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

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124 views

Why does the mountpoint of my root filesystem change?

When I look at the output of lsblk it will usually show: lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 298.1G 0 disk ├─sda1 8:1 0 1023M 0 part /boot └─sda2 8:2 0 ...
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1answer
60 views

how to access with Linux to the real block size info of a filesystem when it is mounted on nfs?

I have a Centos 6.5 and Solaris 5 machines. I'm trying to get the information about block size of a filesystem in the member f_frsize of statvfs. I tried first from Centos but when the filesystem is ...
0
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1answer
26 views

Multiple file systems on BeagleBone Black?

I'm trying to put together a BeagleBone Black using Debian on the EMMC, a separate MicroSD card and a flash USB disk (but could ostensibly be platter media on USB). My question, simply put: are there ...
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1answer
628 views

Determine if zfs is the actual filesystem [closed]

With Solaris 11 the default filesystem should be zfs, but following the official guide I obtained (with cat /etc/default/fs) LOCAL=ufs Is this an error? I thought that the same information was in ...
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1answer
133 views

why doesn't iozone generate output file?

I'm using iozone3 for tesing, on Xamin (an Debian-based OS). When I enter iozone command, for example iozone -Rab output.xls, the test runs successfully. But after running the test (after displaying ...
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1answer
611 views

harddisk not recognized / filesystem too large to mount safely on this system / hdparm shows garbage

I have a 4 TB Verbatim external hard disk with ext4. It can be successfully mounted at my Raspberry Pi. I am trying to plug it at my WD Mybook Live Duo device where I have SSH root access. When I ...
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2answers
131 views

How to copy to a formatted image without root privileges?

I have formatted an image file using the mkfs command, and I would now like to copy files to that image file without root privileges. I have already tried to mount the image to a local directory, ...
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1answer
31 views

Regarding identical copies of gedit files

When ever I save a gedit file in a directory, two copies of it get saved with identical content. Ex: If the gedit file is named as file_name and saved in Home directory then when u ls the Home ...
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81 views

Avoid infinite loops in file operations

In many programs, such as in this example filezilla, when I go to use certain directories they get stuck in an infinite loop. So I might be uploading a folder to an FTP server, but this folder links ...
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1answer
312 views

monitor file permission changes

How can I figure out which process is changing the permissions of a file? on a Debian server, I have the problem that something is changing the permissions on /dev/null every day at 6:20 (since 3 ...
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2answers
1k views

How to format a 1GB USB stick to FAT32 with 512 bytes sector?

I am trying hard to format a 1GB USB stick so that I can use it to install a new linux OS. Because the Disk utility has failed me when creating the file system. I tried to do it manually using fdisk ...
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25 views

Defining Languages Available at boot - LiveCD

I am trying to create a refined version of the buggy uck for customizing Ubuntu LiveCD ISO, here it is if you're interested in helping. NOTE: The process is straight-forward, except when customizing ...
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0answers
144 views

Why are block sizes limited by page size in Linux?

In many (all?) file systems that Linux uses, including ext2/3/4, the maximum block size is the page size of the architecture Linux is running on, ie. 4KiB on x86. Why is there this limit? Might this ...
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4answers
217 views

mount info for current directory

I can do df . to get some of the info on the mount that the current directory is in, and I can get all the info I want from mount, but get to much info. I can grep it down, but am wondering if there ...
2
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1answer
48 views

Installing a new OpenBSD kernel “safely”: why does `make install` go through these extra hoops?

After building a new OpenBSD kernel, the install target of the kernel Makefile does the following: rm -f /obsd ln /bsd /obsd cp bsd /nbsd mv /nbsd /bsd I understand that the first two lines remove ...
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2answers
58 views

Can the Operating System access a particular filesystem after it has been unmounted?

I have mounted a filesystem at a particular directory and I replace a file present in the filesystem.I now unmount the filesystem. Is there any possibility of Operating system accessing the replaced ...
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0answers
18 views

Proper file system for an External Hard Drive to work well on Linux [duplicate]

I have a External Hard Drive (EHD) I want to use to backup the data on my Linux laptop. I want to know how I should format my EHD for it to work correctly with Linux. Thanks.
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1answer
582 views

ext4 filesystems frequently corrupting

We have occasional power outages in our environment which seems to cause data corruption on our Ubuntu machines with ext4 filesystems. To my understanding ext4's default is to use data=ordered ...
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2answers
259 views

With “find /”, skip directories like “/proc”, “/sys” and similar [duplicate]

There are some directories that can cause problem with find, and especially find /. These are directories in which the OS creates files which are not really files. Among these directories are /proc ...
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0answers
112 views

How to use Reiser4 on Debian Wheezy?

Is there an easy way to use Reiser4 on Debian Wheezy? I installed reiser4progs but obviously I need a patched Kernel as well to use it. Is there some semi-officially maintained kernel to install ...
0
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1answer
174 views

NFS mounting wrong File System

I have followed this How To ( https://help.ubuntu.com/community/SettingUpNFSHowTo ). My machine has a file system 30GB and other File System of 1TB mounted on /backup As this How To says to create a ...
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2answers
98 views

Use/See whole the flash memory space

When we bought a N Giga Byte flash memory, the free space that the OS provide for us, is less than N GigaBytes. For example, for a 2 GB flash memory, total space that we can use, is 1.86 GB. As far ...
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1answer
36 views

Unix filesys reserved space [duplicate]

I've read that in Unix, you can configure the file-system to reserve certain amount of space for root. Which configuration property is it?
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46 views

How can I unveal files on my external hard drive?

I copied a big folder (around 110 GB) from my (Mac 10.7.5) computer onto a hard drive (exFAT). It took quite some time and afterwards I even checked that the files were actually there. After more ...
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1answer
24 views

Get allocation status of a file's range in an FS which supports delayed allocation

For a very large file with delayed-allocation, some sectors may have been allocated and some may not. Delayed allocation is supported by ext4/xfs/etc.. For example, create an empty file and set to ...
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2answers
21 views

Is the content of a file always stored continuously?

In ext filesystems, Is the content of a file always stored continuously? Or the file conent can be partitioned into different parts, with each part stored continuously, and all the parts stored not ...
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0answers
198 views

Cannot mount second 1TB harddrive in Linux, works fine in Windows 8.1

So I have this problem with my second hard-drive that I have been trying to fix for quite awhile now with no luck. I have searched around to try to find solutions to my problem but nothing seemed to ...
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1answer
130 views

Relation between the filename and inode of a file

For a file, it is said that its "filename" points to its inode. Does it mean that its "file name" is a data structure that has or is a pointer pointing to its inode? It is also said that its ...
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1answer
455 views

Debian file's permissions for secondary's group of user

I am installing a proftpd server on a debian dedicated server, In order to be able to update some website files in this folder : /var/www/website I have added a new user : my-ftp-user This user's ...
2
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1answer
186 views

What is advisory locking on files that Unix systems typically employs?

I read that Unix like system typically use advisory locking for file IO vs mandatory locking used by Microsoft OS's. If I understood correctly in mandatory locking file lock is enforced by the OS ...
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2answers
134 views

Create new temporary directory

What's an effective way of creating a new /tmp directory, that behaves just like /tmp (purged on reboot, etc.), but in a different location? In my case, I want to create a ~/dev/tmp directory where I ...
1
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1answer
19 views

big-scale tracker alternative for server filesystems

I'm using 8tb RAID storage (XFS filesystem) filled witch lots of files. By default Suse had installed tracker for file indexing/searching but: It's constantly reading HDDs (like for half a year now ...
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4answers
305 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 ...
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1answer
2k views

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

I am going to set up a new Linux system on the 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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1answer
4k 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 ...
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1answer
130 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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188 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
457 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 ...
3
votes
1answer
104 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
22k 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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0answers
131 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
99 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 ...
3
votes
3answers
273 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
208 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 ...
3
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2answers
629 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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1answer
53 views

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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2answers
782 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
577 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
914 views

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
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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, ...