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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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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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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1answer
36 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/...
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1answer
1k views

What cause high CPU usage on the server during file upload

When I try to upload a huge file size (approx 2GB), the server cpu usage goes really high. What should I do to fix this? I just use standard html form and php, for file upload. I'm sorry if I post ...
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12answers
36k views

ZFS vs XFS

We're considering building a ~16TB storage server. At the moment, we're considering both ZFS and XFS as filesystem. What are the advantages, disadvantages? What do we have to look for? Is there a ...
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2answers
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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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0answers
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 ...
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2answers
49 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 ...
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2answers
412 views

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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5answers
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Is there a way to delete/truncate a file while a process is writing to it?

We have an apache server running on linux writing to a log file that is getting really large (access_log). Our server will begin running out of space. Is there a way to delete or truncate the file ...
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3answers
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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 = ...
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1answer
31 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-...
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4answers
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LVM dangers and caveats

I have recently started using LVM on some servers for hard drives larger than 1 TB. They're useful, expandable and quite easy to install. However, I could not find any data about the dangers and ...
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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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1answer
1k views

s3fs “could not determine how to establish security credentials”

I'm trying to use s3fs to mount an S3 bucket on to a standard AWS Amazon Linux AMI (with all the necessary dependencies installed). However when following this tutorial when I run: s3fs mybucketname -...
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0answers
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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 ...
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0answers
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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 ...
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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 ...
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2answers
8k views

Powershell: Single Script to “clean” multiple folders of files older than

I would like to create a maintenance script that would run on each of our servers to clean out common drop/archive directories. Preferably the script would use a reference file for the folder path ...
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1answer
39 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: ...
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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 ...
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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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2answers
3k views

Is there any way to fix a corrupted LDM database?

TL;DR: Are there any tools/approaches to diagnosing and fixing LDM (Logical Disk Manager) metadata structures without recreating from scratch? Full description: I have two SSD drives set ...
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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 ...
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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 ...
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3answers
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mkdir: cannot create directory `b': Disk quota exceeded

When i try to create a file or dir on my Ubuntu 12.04.2 LTS vserver i get a mkdir: cannot create directory b: Disk quota exceeded. But: Filesystem Size Used Avail Use% Mounted on /dev/simfs ...
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7answers
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Is btrfs production ready?

I've seen a lot of information on btrfs lately. I have been considering ext4 for my next filesystem, but am tempted by btrfs instead. How widely used is btrfs? What are the pro's and con's?
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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, ...
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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 ...
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1answer
121 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 ...
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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, ...
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1answer
71 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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2answers
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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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3answers
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How long should resize2fs take on a 1TB partition?

I've got a new computer at the university and almost set up everything for myself on it when I've noticed that the previous user of the machine used a huge 1TB ext3 partition only. I usually keep /...
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3answers
3k views

Some users unable to see files that others can see

I have a file server running on Windows Server 2008 R2 in our domain that houses files created by an application and then moved to a folder available as a share to some users here. Users who use this ...
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1answer
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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....
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10answers
14k views

Distributed Storage Filesystem - Which one/Is there a ready to use product?

With Hadoop and CouchDB all over in Blogs and related news what's a distributed-fault-tolerant storage (engine) that actually works. CouchDB doesn't actually have any distribution features built-in, ...
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2answers
274 views

All of the NTFS hard links disappear, where are those 0KB hardlinks stored on disk and how to recover them?

This is Windows 7 x64 sp1 on a NTFS file system. All hardlinks within C:\Windows\System32 folder disappear, and the Windows can't boot, because even the osloader, C:\Windows\System32\boot\Winload.exe ...
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. ...
3
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4answers
3k views

Robocopy hiding folders on backup drives

I have a backup batch file that uses Robocopy to backup my files (note this example contains newlines that you should remove): robocopy "C:\" "G:\Default\RoboCopyBackup\C" /XF Pagefile.sys /XD "...
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8answers
32k views

'Permission denied' to a file I own?

My user, bob, can't access files that he (theoretically owns). I'm running Fedora Core 8. It probably easier to shown than tell: > ls -al . total 32 drwxrwxr-x 7 bob bob 4096 May 18 14:33 . ...
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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 ...
5
votes
3answers
4k views

Centos 6.3 install reiserFS support

I'm trying to change an existing ext4 partition to reiserFS in Centos 6.3 64bit. I've updated the kernel to Centos Plus: First, I've updated /etc/yum.repos.d/CentOS-Base.repo: In the [centosplus] ...
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0answers
64 views

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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2answers
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See what files are being written to (like iotop but for files, not processes)

I have a Linux server, and it's doing a lot of disk io. There is one process that is doing most of the disk writes. I found this out with iotop, which shows the processes that are doing disk I/O. Is ...
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5answers
74 views

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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0answers
35 views

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 ...