fsck - check and optionally repair a file system.

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Recover ext3 files from hard disk with bad sector [duplicate]

Possible Duplicate: Recover formatted ext3 partition I have a folder of about 5GB that suddenly disappeared. When I checked its hard disk, I found out it has bad sector for about 2-3MB on ...
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361 views

iostat report huge writes to drives that's not even mounted

root@host [~]# fsck /home2 fsck from util-linux-ng 2.17.2 e2fsck 1.41.12 (17-May-2010) /dev/sdb1: clean, 6018617/91578368 files, 54524459/366284000 blocks root@host [~]# fsck /home4 fsck from ...
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602 views

IO Error on RAID5 member. What to do about bad blocks?

I recently got an IO Error on one of my RAID5 members; on a 3 disk fakeRAID array. I didn't notice at the time - there was only a message in /var/log/kern.log - so I had continued running the machine ...
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1answer
788 views

Error mounting drive with fstab

I have an small server in my house with an external usb 2TB hard drive: /dev/sdb1: LABEL="Data" UUID="eedc3098-221d-4800-b8b4-efa4fef23f5f" TYPE="ext4" I have the next line in /etc/fstab: ...
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Can I make low-level changes on a root fs mounted RO?

Related to this question: having a root file system that had to be mounted read-only (say it's completely broken), can I reformat the partition or dd a older backup image on top of it (and then ...
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1answer
1k views

Where is fsck startet for the root filesystem at boot?

I want to extend an existing Debian 6.0 system so that it is able to automatically fix a corrupt root file system by restoring a separate image. That process should start automatically instead of the ...
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1answer
639 views

Slow boot, how to program fsck to run like a cron job?

Sometimes my web server crashes, and it may take hours to boot. I've been told fsck might be the culprit, because it can only be run during boot, only runs after X days and Y mounts, and if the server ...
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Bad superblock after server crash

My server (CentOS 6) crashed, and it now kernel panics on boot. It's currently using a mdadm RAID1 array with two 1TB drives. vg_server2422-LogVol01 is / vg_server2422-LogVol00 is Swap ...
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Is there a Linux tool for defragging NTFS partitions?

Can NTFS partitions be defragged within Linux? Does fsck work for this? (Here and there I've seen a recommendation to use fsck -t ntfs --kerneldefrag /dev/XXX. Would this work?)
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Why does e2fsck fail during boot, but not later?

When booting my Debian server, I'm presented with the following error concerning my external hard drive: /dev/disk/by-label/elements: The superblock could not be read or does not describe a correct ...
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5k views

Should I run fsck on boot for an amazon ec2 image?

I have an Ubuntu micro instance running on amazon EC2. Recently after logging in I was alerted: *** /dev/xvda1 will be checked for errors at next reboot *** I've rebooted a couple times using init ...
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Why was fsck priority introduced in /etc/fstab?

Inside the /etc/fstab file, in the sixth column, there is a number that corresponds to whether a filesystem should be scanned for errors. Possible values are: 0 - skip 1 - high priority 2 - low ...
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Resolving unmet installation dependencies; file system problems

Somehow part of my ext3 file system got corrupted and large portions of my python installation got all sorts of messed up. The only thing I could notice immediately was Python raising a missing module ...
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3k views

What is in fsck section in fstab?

I have a basic understanding of fsck utility but what does "fsck" section in /etc/fstab denote? It has values 0, 1, 2 what are these values? Googling says 0- it wont be checked 1- will ...
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1answer
2k views

Significant difference in speed between fsck using ext3 and ext4 on Debian Squeeze

Recently I installed Debian Squeeze, first using ext3 and then again using ext4 on the same machine. The automatic fsck done after a certain number of mounts is much faster using ext4 (about 1 min) ...
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How to repair an ext3 partition after broken resize operation?

I was using gparted to resize a near-terabyte ext3 partition, adding about 40 GB to the left. After nearly 12 hours of moving data (and with 23 more hours estimated to remain) the system hung. Now ...
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1answer
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How does the Unix “fsck” differ from the Windows “chkdsk”?

What are the differences between Unix's fsck and Windows' chkdsk?
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Did `sudo init 6` cause my file system to be corrupted?

I was developing some code and had open qtcreator (software development IDE), gnome-terminal, and possibly firefox. I needed to restart to test something. So i restarted using sudo init 6. When my ...
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1k views

How can I diagnose and repair missing drive space?

I have a small ext3 / partition on a 2T drive which appears to have a discrepancy in its free space. How can I determine what is causing it and how it can be fixed. After trying everything I could ...
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5k views

What does fsck -p (preen) do on ext4?

I was reading a blog post about filesystem repair and the author posted a good question… fsck -p is supposed to fix minor errors automatically without human intervention. But what exactly will it fix ...
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1answer
3k views

e2fsck progress bar?

How can I see the progress of e2fsck in the terminal? Are there any pv like ways? For example how can I see how far along this command is in progress: e2fsck -f -y -v /dev/sdb1
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How can I fix linux disk without unmount it?

I had large file 200GB in my ext2 disk, then I deleted it(three are no files in Trash). And I haven't gained any free space. I don't want to use fsck as it requres me to unmount disk. I were windows ...
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1answer
2k views

How to view bad blocks on mounted ext3 filesystem?

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 ...
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669 views

How to test file system correction done by fsck

How to make sure that fsck is correcting corruptions while keeping the integrity of file system? Suppose clients are writing lots of files through NFS to server, and there happens something that ...
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e2fsck: unable to set superblock flags on LogicalVolume

When I boot my machine either in normal mode or runlevel 1 it throws following error and I'm unable to boot the machine: checking filesystems /dev/MyGroup/LogVol00: UNEXPECTED INCONSISTENCY; RUN ...