A filesystem is a method of storing and organizing computer files and their data.
0
votes
1answer
25 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 will it go further, else it will give a "Bad CRC" error.
I want to do same thing ...
0
votes
1answer
20 views
Files replaced with Finder on Mac creating a copy on Samba's .recycle
Scenario:
Ad Agency with Samba Server and multiple Mac users, 0 Windows users.
vfs objects = recycle
recycle:keeptree = yes
recycle:repository = /storage/files/.recycle/%U
Workflow:
Before start ...
5
votes
3answers
2k views
Mount a filesystem read-only, and redirect writes to RAM?
Is it possible to mount a loopback file as read-only, and redirect all writes to RAM?
3
votes
1answer
41 views
Why aren't CD image files listed when mounted in current directory?
When mounting a disk image in the current directory using :
sudo mount -o loop -t iso9660 wall.iso ./
Listing files in current directory only returns wall.iso .
To view the actual files on the disk ...
0
votes
1answer
83 views
What is Linux for OpenVMS DIRECTORY/NOHEADING/NOTRAILING?
OpenVMS DCL command DIRECTORY/NOHEADING displays just the full file name including path info in a single-column format without any of the normal headings for a directory listing. The /NOTRAILING ...
3
votes
1answer
65 views
Where to put scripts only to be called by another script?
I've written a basic command line application composed of multiple bash scripts. One of these is intended to be run by any user of the computer, so I understand the correct location for this would be ...
0
votes
0answers
13 views
Query an overlayfs
I'm looking for a way to query a mounted overlay filesystem [overlayfs] in order to check it's upper and lower dir but till now I didn' find any suitable command.
Please , someone in the list know is ...
7
votes
3answers
245 views
What filesystem offers best protection for securing data against corruption due to power loss?
I am running a small uClibc and busybox based embedded system on an x86 device. I am using an initramfs but I also mounting a custom ext3 directory on a compact flash device in IDE mode that I am ...
13
votes
5answers
1k views
Do journaling filesystems guarantee against corruption after a power failure?
I am asking this question on behalf of another user who raised the issue in the Ubuntu chat room.
Do journaling filesystems guarantee that no corruption will occur if a power failure occurs?
If this ...
3
votes
1answer
26 views
Ubuntu filesystem buffers/cache always empty
I have a virtual server with ubuntu 10.04.4 LTS and plesk (preinstalled by hosting company).
Now i have seen that the buffers/cache are always empty.
Current uptime is 22 days. free and htop shows the ...
17
votes
4answers
700 views
What doesn't need defragmentation? Linux or the ext2 ext3 FS?
Why don't you have to defrag a Linux system? Because it's using the ext2/ext3 file system or because it's Linux?
That's relevant, because a have a double boot system (W7 / Ubuntu) and a common ...
1
vote
1answer
67 views
zfs one pool error
I have zpool with name zroot
and zroot has 4 pool
when electricity down system reboots and than i saw some error with 1 pool:
Solaris: Warning: can`t open object for zroot/var/crash
log_sysevent: ...
4
votes
3answers
36 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 ...
5
votes
1answer
40 views
Finding all the hard-links of a file without traversing the file system
I have seen in this page that inodes have a link counter to know how many files (read: "directory entry") point to this inode. Is there a way to know which directories contain such entries without ...
2
votes
3answers
52 views
How to check if the ISO was written to my USB stick without errors?
I followed these DebianEeePC HowTo InstallUsingStandardInstaller instructions at the Debian Wiki, to write a Debian ISO to my USB.
dd if=debian-*-netinst.iso of=/dev/sdX
Using sha1sum, I can check ...
3
votes
3answers
91 views
What filesystem should be used when transfering files between Linux systems?
I often need to move files between two Linux computers via USB. I use gparted to format the USBs. When I formatted the USB to use FAT32, the USB was unable to copy symlinks, so I had to recreate the ...
2
votes
2answers
27 views
How should I format a USB prior to writing an ISO to it?
I found these Debian EeePC HowToInstallUsingStandardInstaller instructions at the Debian Wiki, stating that I can install an ISO to a USB using this:
dd if=debian-*-netinst.iso of=/dev/sdX
Do I ...
1
vote
1answer
71 views
What exactly would happen if this command were run?
A simple curiosity... assuming running as root what would the following command do?
# mv / /dev/null
Would it be a faster death than rm -rf from the root of the tree?
11
votes
5answers
6k views
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 ...
2
votes
2answers
41 views
Can I use partitions made by Windows 7 in Linux?
I am planning to leave Windows and get to Linux (yet do not know which one, but it is not the question).
I was using Windows 7, I have 2 partitions (C:198 GB, D:488 GB). And I have a lot of documents ...
2
votes
1answer
3k views
Changing user and group ID system wide (including file system attributes)?
(this question possibly related to Linux: simulating/masking user ownership upon mount of 'external' partitions? - Stack Overflow)
I typically use Ubuntu (currently 11.04) as my desktop OS; let's say ...
5
votes
2answers
218 views
Testing ext3 filesystem on embedded device [closed]
My set up:
An embedded device with flash memory on it.
Flash is partitioned into ext3 filesystem partitions.
Have busybox on it.
My Goal:
To uncover errors /bugs/ problems on ext3 filesystems.
...
2
votes
0answers
226 views
Can /mnt/hgfs/'shared folder' be used as apache root?
I have an Ubuntu Server (12.04) running on my development machine. It is in a VM. I have succeeded with the task of setting up Apache2, MySQL, and PHP. I can access the server from my host browser ...
1
vote
0answers
52 views
EXT3 file operations [migrated]
I am trying to follow how Linux deals with EXT3 files.
I am looking at fs/ext3/file.c where there are file operations that deal with the files are present:
const struct file_operations ...
0
votes
1answer
104 views
System crashes during boot while mounting /lib/init/rw
After a nasty crash, my system keeps crashing during boot. After a little bit of investigation I have discovered that it crashes executing the following function (in /lib/inin/mount_functions):
...
0
votes
1answer
42 views
Finding which filesystem [duplicate]
I have an external hard drive and would like to know what kind of a file system it has.
How do I find that out using the terminal?
1
vote
2answers
109 views
How many files is equal to 1 inode
I am quite confused about the i-nodes. They say delete files to reduce the i-nodes but I have deleted 100s of log files from different cpanels on my server but inode count is still the same.
5
votes
1answer
377 views
Immutable bit on AIX?
Under Linux I can:
chattr +i SOMEFILE
so that even root can't modify the SOMEFILE. Are there any similar solutions for AIX?
0
votes
2answers
73 views
Unknown btrfs error, partition won't mount
unix friends,
a day or so ago my btrfs partition just stopped working, which means i can't mount it anymore which is why my Fedora Linux doesn't boot anymore. I don't really have much information, ...
1
vote
0answers
28 views
Can I use a disk without partitioning it? [duplicate]
If I have a disk (whether a physical disk or a virtual disk managed by a some VM hypervisor) that I want to use as a single big partition, do I need to actually create a partition table with one big ...
0
votes
2answers
34 views
Comparison of forbidden symbols and names in different FS's
What symbols and (maybe) names are forbidden on different files systems available in modern Linux distribution?
4
votes
0answers
205 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, ...
4
votes
2answers
66 views
How to upgrade shared library without crash?
Here it says that you can rewrite an executable file and the process will run just fine - it will be re-read when a process restarts.
However, when I try to replace a binary file while the process is ...
2
votes
1answer
54 views
Finding all partitions with filesystems
I'm writing a script that will copy all of the files on a device to a directory. The problem is that some of the devices have multiple partitions and some of the partitions don't have filesystems to ...
27
votes
5answers
15k views
What is a Superblock, Inode, Dentry and a File?
From the article Anatomy of Linux File Systems by Tim Jones, I read that Linux views all the file systems from the perspective of a common set of objects and these objects are superblock, inode, ...
2
votes
2answers
71 views
How does Linux know the Location of File Data on Disk
related to: What is a Superblock, Inode, Dentry and a File?
None of the famous metadata structures hold onto to location data for the actual file. Dentry maps names to inodes, and inodes store ...
2
votes
1answer
29 views
Does Rsnapshot work on Fat32 filesystem?
Does Rsnapshot work on the Fat32 filesystem?
I get the impression from Rsnapshots homepage that it does, but then I read here that it doesn't.
So I'm not sure what to think.
2
votes
1answer
318 views
Are there any differences between mounting a /proc filesystem inside a chroot compared to mounting it from the outside?
Compare the following:
mount -t proc none ./my_chroot/proc
and:
chroot ./mychroot mount -t proc none /proc
6
votes
1answer
241 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 ...
8
votes
4answers
128 views
What is Linux for SET FILE/ERASE_ON_DELETE?
In VMS one may tell the file system to write junk over the existing contents of a file when it is deleted. Here is the DCL command to identify the file for this kind of treatment:
$ SET ...
4
votes
4answers
73 views
Tool to compare files on one disk with registry information on another?
Been a long time since I got very far under the hood in Unix so I'm probably not even using proper terminology when I say 'registry,' but here's the situation.
I have a disk thats dying. Lots of i/o ...
2
votes
1answer
161 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 ...
1
vote
2answers
218 views
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 ...
4
votes
0answers
68 views
why . and .. are listed when ls -a command executed? [duplicate]
When I execute the ls -a command, all files and folders in that directory listed, as well as . and .. are listed too.
Why is that? Are they a file or folder?
3
votes
2answers
66 views
How can I backup a directory to NTFS while preserving Unix file attributes?
I want to make a backup of my home directory to an NTFS partition (an unfortunate limitation). However, when I last tried using just cp, the attributes (owner, etc) went away. How can I make a backup ...
8
votes
4answers
495 views
filesystem for archiving
I have some complex read-only data in my file system. It contains thousands of snapshots of certain revisions of a svn repository, and the output of regression tests. Identical files between snapshots ...
1
vote
1answer
117 views
What parts of the filesystem to tmpfs/squashfs/sparseimage for USB live system
I want to create a live system on a USB key / SDCard with Linux Mint 14 (KDE or Debian Edition) that stores data persistently. The USB key needs to have at least one fat32 partition. As storage for ...
19
votes
5answers
5k views
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 ...
2
votes
1answer
59 views
What are /dev, /run and /run/shm and can I resize them?
So, I recently created a 15GB partition for Linux Mint 14. I've been working on it for a while, and I got a Low Disk Space notification. I ran df -h and this is what I'm getting:
Filesystem Size ...
5
votes
4answers
142 views
Check if folder is a mounted remote filesystem
What is the best way (reliable, portable, etc.) to check if a given folder is on a mounted remote (nfs) filesystem within a shell script?
I am looking for a command that would look like:
...
