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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What are some techniques for reorganizing a file structure in a business? [duplicate]

At work I have gotten tired of how disorganized our shared drive is. I've determined the best way to reorganize everything would be to mimic the directory structure based on our organization chart. ...
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5answers
72 views
+50

Getting a file lock in Ubuntu Server

I have a folder in Ubuntu Server, where users from different client machines (also Ubuntu) can edit the files (via FileZilla, but any other will do). However, when one user is editing one file, this ...
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2answers
18 views

Logged file system access [closed]

Assuming the info is there, how I found out who accessed a certain shared folder or a file and made changes (like create a file and delete others) ?
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13 views

How to explain this? Superblock corrupt in SSD [migrated]

I got a file system corruption from a sudden power loss. During boot, it reported following error. error: unknown filesystem. Entering rescue mode... grub rescue> _" The board is an Intel ...
0
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1answer
37 views

BTRFS: “no space left on device”, but btrfs command says otherwise

I am using BTRFS to create a RAID0 volume from 2 disks. Both are on an AWS EC2 instance with 30 GB space available each. The command I used to create the filesystem is: btrfs -d raid0 -L MYLABEL /dev/...
2
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2answers
50 views

Linux user without any filesystem permissions

I need to make a linux user for the sole purpose of an SSH proxy. Amongst other things, the user should not be able to go around exploring the filesystem or even access a shell really. Obviously I ...
2
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1answer
33 views

Amazon Web Services EFS doesn't seem to be saving files

So I'm trying to use AWS EFS with EC2 to have persistent storage between multiple instances. I'm mounting the drive using, sudo mount -t nfs4 -o nfsvers=4.1 $(curl -s http://IPADDRESSHERE/latest/meta-...
4
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1answer
29 views

Linux no modify time (nomtime)

Is there a way to disable the mtime of an filesystem? There is an Filesystem independend noatime Option, but no "nomtime". Also in the Filesystem specific documentation for ext4 and/or btrfs i couldn'...
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2answers
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Ext4 usage and performance

I've got a cluster of machines running Carbon and Graphite that I need to scale for more storage, but I'm not sure if I need to scale up or out. The cluster is currently comprised of: 1 Relay Node: ...
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0answers
7 views

Managing large number of images on website [migrated]

I run a small image host that I originally started as a pet project for the users on a forum I frequent. Right now it has just over 12,000 images uploaded. The file names are generated dynamically on ...
0
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0answers
20 views

linux combined usage of quota on multiple mounts

Is it possible to enable quota on multiple filesystem mounts that operate as one. Say eg. you enable and mount quota's on separate filesystems: /home/data1 /home/data2 /home/data3 A user has a ...
1
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1answer
11 views

How to display root directories for a domain with DFS?

I am working with a DFS setup of the standard form \\domain.local\root. We are sharing these and to navigate to the DFS share users would type \\domain\sales or \\domain\support. How can I setup so ...
3
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1answer
40 views

EXT4 filesystem corruption

I have a CentOS 6x server and running a Java application on it, the application is using a mount point /javapp which is an EXT4 filesystem. suddenly I got the following error in the system logs: ...
27
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2answers
4k views

When is fsck dangerous?

Recently I've seen the root filesystem of a machine in a remote datacenter get remounted read-only, as a result of consistency issues. On reboot, this error was shown: UNEXPECTED INCONSISTENCY: RUN ...
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2answers
72 views

No Filesystem after deleting RAID

So I had the /home partition in two disks in RAID1, one disk failed so the system booted with lots of errors about that. I didn't have another disk to replace the one that failed, so I wanted to ...
2
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1answer
34 views

zfs mountpoint not using the dataset

I am currently building a media server based on Linux Mint. The OS is installed on a small SSD and the intention is to store the media files on two HDDs (2TB + 4TB). To this end I have created a zfs ...
0
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0answers
18 views

Tracking filesystem changes in runtime

I need to have program that tracks changes made to the file e.g. when I am installing software from supplied installer instead of packages. I do not want to checksum every file in filesystem because ...
0
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1answer
21 views

How to set up LVM in this situation?

http://prntscr.com/bhyu4k I have a set up that looks like this, and I need to have sda3 and sdb under /home folder, all as one. I dont care about the contents of the current /home directory, ...
0
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1answer
48 views

How to combine an sdb disk with /home directory on sdb1?

I have two physical hard drives and the set up looks like this: http://prntscr.com/bhyu4k I need to partition the sdb1 (fdisk), create ext4 filesystem based on the type that is used on sda (mkfs ...
1
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1answer
122 views

How to copy a file to network resources using UNC paths

I'm trying to do something pretty simple, and conceptually it should work, but it doesn't seem to, and I'm not sure why. I have a file I need to copy to multiple folders on multiple servers. I've been ...
0
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1answer
40 views

Performance comparison of single RAID vs multiple filesystems

I'm trying to get maximum sequential disk throughput for an application on my Linux server. It has 7 SATA disks that I could put in one RAID0 or RAID5 using a hardware RAID controller (HP P420i). Or, ...
1
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1answer
73 views

Window can not find catalina.bat, even catalina is exist

When I try start tomcat in IDEA it gives me the below error message: Error running Tomcat 8.0.35: Cannot run program "D:\Tomcat\apache-tomcat-8.0.35\bin\catalina.bat" (in directory "D:\Tomcat\...
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3answers
42 views

Hyper-V how to connect compressed NTFS storage or convert it

I am on Windows Server 2012 R2, trying to connect to one Hyper-V virtual machine. The requested operation could not be completed due to a virtual disk system limitation. On NTFS, virtual hard disk ...
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1answer
33 views

How to mount a block device with no partition table in Windows

The filesystem starts from sector 0. I have an encrypted container on the host and want to pass decrypted media to the windows guest as a single physical device that is intended to be mounted on guest....
2
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1answer
56 views

Failing to mount SCSI from HP Modular Smart Array (MSA20)

I have acquired a HP dl360 g4p with a MSA20 Modular Smart Array. Currently I have Arch Linux installed on it since I had some issues with the graphics. But that is not why I am asking a question. ...
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1answer
22 views

Dir size increases after rsyncing to a different machine with same configuration

Have a MySQL (percona, 14.14 Distrib 5.6.28-76.1) machine with a 1TB SSD hosting around 712Gb of mysql data. MySQL has 4 databases, with, say database1, taking major space, 656Gb. Lets call this ...
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Samba/CIFS Ubuntu 14.04 mount error(112)

I'm trying to mount a samba network share on an Ubuntu 14.04 using cifs. On the server, I've got the share running. I can already map it as a drive in Windows. The share has a username and password. ...
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1answer
18 views

CentOS: How to group two partitions to one document root?

i have 2 partitions in my cloud server. And i want to group two of these become one as Apache document root. Because i have some websites and data is around 80GB. Does it possible? /dev/vda1 ...
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5answers
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How do I increase a partition size (that doesn't use LVM) without removing and re-adding it

I have /usr on a separate partition. At the moment, this is how the server is set up: [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 4.9G 329M 4.6G 7% /...
3
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2answers
311 views

Optimizing storage of 10-20 million files on RAID5 (currently using LVM+XFS)

Although I've browsed some of the questions here, I think every situation is different and maybe requires a totally different solution. What I have now: Linux software RAID5 on 4x4TB enterprise HDD ...
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2answers
62 views

ext4 mount flags for 10+ mill files storage

I've initialised one large primary partition with the -T small flag to mke2fs, small on the system is configured as follows: small = { blocksize = 1024 inode_size = 128 ...
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Estimate when a filesystem will be full

Background I'm managing about 50 CentOS 5.6 Linux servers in my workplace with some critical filesystems that store weekly backups of applications, databases and user workplace files. Problem Last ...
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1answer
40 views

What is the best way to isolate vhosts on a linux server?

Firstly, I'm wondering what is the best way to isolate Apache's vhosts from each other. I suppose this has something todo with the Linux filesystem as well, since it's not a good practise to have ...
0
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2answers
49 views

Granting FTP users access to multiple folders on CentOS

I'm have a web server running CentOS Linux 7.2.1511. I do most of the mundane management tasks through Plesk 12.5.30 Update #29 but I also SSH in and get dirty with the command line when I need to. ...
1
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1answer
30 views

Overmount existing directory contents at runtime

I have the following scenario: users run software installed in /path/to/software I create a file-backed FS image with exactly the same contents as in /path/to/software I mount the image using ...
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0answers
39 views

Branch office replicated file system

I'm looking for something that can replicate file systems between multiple branch locations. Our file servers currently run CentOS 7. I feel like there has to be a better solution that what we're ...
2
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0answers
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How to interpret the contents of /lost+found after serious filesystem corruption?

I am trying to work out whether some serious filesystem corruption is recoverable or not - however, I am struggling to find a definitive description of what i am seeing in /lost+found anywhere on the ...
4
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1answer
91 views

Rsync takes 8+ hours to backup 15M+ files

I have ~700GB storage where I store ~15M files, hence average file size is ~50KB. To back it up, over night I run a simple rsync script with the following set of flags: --archive --update --compress -...
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0answers
32 views

Can't find used inodes on server

I have a Xen VPS with Debian Linux installed. Once I found that all inodes are used. I checked this: ~# df -i Filesystem Inodes IUsed IFree IUse% Mounted on rootfs 3932160 3932160 ...
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Windows Server: file system limitation

We are developing an app for tablet which uploads and saves photos taken by the user. The problem we are suddenly meeting is that photos are not saved anymore in our directory in our Windows server ...
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2answers
107 views

How to correctly create a filesystem on disks that are connected to a RAID disk?

I want to create a ext4 filesystem on sda, sdb, and sdc and mount them to use them but I don't know how to handle all the raid stuff. lsblk output: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda ...
4
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0answers
62 views

Can Btrfs use SSD for metadata and leave bulk data on HDD?

is it possible for Btrfs to use SSD for metadata only & leave bulk data on less costly storage such as HDD? I refered to this page Using_Btrfs_with_Multiple_Devices and can not find a solution. ...
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1answer
43 views

How to avoid loosing changes on the root filesystem when kernel upgrading?

On Solaris and variants, it makes a zfs clone of the current / filesystem and installs the new kernel there. When rebooting you get the new /. In my case I have a /scripts directory, so if I ever ...
3
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2answers
85 views

how do I check if a bind mount on linux is private or shared?

The mount command allows us to make a bind mount shared, slave, shared+slave, private or unbindable, however, I was unable to figure for a given mount point what is type of subtree rooted at the bind-...
7
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1answer
141 views

Sluggish performance on NTFS drive with large number of files

I am looking at this setup: Windows Server 2012 1 TB NTFS drive, 4 KB clusters, ~90% full ~10M files stored in 10,000 folders = ~1,000 files/folder Files mostly quite small < 50 KB Virtual drive ...
0
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1answer
27 views

Can't find logical volume when booting imported disk images in Xen guest

I've got a couple of drives I copied over using ddrescue to image files for booting under Xen. They contain an LVM volume group with a couple of volumes in it, which was originally split across two ...
1
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1answer
49 views

df -h shows 100% usage but sizes don't add up [duplicate]

I have a situation where my root filesystem is supposed to have plenty of free space, but Debian behaves as if it had no free space left. Non-root users even refute to write anything complaining about ...
1
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0answers
89 views

XFS On VMware VM Fails With Bad Magic Number

I have almost exactly the same problem as described here. I am on RHEL7. 3.10.0-229.4.2.el7.x86_6 Inside vmware VM. file -s /dev/sdb /dev/sdb: LVM2 PV (Linux Logical Volume Manager), UUID: 89o2LY-...
0
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0answers
11 views

Create two users with different privileges for the same folder

I've the following scenario: I need to create two users that will access in FTP the same folder with different privileges by using vsftpd. What do you recommend me? Is it a good idea to create ...
0
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1answer
22 views

Can a folder on Linux be belonged to multiple users?

I have one folder on Ubuntu that can be read and written by user A and can be only read by user B. The solution I came up with is the following: create a group which have read permission on this ...