A filesystem is a way to organize and store computer files with their data.

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What is the space overhead of different filesystems?

I backed up/restored a filesystem from a Ubuntu system to a Fedora 17 one. I noticed that according to df output the used space increased by 30 %. What could be the reasons for this? At the Fedora ...
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1answer
2k views

Is Native Language Support (NLS) kernel support still necessary?

Does ext4 / cifs system need kernel NLS support ? I'm not sure if it's being handled by user-space program (decoding / encoding) ?
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1answer
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disabling journal vs data=writeback in ext4 file system

What is the difference between disabling journal on ext4 file system using: tune2fs -O ^has_journal /dev/sda1 and using data=writeback when mounting? I thought ext4 - journal = ext2. means when we ...
4
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1answer
5k views

Mounting a multi-partition (GPT/HFS+) USB 2.0 harddrive on Debian

I have a 3TB USB 2.0 hard-drive which has two HFS+ (Mac) partitions using GUID partition table for the partition records. It was partitioned with Mac OS Disk Utility. How can I mount these partitions ...
4
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1answer
3k views

Recover a reiserfs hard disk

I'm unable to mount my 300GB external (in external enclosure) HDD's single partition. None of the fsck tools add anything, they cannot even recognize the partition. I had forgotten whether I had used ...
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0answers
113 views

Real copy to Android device

When i copy files to the Android phone, they are copied to some cache, but they aren't written. I don't like it, because i don't know what is done. I've tried these methods: copying via thunar file ...
4
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3answers
743 views

Monitor directory and if a file is requested then rsync on demand

Is there a tool that monitors a certain directory and if a program tries to access a file in that directory, the program loads that file from another place transparent for any application that tries ...
9
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4answers
19k views

Is it possible to compress a very large file (~30 GB) using gzip?

Is it possible to compress a very large file (~30 GB) using gzip? If so, what commands, switches, and options should I use? Or is there another program (preferably one commonly available on Ubuntu ...
1
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1answer
355 views

Network Copy File With Low Overhead

We're trying to find a system to keep a pair of servers in sync, and I've looked at a million solutions. I came across incron, which seems like it would be perfect. Now, I just need a low overhead way ...
5
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1answer
154 views

Can non-canonicalized forms of filesystem paths be significant? (eg. “foo//bar”, “foo/./bar”, and “foo/../bar”)

I have a script for building a particular flavor of GCC cross-compiler. Throughout the script there are many paths that are not in canonical form, such as duplicate path separators (/xxx/foo//bar/yyy) ...
1
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1answer
342 views

Reclaiming space from one filesystem to give it to another without LVM

I want to add one file system space to another file system. /dev/cciss/c0d0p2 152358920 143606116 888588 100% /db2 /dev/cciss/c0d0p15 203899764 50767420 142607764 27% /db2/ade/sapdata1 ...
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3answers
522 views

How can the mac time code “b” be “n/a”?

There are 4 mac time codes for linux ext2: M -- modified A -- accessed C -- created B -- n/a How can one be "n/a"? What does it mean?
3
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1answer
515 views

How do I transfer files to a SunOS server via sftp with FileZilla?

According to the admin of the webserver, I should be able to use Filezilla to transfer files to the server but I am getting an error. I set up Filezilla for transferring files sftp - using these ...
2
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1answer
3k views

Mounting HTFS Disk on Linux

I got my hand on a harddrive that contains a SCO Openserver 5 and I need to access the data inside. Is there any way I can just mount and start copy-pasting the files? I've googled around and mostly ...
4
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3answers
2k views

Boot Linux system from a subdirectory on a partition?

I would like to try to set up a computer so that it has multiple Linux installs all in the same filesystem. For example, the filesytem would have 3 folders: /Ubuntu_Precise, /Ubuntu_Oneiric, and ...
2
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1answer
1k views

Error mounting dir from ext4 file system

I am trying to mount a directory on a ext4 type file system onto another linux box. Both boxes are on the same network [root@localhost]# mount -o rw x.y.z.w:/home/lab /devbox mount: wrong fs type, ...
9
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3answers
412 views

Stacked filesystems with write-back

I need to setup a system where a laptop and a desktop computers coexist. The idea is, I bring the laptop into the network and the laptop syncs the /home directory( with some exceptions) with the ...
3
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1answer
2k views

inode limitation on a 500GB hard disk? Can you explain please?

I am launching a social networking website on LAMP Stack on Linux Ubuntu, I know that people are going to upload lots of pictures. Let's say I have 5000 users and each user upload a minimum of 100 ...
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4answers
4k views

Unable to delete directory

On my OS X host, I am having trouble deleting the directory "foo". mymac:.Trashes joe$ ls foo mymac:.Trashes joe$ ls foo/ Ảnh011.jpg Ảnh012.jpg Ảnh013.jpg mymac:.Trashes joe$ ls -l foo/ ls: ...
17
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1answer
902 views

How to compact a directory

Every so often, some application runs wild and fills a directory with a huge amount of files. Once we fix the bug and clean up the files, the directory stays big (>50MB) even though there's only 20-30 ...
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0answers
95 views

How to access storage device related events with Zeitgeist?

I am trying to get my mind around Zeitgeist, using the Python DBus API. To get the latest accessed files and application is not so hard, here is what I do: #! /usr/bin/env python from ...
15
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4answers
3k views

Best method to collect a random sample from a collection of files

Suppose there is a directory holding 300 data files. I want to randomly select 200 of those files and move them into another directory. Is there a way to do that under Unix/Linux?
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1answer
2k views

Different UID/GID when using an ext4 formatted USB drive with another computer

The problem of using a filesystem like ext4 on a USB stick or memory card is that when it's mounted into another system the disk's UID/GID might not be present. Can this be fixed with a mount option? ...
3
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2answers
4k views

mounting to non-empty directory, then later deleting original files

I have some unused space on my disk, and decided to use a little of it to create a separate /var partition. There might be an easier way to do this, but my idea is to copy the existing /var ...
2
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0answers
287 views

Connected external HDD slows down system

I need to connect large external hard disks (with many many files) to a system running Ubuntu. I have no idea how the Linux kernel is treating the inodes for the external drives, but attaching huge ...
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9answers
49k views

Mount Google Drive in Linux?

Now that Google Drive is available, how do we mount it to a Linux filesystem? Similar solutions exist for Amazon S3 and Rackspace Cloud Files.
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2answers
962 views

Symlinks and EncFS

I am trying to secure my Dropbox account by using EncFS. My strategy is as follows: I store all my files in a folder called ~/Public/. The encrypted counterpart of ~/Public/ is ~/Private/. Use ...
7
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2answers
678 views

Best file system for removable media

Recently I had a SD card destroyed ( software wise ) on me. Basically as well as I can figure it out, all the metadata was wiped (ext4 card). This happened when I was working and suddenly had to write ...
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2answers
6k views

Mount Windows phone as a removable device

I know that the Zune software doesn't work with Linux of any kind, but I found a guide here that shows how to change regedit in Windows to use the phone as a removable device with direct access to the ...
16
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2answers
21k views

“mount -t TYPE /” - how to know that what could the “TYPE” be?

OS: ex.: Ubuntu 10.04 - how to know that what does the "mount -t TYPE" knows? I mean is there a command to list the supported filesystem types using with mount?? UPDATE: is the following cmd always ...
5
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1answer
5k views

How to resize ext3 image files

I have created an 200MB ext3 using the following commands. dd if=/dev/zero of=./system.img bs=1000000 count=200 mkfs.ext2 ./system.img tune2fs -j ./system.img How can I resize it to 50MB and 300MB? ...
0
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1answer
816 views

Filesystem for Gentoo root?

I need a fast and space eficient filesystem for my Gentoo workstation. I have some expirience with ext4 and found it very slow on lots of small files inside the filesystem. I am considering another ...
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4answers
1k views

UDF and fstab (no UUID)

In my search for the ideal filesystem to share files between a lot of computer with a lot of different OS'es I accepted this answer and installed a UDF filesystem on my USB stick. First I blanked the ...
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4answers
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XFS vs Ext4 vs Others - which file system is stable, reliable, for long run such as 24/7 case [closed]

XFS and Ext4 file system which one is really stable and reliable for long run with heavy disk write and read? the system will be used in a place where 24/7 is in service, and every second there is ...
0
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2answers
1k views

creating custom mount point in / for a file system

If I want to mount a file system at /myname is it possible by just editing fstab file? Or should I do more to be safer? Is any other way to do it, or its not a good idea to do?
0
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1answer
390 views

Moving Data From Old System to New System via NFS Mount

My old system was running RHEL 5,(systemold.blah.blah), and I wanted to update the server with as little downtime as possible, so I built out a new system (systemnew.blah.blah) and put RHEL 6 on it. ...
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2answers
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File size :size of content and what is seen different

Assume you have a file 342MB but when you get into that file and look the content of it; you see that everything occupy around 92 MB. No hidden file or any other thing exist on it. How can that be ...
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2answers
4k views

How can I copy a folder structure from one server to another keeping the same owner and permissions?

How can I copy a folder structure from one server to another keeping the same owner and file permissions?
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3answers
987 views

Most unix-like filesystem that can be mounted under windows and Mac OS X

I've recently purchased a usb stick which I will be using to share data between me and my colleagues. I'd like to format it as ext3, but I know this will cause trouble because for instance Mac OS X ...
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1answer
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what is inode for, in FreeBSD or Solaris

I know a little about linux kernel. BUt for Freebsd, the "vnode" actually is similar to the "inode" in Linux kernel. And there is a "inode" concept in FreeBSD or Solaris. So my question is: what is ...
3
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1answer
2k views

How can I check mnt location?

On RedHat I'm able to do this: $ df Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda1 8256952 1820752 6352340 23% / tmpfs 305624 ...
2
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1answer
10k views

How to restore a Fat32 filesystem under Linux

Here is what happened: I used the Laptop and accessed some data on my usb stick. Then I closed the Laptop putting the system into sleep mode. The USB-Stick was still plugged in. After the laptop was ...
3
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1answer
802 views

HP-UX 9: Backup filesystem using tar

So I've got an HP-UX 9 box that I'm trying to backup, first to a tape with fbackup, to no avail, and now to a folder shared over NFS. I'm using the command "tar -cvf /nfs/Results/backup.tar /" where ...
0
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1answer
117 views

Is there an application to find similar documents?

Is there any good software that finds groups of multiple files that are similar, or where one file includes a part of another? I have a directory with lots of files mixed up. Among the files, are ...
3
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4answers
4k views

What is the concept of Drives in Unix Systems?

In windows, we have C drives where all the softwares are installed and other partitions e.g; D, E etc to store our data. Now once we reinstall the windows for some reason, we install everything again ...
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2answers
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Is it possible to enable execution of files from a cifs mount in bash?

I have a remote mount with cifs and it would seem there is no way to have bash execute scripts from that mount, is it possible to enable such execution? ls -lh ini* -rwxrwxr-x 1 alan 500 222 ...
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3answers
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CIFS vs SAMBA, What are the differences

What are the differences between CIFS and SAMBA? When would you use one over the other? Are there any performance differences between the two?
8
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1answer
652 views

Deduplication on partition level

What are available solutions for block level or more detailed deduplication ? There are file-based ones - with "Copy-On-Write" approach. I'm looking for block level "copy-on-write", so I could ...
25
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9answers
2k views

How to tell what type of filesystem you're on?

Is there a command to tell what type of filesystem you're using?
3
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2answers
1k views

I/O statistics per user

I have access to an academic supercomputer where there is an NFS filesystem where our lab keeps our data. When I run iostats -nh I believe I am getting statistics for all users accessing all storage ...