A filesystem is a method of storing and organizing computer files and their data.

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ext3 root filesystems goes read-only with aborted journal even after repairs

Short version: ext3 root filesystem on rackspace (xen) VM detects aborted journal on boot and mounts read-only. I've attempted to repair this from a rescue environment with tune2fs and e2fsck as ...
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4answers
204 views

Ways to organize and access frequently visited directories and files?

In my Ubuntu, I have added some frequented directories to the bookmarks of Nautilus, for visiting them quicker. Nautilus can consume a lot of memory, when it has been kept open for long and there ...
3
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2answers
42 views

Does “mount -o remount,ro” flush filesystem buffers?

On Linux, does mount -o remount,ro flush filesystem buffers/cache, or should I also run sync to achieve that?
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1answer
921 views

Sphinx Search shutting down after `FATAL: accept() failed: Too many open files`

I'm running Sphinx Search Server V2.06 ( the latest stable release ) on an Amazon EC2 with Linux CentOS. In general it is running fine, but the searchd.log is showing this error over and over with ...
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1answer
45 views

Difference between 'sync' and 'async' mount options

What is the difference between sync and async mount options from the end-user point of view? Is file system mounted with one of these options works faster than if mounted with another one? Which ...
5
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1answer
36 views

What filesystem should I choose for an SSD? [duplicate]

I am going to set up a new Linux system on an SSD drive. Does the filesystem choice make a difference for them? Should I go with the default ext4, maybe try XFS, or does it just not matter?
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How to force drop all partitions and erase disk from terminal?

My question is in fact related to OS X, however I'm using Linux tools to resolve my problem. I'm trying to delete all the partitions on my SSD drive and create new GUID (HFS+) partition table. Native ...
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1answer
69 views

What Causes Maintenance Shell Segmentation Fault?

I'm running Ubuntu 14.04 Trusty Tahr in a Microsoft Hyper-V virtual machine on Windows Server 2012 R2. I've stopped the VM, replaced an EXT4-formatted virtual disk volume (/dev/sdb) with a new ...
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2answers
636 views

Querying an overlayfs

I'm looking for a way to query a mounted overlay filesystem (overlayfs) in order to check it's upper and lower directory, but until now I haven't found any suitable command for that. Is there is a way ...
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Script to monitor folder for new files?

How do I detect new files in a folder with a bash script? I would like to process the files as soon as they are created in the folder. Is this possible to do so or do I have to schedule a script with ...
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15 views

Is it safe to use lvresize -r to reduce LVM

I know I can increase the size of file system and LV in one go using lvresize -r but is it safe to use the sam approach to reduce a LV file system ? here is the man page of -r -r, --resizefs ...
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1answer
25 views

How do I find out what filesystem drivers are compiled-in into the linux kernel?

On a running linux system, what is a portable (among linux distributions) way to find out what filesystems the current kernel has compiled-in (not through modules) support for? Consider for example ...
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1answer
97 views

read only root filesystem

Somehow my Debian went to read only in root file system. I have no idea how this could have happened. For example when I am in /root folder and type command nano and after that press Tab to list ...
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2answers
5k views

Format external hard drive to linux compatible file system

How do I format my external hard drive to a very Linux compatible file system?
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0answers
18 views

Busybox compilation fails - networking/nslookup.c Error [closed]

I'm trying to compile Busybox with Buildroot Cross-Compiler. Here are the steps: Download Busybox and untar it wget http://www.busybox.net/downloads/busybox-1.22.1.tar.bz2 && tar xjf ...
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0answers
13 views

how to migrate a squashfs system to another filesystem that's read/write

Well, basically what i want to do is copy all of my router's files (even the dev file (because i'm running busybox)) to my usb flash drive and let my router by default boot from the usb device. it ...
6
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1answer
582 views

Why could the size of the “dot” file “.” exceed 4096?

Today I found an "empty" directory with a size of 4MB. It had no visible contents, so I tried ls -lah. This showed me some hidden files (not very large). Searching for the reason why the directory ...
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3answers
152 views

Files are missing and I want to know what happened to them

Somehow some files are missing in a directory and I would like to know what happened to those files. Who has moved/deleted them? How can I investigate? Can we get a history on a directory? These are ...
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1answer
35 views

Formatting an external HDD with Bash script

At my workplace we have an external HDD connected to a NAS device (Synology). There is a backup tasks which runs weekly and fills the external HDD after a while. Unfortunately the Linux-based OS of ...
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2answers
1k views

Why is JFS so obscure?

When I first got into using Slackware years ago I quickly learned to love JFS over ext3 or reiserfs given that it was reliable and if there was an unclean shutdown, its disk checking was very very ...
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2answers
138 views

Why can I access to my C: or D: drives from Ubuntu?

Why can I access to my C: or D: drives from Ubuntu when I install Ubuntu 14.04. Why does this happen?
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4answers
142 views

Ext4 - How to enable extra sanity, checksums, validations, tests of any kind?

I'm running Ext4 on a harddrive, and to be perfectly honest, I don't really trust the drive because it's old and has a few badblocks. I have nonessential data on the drive, so if it died tomorrow, ...
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largefile feature at creating file-system

Is useful to use -T largefile flag at creating a file-system for a partition with big files like video, and audio in flac format? I tested the same partition with that flag and without it, and using ...
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1answer
713 views

Mount exFAT file system as user without hardcoding

I've "solved" the following problem, but not in a desirable way. First, mounting exFAT file systems in Linux was truly as simple as this site says. The catch is, "as long as you are root." A user ...
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1answer
302 views

Hang during 'touch' operation on NFS mount

I have two NFS clients mounted to an openfiler 2.99 NFS share at 192.0.2.3: 192.0.2.1 mounts 192.0.2.3:/mnt/nfs01/volnfs01/share01 with ...
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2answers
38 views

dd to clone to smaller sdcard

One of my Raspberry Pi's is using a 4GB SDcard for the root/boot filesystem. As seen when mounted on another system: Disk /dev/sdc: 3904 MB, 3904897024 bytes 121 heads, 62 sectors/track, 1016 ...
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1answer
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How the contents of a directory are impacted when a file system is mounted on that directory [duplicate]

How the contents of a directory are impacted (and when and/or if they are available for use) when a file system is mounted on that directory.
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1answer
63 views

What makes fsck so slow on big filesystems?

I have over a dozen of filesystems on my OpenBSD server with 12GB DDR3 and several 1.5TB HDDs. All filesystems themselves are generally between 8GB and 64GB in size. I've noticed that even by ...
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4answers
84 views

Mount filesystems after boot to avoid fsck delay for sshd

I'm trying to optimise the overall downtime and improve availability in case of system failure. I'm specifically concerned about the reboot (e.g. after a kernel panic) taking so long that I don't ...
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1answer
26 views

Recover an overwritten file [duplicate]

I had a linux plain text document file with close to 100000 lines, a size of 10 Mb. I accidentally overwrote the file via python code. But I got an exception in the middle of the code and think the ...
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3answers
245 views

Why does mcedit recommend removing hardlinks when saving a file?

Whenever I use mcedit to edit a file that is hard linked somewhere and I want to save the file, the editor asks me if I want to remove the hard links. Is that common behavior on Linux or is mcedit ...
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4answers
277 views

Why is writing so slow on raw device, and so fast on filesystem (USB key)?

I have a USB key that I am trying to benchmark quick'n'dirty on Linux. I'm testing write bandwith. dd on raw partition I created a partition starting at sector 2048, then did a 4 GB sequential ...
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Trouble getting Exfat formatted drive to mount

I've just performed a new install of arch linux (3.15.3-1) on a macbook pro 8.2 All of my data is on an exfat drive, and I've installed exfat-utils. However, when I try mount -t exfat /dev/sdb1 ...
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2answers
696 views

Debian won't boot: udevd fails to load device sda and sdb

I can't boot my Debian system, I got this error during boot up: Driver 'pcspkr' is already registered, aborting. I have solved this by adding blacklist snd-pscp to /etc/modprobe.d/blacklist.conf ...
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1answer
49 views

Too many levels of symbolic links

I created this file structure: test/src test/firefox When I run this command: ln -s test/src test/firefox I would expect a symbolic link test/firefox/src to be created pointing to test/src, ...
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1answer
20 views

Do files with equal name conflict in unionfs (aufs)?

I just tried to mount two folders in one using aufs on Debian 7 wheezy. The command I issued is the following: mkdir /test1 mkdir /test2 mkdir /test mount -t aufs -o dirs=/test1:/test2 none /test ...
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2answers
393 views

File system CRC check

I know that before running the kernel, u-boot (the boot loader) will check the kernel image CRC. Only if it is correct it will go further, else it will give a "Bad CRC" error. I want to do same thing ...
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file system and block size [duplicate]

I'm just learning about i-node and get confused on difference between file system block size and disk block size. Please explain what the difference between them or give me some useful link resource ...
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1answer
554 views

Preventing access blocking while external HDD spins up?

I have an old laptop where I installed Debian along with a samba server which I am using to share read-write access to 4 external hard drives, which I use to stream my media from. All works fine, ...
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4answers
3k views

How to clone/copy all file/directory attributes onto different file/directory?

I want to copy the attributes (ownership, group, ACL, extended attributes, etc.) of one directory to another but not the directory contents itself. This does not work: cp -v --attributes-only A B ...
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2answers
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Check multiple files with string

i.e. for each .csv file, do the following: Check if the file contains the string “HEADER” in the first line. If its missing, do the following: Display, “ERROR: Missing HEADER record for ” Rename ...
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1answer
295 views

How do I mount a UFS disk in read-write mode?

I have a system drive that has filled up to the last sector, so that it doesn't boot anymore. The file system is UFS (it's an old Freenas 0.7 installation), but since UFS write support doesn't appear ...
4
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2answers
5k views

How to repair a corrupted HFS+ partition from a damaged hard-disk?

I have a friend's Mac OS X disk that comes with an HFS+ partition. I am supposed to recover the personal data from this disk, and I'm not yet sure if the filesystem is corrupted or the disk is dying). ...
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1answer
4k views

How do you use badblocks?

I need to do a destructive (rw) test on a new drive, and a read-only on a drive that fell out of my RAID array. I want to see if it finds problems and how far along it is.
28
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5answers
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How can I create a /dev/null-like “blackhole” directory?

I would like to create a "/dev/null" directory (or a "blackhole" directory) such that any files written to it are not really written, but just disappear. I have an application that writes out large ...
4
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3answers
150 views

Linux file system that ages off older files when partition is full

I am wondering if there is a file system equivalent to a round-robin database, which for a fixed size, ages off the oldest files. It is pretty easy to implement with a simple cron job, which I have, ...
4
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1answer
24 views

batch rename files

I have multiple photo files with inconsistent name format. beach north.JPG beach south sm.jpg Bryce windsurfing sm.jpg DSC01031 1024x.jpg DSC02652 ed sm.jpg DSC03229 sm.jpg Kayak kids 2.jpg Maui ...
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3answers
89 views

Transactional UNIX shell for file system changes

It is easy to make a mistake when copying (cp), moving/renaming (mv), removing (rm/rmdir), creating dirs (mkdir), and changing file permissions (chmod). It would be nice to have a log to view before ...
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4answers
764 views

Is Gobolinux active any more?

Today I hear about existence of a revolutionary distro named Gobolinux. I am very interested and excited about it (in particular its file structure). Unfortunately it is not updated for a while. ...
5
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1answer
90 views

What's the easiest way to resize an ext4 partition from the command line?

What's the easiest way to resize an ext4 partition (or any type partition depending on the method) from the command line (potentially with the fewest commands, but also the easiest to understand)? ...