package and the fgfs-base package. I ran fgfs from a terminal and got this error:
Code: $ fgfs fgfs: error while loading shared libraries: libOpenThreads.so.12: cannot open shared object file: No such file or directory $ So then I did: Code: sudo apt-get install libopenthreads12 and it gave me these errors:
I'm trying to run Kega Fusion on my laptop, which can now FINALLY run Linux (ATI drivers finally work on it), and I can't get the emulator to work..
Code: brandon@brandon-laptop:~/Desktop/Fusion$ ./Fusion ./Fusion: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directory brandon@brandon-laptop:~/Desktop/Fusion$ uname -a Linux brandon-laptop 2.6.32-24-generic #38-Ubuntu SMP Mon Jul 5 09:20:59 UTC 2010 x86_64 GNU/Linux brandon@brandon-laptop:~/Desktop/Fusion$ Help? I have the ATI proprietary drivers installed. I tried without them and it still wouldn't work. (And OpenGL is seemingly working as Compiz Fusion is running. I also tried with Compiz disabled but the same error pops up).
I'm running lucid 32-bit. I get this error when I try to run the installer for Unreal Tournament GOTY:
Code: Verifying archive integrity... All good. Uncompressing Unreal Tournament 436-multilanguage.goty Installer. /home/computer/.setup1548: error while loading shared libraries: libgtk-1.2.so.0: cannot open shared object file: No such file or directory computer@computer-desktop:~/UnrealInstall$ I tried installing libgtk1.2 (as told by some people in other threads), but couldn't do that:
Code: E: Couldn't find package libgtk1.2 However, I checked that I do have libgtk2.0 So what should I do?
After finally getting my wireless/graphics drivers working yesterday (thanks to this forum ) I startx to realize that not a single KDE/Qt application will launch, along with Firefox, or Chrome/Chromium. (I did a full install from the DVD, not deselecting anything, and when I upgraded to -current, I also did the same.)
Ark said:
Quote:
ark: error while loading shared libraries: liblzma.so.0: cannot open shared object file: No such file or directory
but I managed to fix that one by commenting out 'aaa_elflibs' in /etc/slackpkg/blacklist (on a recommendation from #slackware), and running slackpkg upgrade-all again, but that's the only one (afaik) that was fixed. Ark still doesn't work, but it doesn't show that error anymore. When I run it, a box pops up that says "Unable to find Ark's KPart component, please check your installation."
Kate still says:
Quote:
kate: error while loading shared libraries: libkemoticons.so.4: cannot open shared object file: No such file or directory
Now, konsole, firefox, and Chromium's errors are a little different.
Konsole:
Quote:
konsole: symbol lookup error: /usr/lib/libphonon.so.4: undefined symbol: _ZN9QMetaType15registerTypedefEPKci
Firefox and Chrome basically say the same thing
Quote:
/usr/lib/firefox-3.6.13/firefox-bin: symbol lookup error: /usr/lib/mozilla/plugins/skypebuttons.so: undefined symbol: _ZN9QListData11detach_growEPii
again, I am completely baffled here, as I had kate, konsole and ark running before I upgraded to -current.
