General :: Filesystem Corruption Possibly Caused By Bad Blocks
Nov 5, 2010
I'm trying to RMA a month old SSD, and they're giving me a hassle about it. The drive currently seems to work just fine, but I'm 95% sure that a few blocks went bad and corrupted some data about a week ago. I was able to mostly recover the data and correct for the bad blocks, but I don't really trust the drive anymore.
I'm running an up to date Debian Squeeze install with ext4 on this drive. My system started doing some bizarre things, to the point that it was unusable, so I rebooted it. As it was booting up, it complained about needing an fsck, which found dozens of non-trivial errors that it was mostly able to fix. It then proceeded to boot normally, except the drive mounted itself as read only (due to errors). Another fsck turned up a similar number of problems. This happened a couple of times before I ran fsck with '-c', which is supposed to scan for and work around bad blocks. That seemed to fix the problem, it hasn't given any more problems since then.
The manufacturer is refusing to RMA the drive unless it's completely unmountable right now this minute, saying that it was a one time problem that could have been caused by anything. Am I right in thinking that the problem has to have been with the drive if 'fsck -c' fixed it, or could something else be going on? If it was the drive, am I somehow being unreasonable in asking for a new one while the current one is "working"?
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Mar 18, 2011
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?
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Feb 11, 2011
I have a problem, my filesystem seems to show random corruption. For example:
[Code]....
This has happened to many files, they suddenly contain random garbage. Fsck seems to say the filesystem contains no errors I tried to run it multiple times.
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Jan 29, 2011
While trying to boot into the normal user the system aborts the login and tells me that /home does not have write permission.
The login manager gives:
Code:
If I log in as root and do a
Code:
Or to open some files, it works and no problem seems to exist.
All this happened for the first time after running luckybackup to fusion the old files of one home directory under EXT4 with the new files from my notebook (ext3, Opensuse 11.1 KDE3) in order to come to a unified home. But then the system did not boot any more. I tried to change the owner but some files did not have write access (not even as root, "the file does not exist"). So I thought I might have a a file system problem.
So I thought: unmount the /dev/sdb1 and then do a fschk on it. Runs and was perfect. So I did run it with forcing to control inode per inode.
No error.
So I thought: you screwed up the system. I then decided to reinstall OpensSuse11.3 from the scratch and create the same user for home. I formatted the rest (/swap /boot /root) and left only /home. Installation runs brilliantly, all ok, it comes to the login..................
Code:
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Feb 11, 2011
I have a problem, my filesystem seems to show random corruption. For example:
[code]...
This has happened to many files, they suddenly contain random garbage. Fsck seems to say the filesystem contains no errors I tried to run it multiple times.
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Mar 3, 2011
When I rebooted my system (RHEL 5.3 x86_64), I got the following error when it was booting up:
Code:
Full screenshot of the bootup error messages here: previous bootup error
So to try and fix this, I booted from the OS disk and did a linux rescue.
Here's some of the results of the commands I did:
Code:
Here's a screenshot of the output from fsck after it's done, notice it says 0 bad blocks but the system was modified:fsck results
I then reboot but now I get the errors:
Code:
Full screenshot of the startup errors I get now here: current bootup error
Does anyone have any ideas on how I can fix this? Was the fsck I did initially the correct thing to do to fix that initial group descriptor error or did I make things worse?
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Feb 9, 2010
I have been having problems with filesystem corruption on my eeepc 1000H for a long time now. I have tried using different filesystems, kernels and distributions (arch, slackware) to no effect. I am starting to grow suspicious that this problem lies somewhere else, as I haven't seen anyone else having similar problems in such a variety of scenarios.
I have tried testing my ram using memtest86+, didn't come up with anything after a full run through. I also have tried using e2fsck -c to check for bad blocks, it finds none. I had a go at using smartctl but wasn't really sure what I was doing. I did a long test and it came up with nothing anyway.
This problem is in addition to the problems I've been having with my intel graphics chip and KMS. A lot of the time there are lockups when booting into X, which can only be gotten out of by a hard reset. This is sometimes what causes the original filesystem errors. I've stopped messing around with KMS for now to eliminate this but my current system in unbootable. I'm guessing my disk is wrecked but have as yet seen no definitive proof. Can anyone recommend anything that I should do?
I am currently on ext4 with a custom kernel 2.6.33-rc6 (the stock kernel shipping with slackware does not have the elantech extension for psmouse included). When I was using arch, I was just using the stock kernels.
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Jul 16, 2010
I am working on a NFS server embedded on a PowerPC plateform (4650EX, 512Ram, 1 GB Ethernet) but i can't mount my exports folders from my client. Here are messages :
[Code]...
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Jun 25, 2010
I've been using Linux for a few years and have managed to find what I need searching (including this great site) until now. I have managed to mess up a substantial partition and don't want to possibly make a bad situation worse by bungling around an area I know next to nothing about. I'll try to explain it fully.I finally built a new PC (750GB internal HDD, 4GB RAM). I'm used to Kubuntu so I installed that (10.04 x86_64bit); partitioned sda1 1GB swap / sda2 OS 20GB ext4 / balance sda3 home ext4 for time being. Everything runs sweet. My old PC (very, PIII, but more recent 500GB internal HDD) partitioned sda1 486.31MB swap / sda2 OS 22.82GB ext4 / balance (442.46GB) sda3 home ext3 (ext3 because /home was inherited from an earlier install prior to Kubuntu going ext4). Old PC was having PSU prob. I don't have an external HDD or any other large HDD and not enough DVDRs for 280GB or so of data current in /home. So I backed up what I could risking the old PC working long enough. Got the critical stuff, business etc. There remained some 150GB or so, years of pictures, videos, info on car repairs etc (some but by no means all on semi annual DVDR backups). Free space current in new PC's /home partition ~500GB. So I took out the HDD from the old PC and put it in the new in order to copy the remainder then use it in the new PC; made sure BIOS of new PC indicated this 2nd drive did not have boot priority. The correct install booted.
To my surprise (maybe not yours?) during boot with zero indication, Kubuntu decided to use the 2nd HDD's /home partition for its new 442.46GB swap partition instead! I was horrified. I unmounted it immediately but... according to GParted the partition with all those files to copy is now:/dev/sbd3 File System: unknown 442.46GB Used: --- Unused: --- no flags
I was surprised by kubuntu changing its partitions without input and assuming a ext3 file system on a secondary HD for a 442.46GB swap partition. But, mistake's on me. Call it a lesson. Now I need to know more but don't want to experiment unduly on this drive and possibly make things worse: What should I do next?
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Dec 16, 2010
Is there a way to possibly launch a terminal by using a keyboard shortcut?
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Sep 25, 2010
How or where can I find more specific information about why it's failing?
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May 9, 2010
I was wondering how to get a script that i am writing with emacs over to possibly a flash drive or onto the desktop.?
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Mar 11, 2011
I am trying to mount a file image, like this
mount -o loop /tmp/apps.img /media/apps
But I get the following:
mount: you must specify the filesystem type
I try ext3:
mount -o loop /tmp/apps.img /media/apps -t ext3
dmesg says:
error: can't find ext3 filesystem on dev loop6.
I've also tried ext2, vfat etc. How can I detect the filesystem type of apps.img?
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Mar 24, 2010
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.
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Jun 22, 2010
I would like to test alphas (of distros and packages), but without doing so from my everyday environment.Obviously, frequent backups are essential for maintaining important files.Apart from that, what other measures can I take to prevent catastrophic data loss?Could a well-designed partition structure the chances of an alpha blowing up data on other partitions?
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Jul 20, 2011
Recently I installed Dropbox on a server to do file synchronization and it added " (Case Conflict 1)" to a whole bunch of my files! I realize now that it was caused by case insensitivity but I'm still left with hundreds of files that are in this renamed state. Is there a script in Linux that would allow me to recursively go through the directories and strip out this string?
i.e.
a (Case Conflict 1).jpg --> a.jpg
/myfolder/abc (Case Conflict 1).doc --> /myfolder/abc.doc
/myfolder/subfolder/mydoc (Case Conflict 1).pdf --> /myfolder/subfolder/mydoc.pdf
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Mar 1, 2010
I installed fedora 10 recently in my lap which had Windows Vista Home Premium. And now there is a prob tat i could access only Fedora. If i try booting into Vista it says
"BootMgr is missing Press ctrl+alt+delete to restart" I came to know tat I shud have actually installed fedora first before windows. Now i wanted to know how to Get both fedora and windows in my laptop
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Jul 13, 2010
Anyone ever see anything like this on bootup?
[url]
The display freezes/hangs, but the kernel is still kind of responsive because I can hit Ctrl-Alt-Del and after many seconds it reboots.
I can get it (Slackware 13.0) to boot this same kernel just fine from CD; it's only the normal bootup, after the install finishes, that this happens.
I enabled netconsole so I could see the messages, shown below, but there are no errors reported. The display corrupts and hangs at the "TCP cubic registered" message which appears to be unrelated to anything video-wise.
Code:
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Mar 14, 2011
I have a box that has been running fine for a few years primarily as apache/tomcat/mysql server.Just recently, it has started spitting out a bunch of messages and shutting down.The computer is running FC11, x86x64.If anyone can glean anything from the messagesIf you need any more info, let me know. I can get someone to start it up, and get as much as I can before it crashes.From looking at the messages, it seems like it could be something going on with the swap, but I'm not sure.The messages are below.(The box is on the other side of the country from me, so I don't have a ton of info, and it's hard for me to get someone to physically restart it for me...so it's kind of a pain.)(You'll see a lot of errors related to SSHD. I don't know if that's because SSHD is the culprit, or if it's because I was connected using SSH. For some reason I'm leaning towards it being something other than SSHD.)
Code:
setroubleshootd[2852]: segfault at 33cb1fe909 ip 00000033caf06e8d sp 00007fffe4bf4ec0 error 4 in libpython2.6.so.1.0[33cae00000+165000]
[code]....
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Oct 14, 2010
Kindly let me know the Linux tool to find out the memory corruption in a program. The tool could be built for PPC as well.
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Dec 11, 2010
Is there any way to find out which device/event caused Ubuntu (10.10) to wake up from the most recent sleep/hibernation? I am trying to troubleshoot some sleep issues on a new box, and knowing what's causing it to wake up would help. I did check /var/log/pm-suspend.log but all it seems to say is Sat Dec 11 22:18:27 GMT 2010: Awake.
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Dec 1, 2010
I have a home build computer that has data corruption problems at boot time. I have exhausted all the troubleshooting steps that I know to try. Do you have any additional troubleshooting techniques that I should try?
Symptoms: I run both linux(ubuntu, mint and fedora) and win7 on this machine.Sometimes I have just one installed.Other times both in a dual boot setup. The OS installs just fine.The system runs just fine for a while.Then it fails to boot.At first I can fix the boot problems with grub or bootrec (/RebuildBcd, /FixMbr or /FixBoot) as indicated by the error messages.Eventually the system fails to boot at all and I have to wipe the disk(s) and reinstall the operating system.The linux installs seem to last a bit longer. I typically have linux running for a month before the troubles start, but I have to repave and rebuild within 3 months. The windows installs last at most 2 weeks before troubles develop. The system is turned on for the day or evening then turned off overnight.Once the system has booted all checks that I have run pass. On windows fciv.exe, sfc.exe have never deteced and troubles. On linux tripwire shows everything unchanged. Chkdsk and fsck have never reported errors.
Hardware:ASUS M3A78-EM motherboard. 2x2GB kingston memory from the ASUS QVL for this motherboard.I have used two hard disks in this system.WD caviar black 640G (WDC WD6401AALS-00L3B2).Seagate barracuda 7200.7 (ST3120026A).On some rebuilds I have used just one of the drives, sometimes I have both installed.The DVD burner is a LG 4x (HL-DT-ST DVD-RAM GH22NS30 ).The power supply was originally an el-cheapo Allied unit that came with the case.That has since been replaced with a Seasonic X650.And that is all that is in this system. I use the onboard video, sound and network. I have never plugged an external device into the system (not even a USB flash drive!).
Trouble shooting so far...I have run the memtest utility from both the ubuntu CD and the windows DVD many times. Even when run for several day neither test utility has ever found a memory error.I have run the seagate and western digital provided test and diagnostic tools on both of the hard disks. I have done this on both the unstable ASUS M3A778-EM system and a very stable gateway system.I have swapped out the HDD cables several times.I have replaced the cables with new cables and with cables pulled from a stable system.Because the corruption happens only at boot time I suspected the power supply was having problems under the extra load of disk spinup.So, I replaced the power supply. No success.
I have run the system with every version of the MB BIOS from the version that it shipped with to the latest and greatest. The BIOS upgrades made no noticeable difference.I have enabled and disabled automatic updates on both win7 and ubuntu linux. That made no noticeable difference.That is it. That is all the troubleshooting ideas I have had.
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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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Jan 16, 2010
For the last month, when starting up or shutting down my laptop under Linux, I would get graphical corruption. Startup has an colour inverted, grainy rendition of what should be displayed while shutdown has a red background with all the text replaced by grey rectangles.
At the very least this affects Fedora, Ubuntu and Xubuntu. Windows is not affected. Outside of startup/shutdown the system is fine.
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Feb 28, 2010
So I built a new system few months to act as a development/"mess around with" server with an Asus Mobo and a Q6600 processor and 8 gigs of ram. Along with file, web and app hosting, I also do some virtualization on it... or atleast I had hoped to.
Ever since the first install, I've been randomly getting crashes and lockups. Sometimes it would just dump an error to the screen but stay alive, and sometimes it would dump an error and then lock up fully. The error mentions something about "kernel not tainted" etc. I will post the detailed error once it comes up again, as I have just formatted it again.
Other problems include downloaded files becoming corrupt. Files downloaded through any means (wget, torrents, ssh, ftp etc.) seem to randomly get corrupted (ie: the hashes are wrong).
I currently have one WD 150GB raptor as my primary OS partition, and 3 WD 1TB greens as my storage in an mdadm raid 5 array. At first, I had thought it was the raid array or it's drives causing issues. After painfully transfering the data off of it, I took the drives out and tried to run ubuntu with just the OS drive for a while. This still had the same issues. I then put in only one of the 1TB greens and had the same issue...
I downloaded WD's hardware diagnostic tool and ran full scans on all the drives. They all check out fine.
I left memtest running overnight and it had no errors either.
Most recently, ubuntu would not even install. It would get stuck at the stage of partitioning, and the keyboard lights would flash. After much googling, I tried popping in "noapic nolapic" to the end of the grub string, and it managed to install.
Now, I'm in a fresh system and just wgetted vmware server. However, it wont untar, I just realized the MD5 hash doesn't match!
So definately not the memory or the hds... I'm assuming it has to do with the APIC? From what I found on google, it seems as though this is only needed for the install.
Do I really need this to be on the boot string too? From what I understand, APIC allows processes to be divided out to the least loaded CPU. Having a quad core, I'd rather leave this on since it seems somewhat beneficial... I have yet to try putting this into the grub yet since I'm offsite and need
As a side note, this latest install is using just the WD Raptor as an OS drive.
And I'll post up the dumped errors if I get them again. There were none dumped out when the vmware download corrupted. The message format is very similar to the one here: [url
However, sometimes it mentions ext3 (or one of the other filesystem types I had tried with thinking it was a problem with ext3) Again, the error message is not the EXACT same, however the format is very similar...
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Jul 5, 2010
I am new to linux but will try and be as precise as I can. I have a Dell Insp. 1545 with 3GB ram with 10.04_64
Problem: Rather out of the blue upon login, from the time of entering password to the desktop, is MUCH slower. I have no splash enabled and there is some reference to AppArmour profiles (it sits there at this apparmour reference , then sits trying to load desktop). However, I have never configured apparmor. Finally, on last login, there was some sort of screen corruption prior to getting to desktop.
Prior to all this i noticed that firefox "blinked" when I was using it, and then said that it needed to shutdown/restart for updates. I did notice at that time two of my previous tabs sortof acted oddly (moved around then disappeared).
I have no SSH/Server software etc activated.
I did change visudo so that sudo timeout shorter than it was. However that is the only modification to the system recently.
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Jun 11, 2010
Is it possible to copy zipped (my.zip) files from Windows systems to Linux systems and unzip them without any corruption.
I know the command unzip is available, but I want to know if this copying from WIndows to Linux could lead to file corruption.
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Feb 1, 2010
I have a desktop PC which initially had the Intel D946gzis mobo, its chipset as video controller, some RAM and so. There I installed Debian without a problem alongside WindowsXP.
I've bought an ASUS HD 4670 video card, installed it on the PC and now the installed Debian does not work, while the Ubuntu live CD refuses to run no matter if I set acpi, apic on or off... it throws me some low memory corruption at position just like shown here. With normal configuration, Debian throws kernel panic (keyboard lights blinking). Anyone have faced this before? Ideas? Thanks!! (meanwhile, debian hides in a virtualbox :'( )
Edited: Tried Ubuntu 9.10 x64 (due to the fact i've a core2duo at 2GHz) and it throws a kernel-panic to me (flashing caps and num LEDs). On screen, can be read different lines with things like:
[ 1.957161] [] rb_erase+0xd6/0x160
[ 1.957266] [] page_fault+0x25/0x30
Could it be something about this new video card having ddr3?
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Jan 6, 2010
I've got a new hard drive, formatted it to ext3, and made a check for bad blocks using e2fsck.
It gave me this:
Quote:
I just would like to know where i can find how many bad blocks were found (perhaps one if it is using singular in sentence "Updating bad block inode."?), and what is/are the number(s) of located bad block(s).
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Aug 28, 2010
I know what are hard and soft limits, but what means "blocks" column in edquota utility?
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