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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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% ...
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81 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
101 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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81 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 ...
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2answers
333 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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44 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
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2answers
48 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 ...
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1answer
127 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 ...
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0answers
73 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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154 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 ...
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2answers
60 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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47 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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1answer
33 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 ...
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0answers
162 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, ...
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3answers
238 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 ...
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1answer
71 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 ...
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1answer
106 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. ...
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3answers
88 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
161 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 ...
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78 views

File writes stall during heavy disk I/O on Linux box

I have two processes running on my box => A and B. Whenever there is heavy disk I/O activity caused by writing large files to the disk by process A, I see that file writes in process B are stalling ...
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20 views

du and df show discrepant amounts of available disk space on my Linux server [duplicate]

I know that inodes aren't necessarily deallocated with certain removal/deletion methods that users/programs use. When inodes are still present and pointing to files that have been deleted, but two or ...
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1answer
290 views

zfs checksum error in raidz1 vdev but not in disk

I am backing up data stored in a zpool consisting of a single raidz vdev with 2 hard disks. During this operation, I got checksum errors, and now the status looks as follows: pool: tmp_zpool ...
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1answer
54 views

sporadically, rsync takes exceptionally long

We do backups with rsync like this: rsync -axH --inplace --delete --delete-excluded \ --exclude-from=excludes --stats \ --link-dest="${previous?}" "${source?}"/ "${dest?}"/"${stamp?}" $previous ...
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22 views

Filesystem benchmark read tests

I am benchmarking my filesystem which is ext3 and I made few tests with program hdparm. To be exact I conducted hdparm /dev/sda4 -t test (/dev/sda4 is my ext3 partition). And I got results with ...
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2answers
242 views

Setting up tmpfs `/run/lock` for hundreds of thousands of 0 byte lock files, and dealing with the inode limit

I have a situation where I need to create 100s of thousands of 0 byte lock files for concurrency control. I've tested creating them by using: for i in `seq 1 50000`; do touch "/run/lock/${i}.lock"; ...
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1answer
91 views

Where to create an AF_LOCAL/AF_UNIX socket file when not allowed to write in /var/run?

FSH says that socket and pid files should go to /var/run However, for security purpose, only root can creates file and subdirectories in this location. A common solution is creating a subdirectory ...
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1answer
490 views

“cannot open shared object file: Input/output error” - for everything

pacman: error while loading shared libraries: libarchive.so.13: cannot open shared object file: Input/output error Almost every command responds with something like this, each with a different shared ...
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0answers
60 views

Mounting a remote filesystem using v9fs (client) and u9fs(server) does not give me write permissions

I am trying to mount a 9p filesystem on a linux client machine running v9fs as the 9p client with the following command sudo mount -t 9p -o ...
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1answer
528 views

Error: No space left on device when starting/stopping services only

I know there are multiple questions like this already, but none of their answers applies to my problem. So I tried to upgrade from Debian 7.7 to Debian 8.1. Every works fine, but certain operations ...
2
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1answer
385 views

Disable file cache for mount point

I ran into a bug similar to this one: RHEL NFS client returns NULL bytes when reading a growing file So my solution was to check for \0 Bytes and reread the file. Problem here is, that the wrong ...
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134 views

Proxmox-Server: Extremely high load during deletion-task of old backups

I'm using Proxmox to get some VPS. In Proxmox I set up some backup-tasks which are running fine. BUT: The backups are stored in big files (each backup has round about 300GB) so I can not store more ...
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93 views

How to prevent users from creating long paths

Long file paths cause real problems when need to move/copy or delete large amount of data that the path is 350 character long (max character allowed by Windows is 256) I was wondering if anyone knows ...
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1answer
947 views

Create file system on multipath volume

I'm completely new to linux admin and file system. Recently we acquired an HP MSA P2000 san. I've setup the disk into a vdisk and created 3 volumes on it. On Centos 7, I've also setup the multipath ...
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3answers
189 views

Creative way to shrink a live ext4 filesystem from cloud provider?

When buying droplets, as DigitalOcean calls their cloud VM's, they are always configured with one large ext4 partition. I have an app that needs an LVM partition, so I need a creative way to shrink ...
2
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0answers
811 views

What is a fast, efficient method for threading rsync

I have a single root directory (on a NAS) that I need to backup to another server. The hierarchy of the directory is several layers deep and a majority of the data is composed of extremely large ...
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0answers
32 views

Not recognizing path to credentials on fstab

I'm trying to mount a remote filesystem with fstab, and using a credentials file to load the username and password, but for some reason I get this error message when I try to use # mount -a: mount ...
0
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1answer
75 views

Gluster FS. Rebuild replicated volume

I am playing with GlusterFS. And now I am curious how to fully rebuild replicated volume. So I`ve created 1 replicated volume from server1 and server2 nodes: root@server1:~# gluster volume create ...
0
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1answer
277 views

Windows Server 2008 R2 Slow File Copy

I recently installed Windows Standard Server 2008 R2 with SP1 on an HP Proliant ML350 G5. This server has Sql Server 2008 Express with a few very small databases, and acts as a file and print share ...
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45 views

Save cache folder on seperate partition with superfast filesystem?

I'm reading about disks, partitions, filesystems, recovery. I have a lack of knowledge about them. To learn things I mentally model abstract situations. So, imagine... I have the ubuntu server with ...
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1answer
50 views

How to use an .lnx file on RedHat

I have an .lnx file that I need to use on the RedHat distribution. Any idea how to run / install it? I tryed to make it executable and jut call it but this doesn't work. Thank you.
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43 views

Restore shows tape volume error

I have used the below command to take dump on my RHEL server: /sbin/dump -0uz -f /data0101/backup_labeir1/labeir1_150622_123050_^apps.dmp /apps The dump is successful, but when I do a restore using ...
0
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1answer
27 views

Filezilla transfer file name colon replace

I have transferred a massive amount of files by filezilla. But a few scattered files are pending being transferred. They had failed since my filezilla server is on windows and filezilla client is on ...
0
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1answer
68 views

Linux: Mount a remote disk stored on a custom storage

We have a non-standard storage (FS) on which we have flat disk images stored. We need to extract data from this raw image on a different host. The word "extraction" here means that I want to copy ...
1
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1answer
197 views

How can I directly read data from a file in Linux without using the filesystem cache?

I have shared storage which is mounted (read-only) on SERVER1, and mounted (read-write) on SERVER2. SERVER2 is writing data to a file. SERVER1 is reading data from that file. The file poling is ...
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393 views

How to repair multiply-claimed blocks?

I get a lot of the following logs in dmesg: [26159.277230] EXT4-fs error (device sdb1): ext4_iget:3875: inode #394497188: comm mv: bad extended attribute block 22794025699896 [26219.914802] EXT4-fs ...
2
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1answer
34 views

Look through folder capability on Windows and Linux [closed]

I want to create a user playpen solution that is comprised of a look through pattern. Each user would have his own folder that he can see and write to. This folder will contain his/her personal files ...
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votes
1answer
51 views

Challenges of dealing with large disks/partitions

Currently doing research on creating a new file server. Server will be Linux based (CentOS 7) and will need to have around 8 TB of available space. Samba will be used to share the files. I am trying ...
2
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2answers
992 views

Optimize Linux file system for reading ~500M small files

We're seeing performance problems on a file system that contains ~500 M files that are relatively small (typically tens of kb) and ~150 K directories. Files access is predominantly reads and writes ...
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1answer
117 views

How much usable space will a 2TB+2TB+3TB+3TB btrfs filesystem have with data in RAID-1 mode?

I have a pair of 3TB drives in a btrfs filesystem, and I wish to expand this filesystem by adding two more 2TB drives, using the btrfs device add command. Data in the current filesystem is mirrored in ...