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Questions tagged [filesystems]

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.

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. A file system organizes data in an efficient manner and is tuned to the specific characteristics of the device. A tight coupling usually exists between the operating system and the file system. Some file systems provide mechanisms to control access to the data and metadata. Ensuring reliability is a major responsibility of a file system. Some file systems allow multiple programs to update the same file at nearly the same time.

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Using the output of a program as the contents of a file, dynamically

In Linux, I would like to create a file where the contents of the file are dynamically generated by the output of a program. The examples which already exist are /dev/random /dev/urandom, /dev/zero, etc... I would like to create a file such as…
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File transfer (copy) queue for a Linux cluster

I am running (on CentOS 6) a cluster connected to the head node over a slow network. Each spawned job needs to pull a ~1GB file from the head node to the compute node, and then process it locally. The head's filesystem is served via NFS. Allowing…
Dmitri
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I have 757 permission on some specific Linux directory. How can I grant read only access to user1?

757 allows read, write, execute by owner + read, execute by owner group + read, write, execute by others. Is there any way arround to specificaly allow read only to user01? Please exclude the solution with bind mounting, because this directory holds…
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Identical directories on Linux file system are not symlinks. What else they could be?

I found two directories on some of my systems which are completely the same. All subdirectories and all files are the same. When I delete a file in one directory it disappears in other too. This would indicate sym links, doesn't it? But ls -s…
Reb
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ZFS vs WinFS compare

What are main pros and cons of ZFS and WinFS filesystems ?
m1k4
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Heavy linux server load when many files in directory

I have a website that generate images for each user, which are stored in /images/user/. I have a server with 8 CPUs, so maximum server load should be 8, but the load on my server reach 100, 150, 200. Average image size is 50 KB, average number of…
Issa Manasrah
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How to mount large LVM image on ubuntu 14.04 on root?

I am running ubuntu 14.04.03 and need to mount thinly provisioned lvm volumes for glusterfs to the system. I did this first by adding them to /home/glusterfs/dir, this worked as /home has 120G of space and the LVM image just 20G. Now I thought it…
merlin
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Directory vs Files for efficient search and retrieval of files

I am working on a website where users have ability to store all kinds of media on the server and there can be any number of users. I thought I would store all the media which users upload like this: MediaRootDIR/UserRootDIR/file.xyz (UserRootDIR is…
Vignesh T.V.
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Is reboot necessary after expanding a disk/partition?

I'm running a virtual machine (Ubuntu 14.04 LTS) on VMware ESXi. The virtual machines needed extra storage as to why i raised the disk size in ESXi, and ran pationing etc. from the virtual machine itself. All was fine (i thought) as both the df -h…
SteffenNielsen
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How do I add storage to a VM so that the added storage is dedicated to a new directory?

I have an Ubuntu server with virt-manager. I have an Ubuntu VM running on this host from a qcow2 file. I don't use separate disk files or img files besides the qcow2 file. I want to allocate 50 GB of new storage space to the VM. On the VM, df -h…
Catbird55
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symlinks on shared storage

Say I have a glusterfs mount that is shared between multiple servers, which is accessed by an application, and logs are written to a directory that would normally be in the directory tree of that mount point. (say /foo is our mounted shared storage,…
Oblivious12
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Can Problems Arise When Multiple Servers Use One Mount

I am using Amazon Web Servers where I have an NFS file system that I mount to several other servers. One mount is shared between about 20 servers and the primary function of the servers is for a web application. While this is nice for now, will…
Devin Dixon
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how to sync files in linux - command prompt?

I see the following files in my directory - -rw-rw-r-- 1 sjos sjos 401 Oct 12 15:29 Makefile -rw-rw-r-- 1 sjos sjos 401 Oct 12 15:29 Makefile~ -rw-rw-r-- 1 sjos sjos 336 Oct 12 15:12 testIfaceIndex.c -rw-rw-r-- 1 sjos sjos 336 Oct 12 15:12…
dexterous
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Is there any default time-out for file locks on Windows network shares?

Sometimes it happens that I want to rename/delete a file on a network share, but Windows tells me that the file is currently in use, even if I know that nobody else is accessing that file. After waiting some seconds/minutes I can rename/delete the…
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Tmp folder and read-only-system...file system corrupt

fron 1 month I have always problems with my VPS. Before it was file system, it told Can't create/write to file '/tmp/ - error 30. My host had fixed the problem but today tried to upgraded Webmin and now doesn't work more: Installing package(s) with…
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