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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Restoring brick on new server failes -

I am triying to attach a brick from another server to a local gluster development server. Therfore I have done a dd from a snapshot on production and a dd on the lvm volume on development. Then I ...
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78 views

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 ...
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134 views

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. ...
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96 views

glusterfs backup - how to migrate image to new server?

I am running glusterfs on a 3 node prod server with thinly provisioned LVM-Volumes. My goal is to automate a backup process that is based on gluster snapshots. The idea is basically to run a shell ...
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208 views

Why there shouldn't be too many files in one directory that serves just static web requests?

This might be a very general question but I really like to find some detailed answers or clues. I am discussing this with a friend, trying to convince him to put more than 300,000 files from one ...
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30 views

filesystems for scratch devices on solaris 11?

Can anyone suggest what filesystems are suitible for scratch disks? note majority of io will be via mmap. By scratch i mean scalable to many terabytes, but for short lived data that can be ...
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1answer
104 views

How can I check if a directory contains the same files of a TAR archive?

Let's say I have a folder Documents and a TAR file Documents.tar, how to check if the tar file contains the same files that are present in the directory? The more obvious solution to me would be to ...
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0answers
11 views

Get direct block addresses - Sleuth kit - XEN

I am using sleuth kit library in order to write an introspection tool for XEN hypervisor and my question is if we have the inode number of a file on a disk [ guest VM - ext4 filesystem], for example ...
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3answers
56 views

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 ...
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3answers
43 views

Is it possible to have orphaned hard links?

I'm not sure if it is even possible to have an orphaned hard link. Let me explain why I'm asking. Bear with me. My Setup I am using rsync to sync my file server to my backup server. I am using the -...
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1answer
22 views

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: ...
2
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0answers
38 views

Grow ZFS pool to use the whole disk

What's the (if there's any) way to grow a zfs pool that only uses a disk partially to use the whole disk? Background is, zfs is used here on a virtual machine and the Virtual machines disk has been ...
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1answer
38 views

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 ...
2
votes
1answer
69 views

Get file system write cache queue size

I am copying a large amount of files from one server to another via robocopy to a UNC share. I notice that after robocopy completes that there is a large amount of disk activity that lasts for a ...
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2answers
1k views

How to mount new logical volume (adding to fstab and mtab)?

I created a new LV for the first time using this command: lvcreate -L 20G -n iew-vm-lv /dev/ubuntu-vg #create the new LV When I try running mount /dev/ubuntu-vg/iew-vm-lv, I get the following ...
2
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1answer
91 views

Gearman writing “Too many open files” into the log. Disk space issues

We're running a service that makes screenshots of URL supplied and posts it to our S3 bucket. Similar to manet, but our custom coded nodejs app. We don't store the screenshots on our local hard drive. ...
35
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2answers
2k views

Unable to write to disk but disk isn't full

I am using Ubuntu 12.04 and can't write to any file, even as root, or do any other operation that requires writing. Neither can any process that needs to write, so they're all failing. df says I've ...
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1answer
57 views

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 ...
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2answers
52 views

Where do I place my web files using Ubuntu?

I'm spinning up a new server using Ubuntu hosted by IBM Softlayer I used CentOS before this. I placed my HTML, Javascript or/& PHP files in the folder /var/www/html. However this folder doesn't ...
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2answers
64 views

Linux file formats [closed]

On my RHEL system, I gave the following command: # file -sL /dev/sd* Here is the output that I received: /dev/sda: x86 boot sector; GRand Unified Bootloader, stage1 version 0x3, boot drive 0x80, ...
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103 views

Xenserver 6.5 Live Storage Migration

In my xenserver environment I have an LVM over ISCSI storage repository (SR) and I have another SR which is an NFS share setup on a synology server. To be clear, all servers are in one resource pool. ...
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3answers
149 views

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 ...
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1answer
40 views

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 ...
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1answer
21 views

how to sync files in linux - command prompt? [closed]

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 ...
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2answers
54 views

How To Optimize Huge Directory of Images

I took over the tech operations at a small company. However, the previous lead made the erroneous decision of storing 100's of GB's of images, even though our website only ever uses around 5GB of ...
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1answer
46 views

Windows File System over HTTP

It looks like you can mount a one drive folder, see: http://www.eightforums.com/tutorials/34847-onedrive-map-onedrive-pc-windows-8-1-a.html Question is what kind of file system is this? How can I ...
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votes
1answer
331 views

Change existing file type from standard file “-” to directory “d” as shown with Unix ls -l

In summary, if I use ls -l it yields something for a directory like... drwxr-xr-x and the reported error for a directory with files in it, is it shows as a standard file and ls -l yields... -rwxr-...
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1answer
549 views

Unable to read superblock on virtual server

After booting ubuntu 14.10 I got log output like this [1377286.486802] EXT4-fs (sda2): unable to read superblock I can login and use the machine but I guess something is wrong. Some diagnostics ...
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1answer
127 views

How stable and reliable is HAMMER in 2015? [closed]

It's been a long time since HAMMER came about. Has it been deemed reliable for general-purpose consumption yet?
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113 views

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 ...
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0answers
12 views

Debian used + available does not equal size (storage) [duplicate]

I'm trying to find out why /dev/sda1 Used+Avail != Size. I ran a df -h and the output I get is this: File system Size Used Avail Use% Mounted on /dev/sda1 320GB 683M 303G 1% ...
2
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0answers
84 views

Windows Server: Impact of high count of ACL entries on overall performance

I have been searching on this and just can't find enough information on the topic. We are trying to develop a custom folder / permission tool. The clients needs are quiet complicated as there will be ...
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2answers
142 views

How to resize a virtual machine running ubuntu in VMware 5

I was attempting to follow the instructions listed here http://www.joomlaworks.net/blog/item/168-resizing-the-disk-space-on-ubuntu-server-vms-running-on-vmware-esxi-5 I started with a 150 gig Drive ...
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0answers
95 views

How can i sync exist files on brick to new brick with replication in glusterfs?

I successfully installed glusterfs and set up 'Replicate' on 2 servers sudo gluster peer probe $NODE1_DNS; sudo gluster volume create file_store replica 2 transport tcp $NODE1_DNS:/brick1 $NODE2_DNS:/...
6
votes
2answers
354 views

What is reasonable storage failover time that most OS (VM) can tolerate?

I have a GlusterFS 2 node 2 replica setup. I am planning to use it as OpenStack instance store, in which the VM disk image is stored. From my tests, if the GlusterFS node which the hypervisor ...
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0answers
46 views

using testdisk to restore old superblock, cryptowall3.0 restoration

I have a drive that was infected with cryptowall3.0 Documentation states that the file is deleted and then from memory a new file is encrypted and that memory file is rename. Hypothetically restoring ...
2
votes
2answers
55 views

File permissions for Linux when editing in Windows

What I want is to move my development from Linux to Windows, using Docker's Tools (Kinematik, Machine, Compose). I'm still developing web applications supposed to be running on Linux in production, of ...
0
votes
1answer
174 views

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 ...
2
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0answers
92 views

Constrained Delegation between IIS, SQL Server, SSRS and File System

First of all, not sure which site is best suited for this question be it SO, SF or SU so please feel free to suggest migration! I have a requirement to constrain delegation between several machines ...
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0answers
177 views

Usage of overlayfs

I do host websites and need the ability to give people a staging area of their current site. Since sites can get pretty big I had a look at overlayfs. The idea is to create and overlayed folder on top ...
0
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2answers
68 views

Can a “virtual” SVN repository be created whose own folders point to folders in another repository (like a FS mount)?

I have a Subversion repo hosted on a CentOS-based server. There are several teams who require access to different parts of the repository. I'd like to allow different users to see different parts of ...
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0answers
49 views

After installing a new disk, can't use old mount points on linux

So, I'm stumped on this one. I have functionally two volume groups. vgold and vgnew, and I migrated the lvms from the old one to the new one (via rsync of the files to an external drive first, not ...
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votes
1answer
39 views

IIS SMTP to create emails as file

Is it possible to configure IIS SMTP to receive emails from client and store into a file? Yes? How? My company does not allow email communication on our secure domain (long story). So in order to ...
0
votes
0answers
181 views

Why is it not possible to mount a replicated gluster volume with one Gluster server?

I am running 2 glusterd on individual machines connected by private network. It apears that I can only mount the bricks if both deamons are up, otherwise it failes. As I am pretty new to glusterfs, ...
3
votes
3answers
294 views

Scaling beyond 65k open files (TCP connections)

I have a requirement for my Ubuntu 14.04.3 LTS server to have >65k clients connected to it via TCP. Although I have memory & cpu to spare I'm unable to get more than 65k clients to connect. I ...
0
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1answer
86 views

Are zero byte files an indication of file system corruption?

I recently noticed a strange behaviour. I could not restart a productive webserver running since more than a year because the configuration was invalid: # /etc/init.d/apache2 restart Syntax error on ...
1
vote
1answer
129 views

Slow file io performance after large network copy on Win7

In a step of our build process we run a tool that generates about 125,000 files. When generation is complete we copy them up to a network share so other systems can copy them down to process further. ...
3
votes
3answers
91 views

A good place for application files in Linux

I am rather new to Debian file system placing convention. I see that configuration files for applications are usually stored in /etc/{application_name}/ Is this a "go-to" place when storing actual ...
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2answers
249 views

mke2fs says “Device or resource busy while setting up superblock”

I'm trying to test restoring a backed up linux file system /apps (ext3 filesystem) /dev/cciss/c0d0p7 177G 3.8G 164G 3% /apps I ran the following command to take a dump: /sbin/dump -0uz -f /...
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0answers
14 views

Call to pythons os.getcwd returning odd results on Lustre filesystem

I don't really know if this question should be on Server Fault or Stack Oveflow, but I thought I'd try here first. I have a python application that makes quite a lot of calls to os file system calls ...