Slackware :: Filesystem Errors After Backup With Dd?
Jun 11, 2010
in preparation for the update to Slackware64 13.1 I did a complete backup of my system with dd.
I used the Slackware 13.0 (not 64 bit) DVD to boot and executed the command:
# dd if=/dev/sda of=/dev/sdb
The command finished without any errors as expected. First I tried to boot the destination hard disk to check if the backup was successful and I can start with updating the source disk to 13.1. But at boot time I got the message that the last file system check is 197 day ago, the file system check started automatically and found errors which it could not correct. At this point I thought it was maybe a copy or a hard disk error and tried to boot the source disk. But the behaviour was exactly the same on the source disk. With the source disk I followed then the recommendation, logged in with root password and executed the recommended command which was something like e2fsck -v -h /dev/sda1. Then the system did a file system check and scrolled a lot of numbers over the screen. After a while it reported that it's ready and the system needs a restart.
I switched off and on again. Then the system bootet as usual, and seems to run okay at the moment. But now I'm unsure if really everything is okay.
What I'm confused of is, why the system reported that the last file system check was 197 days ago and why this was just after the dd backup. Shouldn't the automatic file system check at boot time run more often as every 197 days or mounts? I didn't change any default settings (as far as I know). The file system of the root partition is ext4 and my computer normally is switched on and off once every day.
My question now is, if this behaviour can have something to do with the dd backup.
Is my system after the file system check okay again, or should I expect further problems?
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Jun 12, 2010
I have been looking for a complete backup solution like "Acronis True Image Backup and Recovery" on Windows for Slackware a while.
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May 26, 2010
I'm gonna buy a 1.5 TB HDD to put there backups, videos, and stuff like that, and i was wondering what Filesystem should i put there considering that it will be used for backups (mostly) and I must count with that drive in case of something going wrong.
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Jul 13, 2011
I want to backup a lot of files on an external 2TB USB and sit it in a cupboard for the next 10 years. Looking for the most reliable filesystem for this. I don't care about speed, journalling, UNIX permissions or any of that stuff. All I care about is in 10 years time when the hard disk plates are rusted and unreadable and the drive hardly functions, what filesystem will be the easiest to recover my data from. Not ruling out FAT32 either for its simplicity but maybe there's a better filesystem for the job?
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May 4, 2010
Suppose I have a good backup of the / root filesystem. How do I recover the / root area? Suppose I have modified the root filesystem, perhaps I do an update some of the packages and regret it, and I want to get back to the system at the time of the backup. How do most linux people recover the root area of a system from a backup?
1) I wondered if I might put a System Rescue CD in and boot off it?
2) And then NFS mount the directory containing the backup? -In my case, I have made a good backup using rsync, to a directory elsewhere on the network.
3) And then, still booted off the System Rescue CD, mount the partition that contains the / root area in question?
4) Would I then clear or empty or delete the contents from the / root partition?
5) And then copy across all the files from the backup into the / root partition?
I ask these questions because of the (very nice) way linux OS is built entirely from packages... Am I being too complicated? (By comparison, I can see it is easy to recover user data.)If, instead, I simply recovered the backup straight onto the updated root filesystem, I wonder what it would look like if I then tried to verify it with "rpm -Va", for example? Surely, all the packages would fail the verification, because it would think it has a later version of each package from the update, but the actual files would have been overwritten by the earlier version from the backup?
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May 19, 2009
Using tar is it possible to backup different types of file system e.g.ext3, ufs, or any other file system. I know using dump it is not possible because it is reading through raw device. Then what about tar? Where I get more info about this? Means suppose I want to backup files from different file systems using tar then is it possible?
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Nov 7, 2010
i use the dd command to regularly backup my windows partition. basically i do:
PHP Code:
sudo dd if=/dev/sda1 of=./Backupfile.bin bs=100MB
form a USB HDD..
this works charms for backup and restore even over a remote shell.. i have even been able to remotely repair my system from vacation. now comes the problem: the partition has developed some I/O errors. Windows has notices and just marked some sectors as being broken/bad. But dd being Filesystem independent doesnt know and aborts when trying to read and getting an HArdware IO error.
my question: how can i fix this so i can still backup AND restore the partition? i cant afford a new HD at the time.
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May 5, 2011
Using redhat linux el5, when I had booted I had pbm repairing filesystem. So I run following commands
1. fsck -l
2. fsck
But I cannot solve the pbm. My pbm is I had important folder "backup" in root folder just I want to copy it in pendrive how to do it.
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Mar 1, 2010
I'm fairly new to Linux so I'm going to need a step-by-step guide to get me out of this rut. The install of Linux was fine but when I booted up I got this error. VFS: Cannot open root device "302" or unknown-block (3,2) append a correct "root=" boot option;here are the available partitions;
0800 78150744 sda driver:sd
0801 47428608 sda1 <-- this is my Windows partition
0802 30719552 sda2 <-- this is my Linux partition
0b00 1048575 sr0 driver:sr
0b01 1048575 sr1 driver:sr
Kernel panic - not syncing:VFS:Unable to mount root fs on unknown-block (3,2) I guessed from reading this error Lilo isn't pointing to the right partition to boot from? How will I fix this? I read another thread about boot problems on these forums and a guy said to do this:
#mkdir /slacktemp
#mount /dev/device /slacktemp
#chroot /slacktemp
#cd /slacktemp/etc <-- for me it told me that doesn't exist
#vi lilo.conf <-- couldn't do nothing and was frozen
#lilo -v -t -b /dev/device
#lilo -v -b /dev/device
The above solution did not work for me. Can anyone shed a light on a Linux rookie?
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Jan 10, 2010
I have an external 3.5" USB 250Gb HDD which is showing symptoms of hardware problems (repeated /var/log/messages errors of "reset high speed USB device using ehci_hcd"). This was originally plugged in to my NSLU2 running Debian Etch. I have just installed Ubuntu Desktop 9.10 to a spare Pentium-3M laptop and was hoping to copy the contents of this HDD to a fresh drive. However, I cannot mount it even read-only; mount -o ro /dev/sde3 /mnt/disk fails, and the /var/log/messages error is "recovery required on readonly filesystem", "write access unavailable, cannot proceed". I cannot understand why mounting a disk read-only should require write access. Following advice I googled elsewhere, I tried running mke2fs -n /dev/sde3 to try to list the alternative superblocks - but once again I got the error that the device was read-only. How can I go about accessing the data on this disk?
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Jul 3, 2010
As root, I use crontab to run mirrordir to backup directories. Everything gets copied over properly, but owner information isn't preserved and root is the owner of all the backed up files. I can deal with that, but crontab reports tons and tons of chown/chgrp errors for mirrordir every time I do back ups--which is every day--and the multiple emails to root of thousands of chown/chgrp errors is very annoying. The error is "Operation not permitted," but that doesn't make sense to me because the job runs as root (right?) and clearly the job is permitted to create the backup files, so why would it fail to chown and chgrp?
I've had the exact same setup on another server for years, and crontab has always run mirrordir without error. Any suggestions how to clear the errors on my new server?
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May 18, 2011
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?
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Jun 21, 2010
I've scoured the list of options for FS type in cfdisk for ext3 or ext4 to no avail. How then do I set the filesystem type for my partition to ext3?
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May 4, 2011
On installing the Nvidia driver using Nvidia's 173 legacy installer I noticed a load of errors which are recorded in the log below. The driver appears to be working. Is this something that I should be concerned about?Quote:
ERROR: Unable to open '/usr/X11R6/lib64/xorg/modules/extensions/libglx.so' for
reading (No such file or directory)
ERROR: Unable to open
[code]....
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Aug 7, 2010
The system is 13.1. Updated using slackpkg. All other software, with the exception of closed source Vbox, is installed via SB.orgDid a slackpkg update this morning for firefox 3.5.8 and there was also a glib upgrade (likely culprit). Now it seems that most of my software does not work. Did I do the upgrade wrong?
Code:
frank@hdwise:~$ firefox
/usr/lib/firefox-3.6.8/firefox-bin: symbol lookup error: /usr/lib/libgnome-2.so.0: undefined symbol:
[code]....
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Jun 4, 2010
I recently upgraded my VLC and Avidemux from AlienBOB's Repo.
With VLC media player 1.1.0-rc2, i get the following error when i try to play a video:
Code:
Warning: call to rand()
Warning: call to rand()
Warning: call to rand()
Warning: call to rand()
Warning: call to rand()
[Code]....
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Sep 15, 2010
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...)?
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Sep 15, 2010
I'm trying to format a device into XFS filesystem using mkfs command. Suppose I have a /dev/sda1 device with 4096 block and I want to format the whole thing, how can I execute the command? I keep getting various errors while executing it.
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Jan 4, 2010
I've been installing a fair amount of packages from slackbuild.org. Is it a good idea to backup the tgz files i get from building the .SlackBuild files?. I think this would save me time in case if i reinstall slack, then i can install these packages by doing just
Code:
Instead going through the whole:
1)Download source,SlackBuild script
2)Run SlackBuild script
3)finally installpkg if successful.
Will there be any problems with configurations if i don't do it from the beginning?. I thought of this because some packages took helluva time to download and compile.
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Jan 27, 2010
I have installed slack 13 and I want to configure the sistem to send automaticaly an email to an gmail account when I have some errors like power down for some minutes or a program crash. Can some one tell me exactly what i must do ?
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Dec 27, 2010
i upgraded my netbook to slack-current (32bit) and now When booting up dmesg shows these errors:
Code:
[ 10.770199] [drm] detected 63M stolen memory, trimming to 32M
[ 10.770267] i915 0000:00:02.0: irq 43 for MSI/MSI-X
[ 10.770280] [drm] set up 32M of stolen space
[ 10.770468] [drm:init_ring_common] *ERROR* render ring head not reset to zero ctl 00000000 head 02001000 tail 00000000 start 02001000
[Code]....
This happened with generic stock kernel and is also happening with 2.6.36.2 zen kernel. Is it something serious? Kde compositing still works, except it locked up few times when i was testing how windows wobble in kde, but not recently.
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Jul 5, 2010
So I don't like the new Amarok as much as the 1.4 version, so I want to install the older release. I download the source files, extract it and go into the directory. I type ./configure and recieve an error about kde-config not being installed, but "ln kde4-config kde-config" (or something like that) solved that problem. But now I encounter this problem after ./configure:
Code:
I already have a version of Qt installed (it's necessary for KDE, is it not?), but it's not between 3.3 and 4.0. I've read online about how if you install both the 3.3 and the version included on Slackware 13.1 of Qt there would be problems. I also read that you could find the necessary Qt files in the sources discs, but I'm not sure what files to install:
Code:
This is Slackware 13.1, by the way.
Do I have to shamefully resign my pride to Amarok 2.3 or can I install 1.4 in some way? And if you've gotten this far, thanks for reading and potentially responding.
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Mar 21, 2010
I'm trying to install virtualbox on slackware 13 and I'm running into header issues I think...it says it can't find libcap..any ideas? I downloaded libcap from slackbuild and tried to run make but I get errors (the second code block)
Code:
VirtualBox-2.1.4_OSE/kBuild/bin/solaris.sparc32/kmk_echo
VirtualBox-2.1.4_OSE/kBuild/bin/solaris.sparc32/kmk_cp
VirtualBox-2.1.4_OSE/kBuild/bin/solaris.sparc32/kmk_install
VirtualBox-2.1.4_OSE/kBuild/env.sh
patching file VBox.sh
Checking for environment: Determined build machine: linux.x86, target machine: linux.x86, OK.
code....
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Jan 31, 2010
I've been trying to compile and install different terminal emulators:Eterm, aterm, and libAfterImage for urxvt.
I've been getting all these errors, and it seems odd to me. I did some fiddling awhile back enabling KMS with my radeon, install custom packages for xf86-ati, mesa, and libdrm. Could that or some other fiddling have broken these dependencies?
Here is an excerpt, with the full error log attached and here:url
Code:
In file included from libungif/../xwrap.h:5,
from libungif/../asim_afterbase.h:23,
from libungif/../afterbase.h:36,
from libungif/gif_hash.h:24,
from libungif/gif_lib_private.h:5,
code....
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Jan 20, 2010
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
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Apr 25, 2010
how to disable backup files? It is kinda annoying when editing lot of files and I personally see no point having them.
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May 26, 2010
I'd like to be able to backup the settings for kalarm but can't seem to find them. Same for Dolphin. Anyone know where they might be located?
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Jun 30, 2010
This isn't truly Slackware specific but I thought who would know better than the Slackware community. My issue is I am tired of being tech-support for my in-laws trying to keep their XP and Vista desktops functioning and would like to convert there setups to Linux. Their needs in terms of applications etc are very basic, primarily internet surfing and photos. The one application they use very frequently is a DVD backup software that runs on XP called DVD X Copy, and basically it is a one click rip and burn process for them to make backups of their DVD collection. I personally do not own and have not used such applications before so I am not familiar with some alternatives. I know of lots of programs that Rip or Burn DVD's very well but what I am looking for is a dead-simple way on Linux for them to maintain that functionality. Anything involving more than a couple steps would be challenging to them as they are very inexperienced PC users and slightly technophobic. I looked on Wine to see if the program would run under Wine but did not see it listed in the database.
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Nov 2, 2010
I screwed up and managed to overwrite my MBR with one that had a different partition table, thereby losing access to all of my partitions and data. Now, I was semi-smart and backed up the MBR before I did this, but the "semi-" part is that I backed it up onto the hard drive in question because I was thinking only in terms of losing my ability to boot from the MBR, not the whole partition table.
So...as I see it my only means to recover my data is to find and recover that 512 byte block on the disk media. Having read a little bit, this seems possible given that I know to look for a) the MBR signature at offset 510, b) the partition status byte at offset 446, and c) the partition type byte at offset 450.
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May 7, 2010
An error accoured during the root filesystem check.
Installed fresh Slack 13.0 version, at 7GB virtual hdd, with cfdisk, created two primary partitions, 500 mb for swap, whats left, to second partition, made it bootable, installed full software package, used all default selections, only refused to configure network. At first restart, I got a screen with many statements, that looks like errors, and a last one, that looks like critical error.
An image I have been working on Windows my whole life and only worked with already installed linux systems a bit. Installed RedHat and FreeBSD on VirtualPC previously and succesfully. Now, I stumble upon this error and cant think of next step.
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