A file system (or filesystem) is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available space on the device(s) which contain it.

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Keeping folder of files in sync over 3 machines

Morning, Got 3 machines that have user content on them, which I need to keep in sync. This is a 3 way sync. Currently I run rsync but we just don't handle deletes. Have looked at something like ...
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3answers
1k views

Optimal file system type and mount options for an rsnapshot dedicated drive

We have an external USB 2 drive that we are using as a backup drive for our configuration. We use rsnapshot for the backups. It uses a few standard commands for managing snapshots: rm -rf: deletes ...
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1answer
51 views

Not able to delete file from the server?

I've a file called piture-list.php in my website. When I see them through the ftp client it shows two files with different filesizes. as File name filesize picture-list.php 19818 ...
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2answers
432 views

Why does Windows XP (during a rename operation) report file already exists when it doesn't?

From the command-line: E:\menu\html\tom\val\.svn\tmp\text-base>ver Microsoft Windows [Version 5.2.3790] E:\menu\html\tom\val\.svn\tmp\text-base>dir Volume in drive E is DATA Volume Serial ...
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714 views

directory with 980MB meta data, millions of files, how to delete it? (ext3) [duplicate]

Possible Duplicate: rm on a directory with millions of files Hello, So I'm stuck with this directory: drwxrwxrwx 2 dan users 980M 2010-12-22 18:38 sessions2 The directories contents is ...
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1answer
1k views

Frequent dirty file systems

Good morning, I'm seeing an issue on a few servers that they are going 'dirty' a lot, around once a month. For example: This was on 11/8: # tune2fs -l /dev/sda7 | grep state Filesystem state: ...
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2answers
12k views

How long should resize2fs take on a 1TB partition?

I've got a new computer at the university and almost set up everything for myself on it when I've noticed that the previous user of the machine used a huge 1TB ext3 partition only. I usually keep ...
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2answers
308 views

way to roll back a large file renaming/move action

Seems like maybe a programming question, but my experience has been that admins are the right crowd for this? A. I have about 10,000 files that are just enumerated and all in one directory - ...
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78 views

Linux web server shared hosting file errors

I'm using a shared hosting to host my website and have some problems with files from time to time. First, one of my file (php) was missing a part of code (nothing to do with hackers just a random ...
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126 views

Cost of storing many files on a fileserver

I need to store a lot of data contained in SQLite databases on a file server. I have the opportunity to split the data up into many files. This means that there is less risk of a large part of the ...
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1answer
499 views

MDADM Array Being Limited to 2.0TB

I have an MDADM array with four 1TB disks in a RAID5 configuration. Here's the relevant part of mdadm --detail /dev/md1: Version : 00.90 Raid Level : raid5 Array Size : 2929537920 ...
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2answers
596 views

Simulating slow filesystem

I'd like to run some test on my system and for this I'd like to simulate a slow files system. Are there easy options out there? (an idea that I have currently would mount something over TCP, even if ...
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6k views

ZFS alternative for Linux?

I'm running OpenSolaris with ZFS for my main fileserver. I originally went with ZFS because I heard so many awesome things about it: Automatic disk spanning (zpools) Software RAID (RAID-Z) Automatic ...
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1answer
471 views

What are the maximum number of files/directories allowed per directory in common Linux FS?

It is known that ext2/ext3 FS have a rather low limit of about 32k files/directories per directory. It looks like ReiserFS is limited in practice by the r5 hash function which allows about 1 200 000 ...
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2answers
577 views

Shared storage for web cluster

Have a big question about shared/clustered/distributed file system for storage. It will shared storage for shared web hosting (web files + maildir) and OpenVZ containers storage . Have any one working ...
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1answer
191 views

Recover overwritten filesystem

I made an oopsie- insofar as a filesystem with important data was overwritten as an LVM volume. I never actually wrote any data to the disk though, only hosed enough of the partition table to mark it ...
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2answers
799 views

NTFS allow Read/Write/Modify, but not Copy

Is it possible to allow users to modify and read files/folders but not copy them to other locations? Problem is I have a folder that users need to read and modify files in, but I don't want them ...
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2answers
1k views

How can I benchmark Linux file systems on a SAN?

I would like to do a benchmark of our file systems, stored on the SAN. But the SAN is backed by a lot of cache (only 10 to 20 percent) is used, so if I do some testing, result won't be realistic. ...
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72 views

Managing a large amount of folders & files (Digital asset)

I have a large heap of files containing photographs, some documents of info about the same photo , a few .psd files, a few .tiff files, all related to the same photograph or information. I want some ...
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3k views

It is XFS reliable? In case of a power gone off is xfs riskier that ext3 in data corruption/safey?

I have been having some electrical issues,mostly power going out suddenly for a few months,and although ups solve the thing mostly. But still i am worried about filesystem corruption,and data lost. ...
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3answers
2k views

Is it possible to make a USB port provide access to a file system?

This is a weird one. Allow me to clarify, I have a Debian Linux file server - and I need to access some files from it. Usually, I would just use a network for this (wifi, ethernet, etc) but ...
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3k views

How to list content from a tar file without recursion?

I've a tar (gz, bzip) file and want to see its content, but not recursively. This is: The "first level" in the file. I already know how to see content: tar -ztf file.tar.gz But it's recursive!! ...
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2answers
5k views

Filesystem is read-write but acts like read-only… remounting fixed it?

CentOS 5.5 I just came across an instance where my /storage directory was supposedly a read-only file system. I get the error: mkdir: cannot create directory `test': Read-only file system df: ...
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222 views

Accessing ALL Subversion revisions within a file system

Is anyone aware of a way to access all revisions of a subversion repository within a file system? I would really benefit from being able to reference a file locally as, for example, ...
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1answer
865 views

Utility to check Windows NTFS ACL/ACE dependency integrity

I'm having issues with imaging a NTFS filesystem where the ACL/ACE of a file has invalid ACL/ACE dependencies. chkdsk does not detect or fix the problem. Is there a tool available to detect (fixing is ...
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1answer
132 views

Why make random file for loopback device for encrypted file system?

I have read a few tutorials on setting up an encrypted file system using cryptsetup. They all start with the following creation of a random file dd if=/dev/urandom of=/etc/cryptfile bs=1M count=10 ...
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1k views

How to have ZFS make snapshots of a directory only when files are changed?

Is it possible to have ZFS make snapshots of a filesystem i.e. pool/filesystem/ only when files are changed? Instead of using cron or something to automatically create a snapshot every 5 minutes is it ...
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7k views

How to check the creator of a file in Windows?

I want to find out who created a certain file but all I can see under Security tab is Administrators group being pointed out as owner. This is not very helpful. How can I see who really created the ...
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11k views

.nfsXXXX files appearing, what are those?

We have an application running (on RHEL5), streaming data onto an NFS share. Recently we saw a lot of .nfsXXXX... (xxx being a hexadecimal number) appearing in its working directory, where the ...
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1answer
497 views

Upgrading 32-bit XFS filesystem to 64-bit

What would be the procedure for upgrading XFS filesystems from 32-bit to 64-bit? What damage or issues would arise from accessing XFS fs that was formatted on a 32-bit OS with a 64-bit OS? To ...
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524 views

Unix filesystem hook

I'd like to add a hook to the file system, so I can execute a process whenever a specific file is read from disk. Does *nix provide a way to create such a hook? (I have root access)
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Turning off atime on a filesystem

I am setting up a mongoDB replica set and one of the first things I am suppose to do is turn off atime on the file system. After researching this a bit, I am not opposed to doing this, but I have to ...
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How to format a partition under FreeBSD

I want to format a partition under FreeBSD and change it to UFS filesystem. I searched the web but even the "fdisk" man page is not clear at all. Any help would be clearly appreciated ! My current ...
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347 views

Any way to determine how files were deleted on Linux/Apache server?

PROBLEM: I have several missing directories on an offsite Linux/Apache server. I've tracked down about when they went missing from the httpd error logs, and I have a list of SSL logins to the machine ...
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1answer
564 views

Detecting system (filesystem / registry) changes in VMWare?

I'm currently running a 64-bit version of Windows, but I have some old games with 16-bit installers that no longer run. I've set up a VM running 32-bit Windows XP on VMWare Workstation, and the games ...
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2answers
669 views

multi-master file replication

I have a load balancer and several servers behind it. I'm looking for a multi master file replication tool that would allow me to write on any of the machines and replicate the content on all the ...
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1answer
312 views

distributed resilient storage system using existing linux spare disk space

tall order this request but I am hopeful... I have a bunch of servers (exactly 20) that each have about 2-7TB of free space, and that space is not in any danger of being used up soon. I was wondering ...
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4answers
219 views

Access filesystem underneath another mounted filesystem

The case I have is a directory that stores phone call recordings throughout the day. The root filesystem is running out of space so we added an external hard drive. This server may not be taken out ...
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If two directory copy processes are run simultaneously, will the respective directories be stored in contiguous blocks or interleaved?

Assuming that there is ample free space on the device, and it isn't fragmented. I'm interested in answers for various operating and file systems.
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623 views

OpenVZ file system

OpenVZ file system (simfs) has a limit of files per folder. We reached that limit and we are in trouble... Which is the best approach to this problem? Thank's in advance!
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3answers
326 views

web files permission setup

I could not find out what is the best way to setup your web files under UNIX OS. I have Apache running on Centos OS, I put my root directory under /var/www/html Here is the example: /var/www/html ...
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2answers
30 views

How to set up Windows to use a network Desktop directory upon logging into a network

I want to set up a file server for a Windows network so that the each Windows 7 client will automatically set its Desktop, Documents, directories to each user's home directory on the network (much ...
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1answer
193 views

Apache Permission issue

How do I resolve an issue of permissions in apache. The initial task that I am trying to get working is to upload a mura plugin the the temp directory of ColdFusion9. However, I have since discovered ...
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2answers
307 views

file system sync

I'm currently using rsync to keep a copy of a filesystem. This rsync constantly runs and keeps the backup up to date (in theory, its not particularly reliable). Is there a better way to keep a remote ...
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2answers
2k views

How can root user create file/directory unwritable for itself?

Normal users can chmod files to make them unaccessible like evgeniy@ubuntu:~$ touch test evgeniy@ubuntu:~$ chmod 444 test evgeniy@ubuntu:~$ echo 'test' > test bash: test: Permission denied Can ...
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522 views

Suggestions for recommended file system for Linux server

There are many file systems for a Linux server administrator to choose from. Also, it is not always an easy task to figure out the appropriate layout and optimal file system for your needs. Can you ...
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2k views

Free space on ZFS file system unexpectedly missing

Going to completely rephrase this question since it's still an outstanding production issue several months later. I have a FreeNAS 0.7.2 box, based on FreeBSD 7.3-RELEASE-p1, running ZFS with 4x1TB ...
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1answer
167 views

Good tool to delete folders which are read only/need “Administrator”

I did a system state backup of my server onto my second physical hard drive. This is fine, but I cannot delete the folder because some sub folders require admin permission (I am admin with full ...
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1answer
231 views

Generating error correction data for existing files (backups)

My server has a big dataset stored on disk. I am worried by the possibility of the data being silently corrupted over the years without anybody noticing. My idea was to generate "recovery data" for ...
2
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1answer
649 views

Recommended technology for layered disk cache in linux

I originally asked this on superuser but it occurs to me it's more more of a server topic. I've just bought a 6-core Phenom with 16G of RAM. I use it primarily for compiling and video encoding (and ...