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.

learn more… | top users | synonyms (1)

0
votes
0answers
12 views

zfs checksum verfication failed, solaris booting failed

Looks like my solaris 10 got hosed overnight for unknown reason. I get below error while booting and also when trying to cat menu.lst file in grub. Hard disk is being detected by ubuntu so it may not ...
-1
votes
0answers
27 views

deciding the filesystem to store mysql database [duplicate]

I have an EBS attached to my EC2 ubuntu instance. It's running smoothly and i am using it to store the static files for my websites like images, zip etc. Now i just realized i need to also get my ...
0
votes
1answer
6 views

File attributes on a NAS Drive not reporting user information

We have a Synology NAS drive attached to a server 2012 network, but the file attributes do not report who last modified any of the files? Does the NAS need to be reconfigured or is it a configuration ...
0
votes
1answer
28 views

Deleted File, Available Space Did Not Return [duplicate]

On CentOS linux, I just deleted a large log file over 3gb on XFS file system. After deleting the file, the available file space did not return to the drive seen via df -h. Is there anything I can do ...
1
vote
1answer
40 views

Remount root RW without reboot

Today I did something stupid on production xen vm server. I mounted the external device mapper as read only to make a copy of the filesystem. This process went well but then the rootfs / become ...
4
votes
1answer
255 views

Should I exclude all 'dev/' or only 'dev/pts/' during full server tar backup?

I'm curious why in all backup tutorials I found tar command excludes among others /dev/pts and not all of /dev/ Why would I want to backup anything under dev?
2
votes
1answer
86 views

How to get best performance: storage cache server (small files) with for 4 disks (3TB's)?

We're preparing a cache storage server for some small files that will be cached for a few days (so HDD will have more reading then writing). All files are rather small around 100 to 500KB a file, but ...
-2
votes
1answer
22 views

Separate io input/output in linux [closed]

My question is really short. Sometimes we have to separate i/o from a machine for example case of remote file system ? Why we do that ?
0
votes
1answer
19 views

Does fsfreeze flush FS caches?

If I run fsfreeze on a mounted filesystem, it will not be possible to perform new "write" operations on that FS until it is unfrozen, and "ongoing" writes should "complete". Now, will fsfreeze also ...
1
vote
1answer
26 views

How to sync SVN repository with a remote FTP filesystem

I configured a Centos server locally(in-office) which contains a SVN repository with a project. Many developers are working on this repository and making changes. Also I have a remote server which ...
-1
votes
2answers
46 views

Server Disk Space Calculation - Errors No such file or directory [closed]

When i do a du -h --max-depth=1 in my server i get following errors coming up, du: cannot access `./proc/13379/task/13379/fd/4': No such file or directory du: cannot access ...
0
votes
1answer
30 views

Copying files with tilde has odd behaviour

It's pretty simple to replicate. Create a folder with file "ABC123~1.txt" Create a folder with file "ABC 123.txt" Try to copy the file from the first folder to the second... windows asks if you ...
-2
votes
2answers
25 views

Deleting file in tar mounted with archivemount?

archivemount allows rw-mounting tar archives. What happens when I delete a file? Is it actually removed from the tar archive? Is a delete flag set? If the file is actually removed, then I assume the ...
1
vote
2answers
69 views

ext3/ext4 physical block size view

I'm using a suse 11 server with xfs and using "xfs_info /srv" command i seen this. xfs_info /srv/ meta-data=/dev/mapper/vg01-srvvol isize=256 agcount=38, agsize=1964032 blks = ...
0
votes
3answers
48 views

lamp — edit PHP file but doesn't change web output — including die()

Server is standard Linux server on Amazon Web Services. Cent OS 5/Apache/PHP 5.3. No APC. It's worked fine for over a year, but now when I edit some but not all PHP files on the server using vi, the ...
0
votes
1answer
44 views

Moving cpanel location from /usr/local to /home

My /usr partition is almost full, and it seems that the most practical option is to move the largest directory /usr/local/cpanel which is almost 4GB, to /home. Something like: Create link to new ...
4
votes
2answers
81 views

Copy directory tree without empty directories?

I have the following tree # upper letters = directory # lower letters = files A |-- B |-- C |-- D |-- e <= file |-- F |-- G I need to copy this tree to another destination, ...
0
votes
0answers
45 views

How to access files on Linux server from windows faster than with Samba network drive?

I can remotely access my files at work via Samba. Unfortunately, on my laptop with Windows 7 I have serious lags when accessing this directory and working on its files. I just use a network drive ...
2
votes
1answer
33 views

What is the mrxdav.sys file and what file system is it used for?

I'm looking to know more about the mrxdav.sys file on Windows machines, and what is the difference between it and ntfs.sys, cdfs.sys or fat.sys?
-2
votes
1answer
71 views

Shared storage solution for Debian Wheezy [closed]

I need to setup a new infrastructure which provides high available shared storage between debian servers. Our current solution is a "clustered DRBD NFS solution". We have setup 2 virtual file ...
3
votes
1answer
30 views

what exactly does fsck do under the covers (for UFS)?

If a computer crashes then the filesystem is an inconsistent state. What exactly is fsck(8) doing to restore to a usable filesystem? Is there a backup table? Is it cross-checking metadata? ...
1
vote
1answer
43 views

How do I replace the root filesystem (ext4) with a new one in LVM with one which has more inodes?

I have a few systems which have been running over a decade in a cluster on SLES 10 (now long past EOL). We're migrating to CentOS 6 64-bit. I got everything done but the final data syncs, and lo and ...
0
votes
0answers
37 views

Service running over network : Windows cannot access the file for one of the following reasons…appears once per day, How to troubleshoot?

Our prod. setup is one web server, one sql server and one application server. On application server we have services installed which located one the sql server. We never had problems accessing the ...
1
vote
1answer
160 views

Loss of data when trying to fix ext4 “group descriptors corrupted!”

When I try to mount an existing disk, I get the message sudo mount -t ext4 /dev/sdc1 /data mount: wrong fs type, bad option, bad superblock on /dev/sdc1, missing codepage or helper program, ...
0
votes
1answer
64 views

Which file system was I using?

This is an odd question of a somewhat forensic nature. I was running a server, which originally had openSuse 11.4 installed, and was upgraded twice (to v12.3 and v13.1). Recently, an update messed up ...
0
votes
2answers
76 views

How to increase inodes? [duplicate]

How can I increase the maximum amount of inodes available on a dedicated server running CentOS 6.5 and ext4? The websites we are hosting create and use millions of small files. We are already hitting ...
3
votes
3answers
198 views

Maintain setgid bit (after bower install or gulp build)

We run web servers where we have the following situation: The www-data user runs the web server and must have read+write access to the files The deploy user deploys all the code The bob and alice ...
2
votes
2answers
109 views

Memory mapping files for a blazing fast webserver on Linux

Is there any simple way of telling Linux to keep a directory of files cached in memory? I realized that Node.Js and Apache are spending most time on file I/O, making users wait if you have a lot of ...
3
votes
0answers
100 views

ESXi 4.1 VM gone after hard reboot

I have a serious problem here. After I forced a reboot of a freezed ESXi 4.1 server, a VM is literally gone. When I ssh to the host and run ls -lah inside the datastore, it returnes: ...
3
votes
1answer
118 views

Filesystem performance degraded during RAID rebuilding

So quick question - our RAID6 array is currently rebuilding and there is a VERY noticeable filesystem performance hit (home directories are NFS mounted on the array). I'd sort of expect that, given ...
0
votes
2answers
37 views

Nginx deleted file still downloads

Scenario: Create a random file (1024M in this case) dd if=/dev/zero of=file bs=1M count=1024 Initiate download (curl src > /dev/null) Delete the file from the server Curl still downloads 100%, ...
1
vote
1answer
71 views

mount using nfs4 giving no such device error

I am trying to mount a folder workspace from server to the client over NFS. For this I bind the folder to an /export by adding the following in my /etc/fstab on server: /home /export none bind ...
7
votes
3answers
406 views

Install application/HTTP services to “/srv”?

I have been working with a team who used to install all the application and HTTP services like Apache or Tomcat to the '/srv' directory. I suspect mostly in order to keep the installed services ...
3
votes
4answers
439 views

Performance difference between ramfs and tmpfs

I need to setup an in memory storage system for around 10 GB of data, consisting of many 100 kb single files(images). There will be lots of reads and fairly periodic writes(adding new files, deleting ...
5
votes
5answers
390 views

Bash: mv directory one at a time

I am trying to move all subdirectories of a folder to another share on the same server. If I do a mv *, I will run out of space since the folders are not removed until all folders get transferred. ...
2
votes
1answer
42 views

How to add partition table to existing EXT4 filesystem

I have software RAID6 on 8x3TB disks (18TB), there is filesystem od device /dev/md1, but EXT4 can`t be bigger than 16TB so there is 2TB of free space. I would like to use this space. My first idea was ...
0
votes
0answers
71 views

Force filesystem check on Ubuntu Server 12.04.4 LTS

My root filesystem has errors. I have made sure that errors will be automatically corrected: root@host1 ~ » grep FSCKFIX /etc/default/rcS FSCKFIX=yes And then forced a filesystem check during ...
5
votes
2answers
859 views

Why the path “//” is working?

Tested on a debian and debian-based: $ cd // && pwd && ls // bin build dev home ... Why is the path // a valid path?
0
votes
1answer
23 views

Can I repair a file system with fscheck while it's mounted?

On a openvz hostnode some vps didn't shut down properly. There is no separate partition for /vz, they run in root. When restarting a vps OR copying a big file vz-dump (ca. 28GB) from one folder to ...
-1
votes
1answer
33 views

Server Writing Blank Files

I have an old desktop that sits on the side of my desk at my office. I use this as a web server to demo websites (it doesn't host any "live" production sites). I've never had many issues with it ...
0
votes
2answers
125 views

Best parameters for ext4 filesystem for storing virtualbox disk images

I have partition, which I'm going to use for keeping VirtualBox disk images (VDI, or may be VMDK). They are fixed-size (not dynamically-allocated) images. There are no other files/directories on ...
0
votes
2answers
34 views

linux minimal block size [closed]

Question : I would like to know if one could create an empty partition with a very small block size, say 100 bytes, and get their experience on the long run. Are there any gotchas ? Context : I ...
-1
votes
3answers
155 views

How to find out capacity for network interfaces?

I could get the capacity for the network interface by lshw, but which file in sysfs is this information stored(i.e. which file in /sys/class/net/eth0/device/ directory)? $ sudo lshw -class network ...
-3
votes
1answer
40 views

manually clearing my ubuntu-based linux tmp folder while booted from a linux live cd [closed]

If it is a temporary folder, then nothing should be required to remain there. Now I'm not looking to cause myself issues and I could just leave well enough alone but there are always folders and ...
-1
votes
1answer
62 views

Create a 'GitHub' style index page for files/folder on a fileserver [closed]

My workplace doesn't have a easy to use document management system, and I have no chance in building or installing one. Right now, people just throw files on a shared fileserver, where search doesn't ...
0
votes
0answers
325 views

ZFS import unable to find any pools

I had a ZFS pool -- a mirror containing 2 vdevs -- running on a FreeBSD server. I now have only one of the disks from the mirror, and I am trying to recover files from it. The ZFS data sits in a GPT ...
1
vote
2answers
63 views

How to use a file as a zpool?

If I do dd if=/dev/zero of=/tank/test/zpool bs=1M count=100 how can I treat the file /tank/test/zpool as a vdev, so I can use it as a zpool? It is for zfs testing purposes only.
0
votes
2answers
67 views

Which remote file system can be used on Linux without occupying local space? [closed]

I want to extend my server's local disk on Debian 6.0 by mounting a remote file system. But I don't want to have this remote file system to occupy (too much) local disk space, for instance with ...
0
votes
1answer
42 views

When does sychronizing files between servers get too much to handle? [closed]

Say I was creating a hosted application like wordpress, where people manage their blog. The key point I am focusing on is sychronizing the template pages between all my servers. So each customer ...
0
votes
0answers
67 views

AIX JFS2 I/O performance problems

I have a fresh installation of AIX 7.1. I noticed that JFS2 file system with logging enabled (log=/dev/hd8) is dramatically slower than one with log=NULL. Simple zip archive extraction takes 5 minutes ...