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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Order of execution: First file system, then array vs. first array, then file system

Suppose I have two HDDs, same manufacturer, same model, same attributes (volume, speed, cache, ...). Both are equally partitioned. I want to have a level one array of two disks with one ext4 ...
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1answer
33 views

How to save Tbs of Photoshop Files efficiently in my file server? [on hold]

I have a File Server with 1Tb of PSD(photoshop) files. We are a printing company and this psd are directly being used by online editor panel. I am try to compress these psd but I can't zip/tar them ...
2
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1answer
350 views

Mount Docker container contents in host file system

I want to be able to inspect the contents of a Docker container (read-only). An elegant way of doing this would be to mount the container's contents in a directory. I'm talking about mounting the ...
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0answers
36 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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2answers
275 views

Filesystem Hierarchy Standard - Where to put sourceable functions?

I have a few bash scripts running system checks. These scripts source configuration options from a file /etc/healthchecks/config. Along with the config file, I have a shared functions file. The ...
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4answers
1k views

Re-sizing disk partition linux/vm

I VM Player running a linux guest and I was wanting to know how do I expand the disk? In the VM player I gave more disk space but I am not sure how to mount/expand/connect the new disk space to the ...
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6answers
11k views

How can I tell what filesystems are on a disk in AIX?

I use the tool "topas" to get a quick peek at CPU, memory, and disk statistics on an AIX machine. I understand the numbers on the disk section, but what I don't know is how to tell which ...
114
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5answers
32k views

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
18 views

Analysing root cause of file system errors in Debian

My VPS hosting provider just helped me to restart my Debian VPS after it failed to reboot. He told me there were file system errors but told me to refer to the logs in order to find out what happened. ...
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1answer
44 views

How to generate random files and directories that are scattering across the whole partition? [closed]

I want to perform a heavy test of using "resize2fs" to shrink the file system. Currently, I have script that creates a few hundred thousand files taking several hundred GB. But it doesn't take very ...
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0answers
13 views

Check Filesystem of Root Volume (Amazon Linux / RHEL)

How can I check the file system (and repair potential errors) of the root EBS volume (/dev/xvda1) of an Amazon AWS T2 instance? The instance runs the latest version of Amazon Linux (RHEL). Is it ...
2
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1answer
46 views

Why can't a GPT partitioned disk on SATA be read on USB?

If I GPT partition a 4TB disk when it is connected to SATA, then it works fine. If I take the disk and put in the an USB3 enclosure, then I get [root@localhost liveuser]# sfdisk /dev/sdb sfdisk: ...
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7answers
3k views

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
27 views

Fastest way to remove numerous big files

I have a directory with integration tests temporary files, which has the following structure: TestTemp --- Test01 (~1.5TB) --- Subdirectory01 (~100GB) -- Destination JSON (1-100MB) ...
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1answer
13 views

Restoring OpenVZ Container Filesystem Backup

I have a server running OpenVZ -- everyday, a full filesystem backup is made to another server. However, there are no VZ container snapshots being made. So, I have a full filesystem backup of ...
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2answers
147 views

btrfs Integrity and Stress Testing

A DevOps colleague is recommending that we begin transitioning our production environment to using btrfs. We have primarily ext4 filesystems, though some low-usage servers using ZFS (on Linux). As ...
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3answers
924 views

Unable to list contents/remove directory (linux ext3)

System is CentOS5 x86_64, completely up to date. I've got a folder that can't be listed (ls just hangs, eating memory until it is killed). The directory size is nearly 500k: root@server ...
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2answers
47 views

how to backup partition layout?

How I can backup(and restore) partition layout of the Disk along with file system types,UUIDs,labels,LVM partitions(Linux LVM) etc, plus with MBRs and VBRs etc but without actual files I want to ...
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0answers
22 views

Dealing/Fixing the Ploop issue with OpenVZ — relclaiming lost space

So OpenVZ Ploop has a bug where if users add then delete files the space becomes unclaimed and the disk eventually runs out of space. Now there is a script that fixes that(included below). However, ...
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2answers
78 views

Cannot get ZFS pool created in OSX to import on Linux system [closed]

I'm experimenting with different file systems for use between a dual-booting Linux/OSX laptop which will act as a testing platform. Despite being a BSD variant, I've had a lot of trouble finding a ...
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1answer
28 views

File system and file permission [closed]

Where does permission of a file reside. Is it attached to the file itself. I'm uploading a File to a different server. But there was some issue with the uploaded file. The guy who supported us for ...
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2answers
835 views

Why do mounted file systems without ACL options still respect POSIX ACLs?

According to mount, the file system does not have the ACL option: $ mount /dev/mapper/sys_vg-root_lv on / type ext3 (rw) However, I could still setfacl and getfacl on this file system. Perhaps I'm ...
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2answers
32 views

Maintaining Linux file owner and group info in a multi-user system

I have a web application running on Linux (using CentOS 6) using a generic non-root user name, say app1. I've associated all the files under the folder /home/app1 with that user/group (using chown -R ...
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1answer
10k views

Deleting windows.edb and unchecking Indexing service lead to hard drive file records swapping

I followed the instructions listed here:http://www.mydigitallife.info/2007/09/18/turn-off-and-disable-search-indexing-service-in-windows-xp/ to free up space on hard drive by deleting the windows.edb ...
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1answer
23 views

Storage Spaces: Will removing a used USB 3.0 retain the data in a 2-way mirror setup?

So I've just realized that the ReFS filesystem, although promising in a Storage Space solution, doesn't have certain NTFS features that I need. So I'm contemplating going back to NTFS. Problem is ...
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2answers
1k views

No posix acl in debian Wheezy with ext4

I was running a new script and encountered the following error: Your filesystem or build does not support posix ACLs So I thought no problem, just add acl,user_xattr to my fstab. It now looks ...
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2answers
1k views

Proper way to create a zfs off an existing directory?

Lets say I have an rpool with etc/ as a regular directory within it and now I want to create a separate zfs rpool/etc, obviously inheriting all the data I had in original /etc. What would be the most ...
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3answers
24 views

How can I modify the wtime of ext filesystem

How can I modify the superblock of an ext filesystem so that I can set the field wtime (Last write time)? I've tried with debugfs: debugfs 1.42.9 (4-Feb-2014) debugfs: open /dev/sdd2 -w debugfs: ...
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1answer
43 views

How to find out file path of file on a network share drive?

I am using a small .NET application which integrates a file into another application, however, I keep getting the following error in EventViewer (part of the .NET application): "The specified path, ...
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2answers
107 views

Change partition and / or mounting CentOS 6.5

I never did it before, please keep that in mind if I ask a beginner question now, but the info I've found on the internet weren't really useful for my case. df -h Filesystem ...
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2answers
46 views

parallel filesystem without SAN infrastructure

Is there any parallel filesystem that doesn't need SAN infrastructure ? What I want to do is to create a logical volume and attach it with multiple VMs that will use the disk concurrently.I don't want ...
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0answers
23 views

“Hot data” and erasure coding: how to know if it is efficiently handled?

It is well known that erasure coding adds extra complexity because of encoding and decoding operations. Due to this drawback, most of cloud services recommend to use data replication for hot data and ...
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1answer
45 views

CDN and TTL on local EC2 files

I Have a file in CDN and I need a local copy of it in all of my EC2 instances. I like to set a TTL on the local copy of 5 minute, and have one of the following: Have it Fetch automatically as soon ...
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0answers
30 views

OpenBSD automatic filesystem check at reboot

I want my openbsd server to boot, no matter what and dont break with waiting for manual FSCKing. It's easy to do in linux, but in obsd it just doesnt want to be "auto". Last time I set the 6th,7th ...
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1answer
896 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 ...
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1answer
20 views

Unable to read some files on hard disk

Our server has two independent hard disks without RAID. One hard drive just for storing junk/temporary data where we generally delete temporary data using LRU algorithm. We have a 10k file in that ...
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0answers
23 views

KVM Image consumes more space on disk than what du shows

I have a kvm image which by looking at it with du -sh consumes 13GB (12980888) but in reality it consumes 42GB. Found that out the hard way when I scped it and after 18GB it was still copying ...
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0answers
16 views

Stop gluster volume to increase initial sync

I have a question with no answer at the moment. I have a running glusterFS node of 2 brick, replicated. From a third server we are migration around 1.5T small files (less than 1 kb) to the node01, ...
0
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1answer
54 views

PHP can't save sessions due to permission error

I know that this question must have been asked (and answered) before, but I can't find a solution for my problem in any of those questions. It's a bit odd... The problem is that my PHP scripts (and my ...
7
votes
2answers
13k views

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 ...
4
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4answers
66 views

Setting the noatime flag for filesystems inside an lxc container

My host filesystem is ext4 mounted with the noatime flag. But inside an lxc-container, the flag is absent. Here's the output of mount on the host: /dev/sdb1 on /home type ext4 (rw,noatime) And ...
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votes
2answers
147 views

S3 based file system capable of requesting only part of file

I'm storing large datasets in s3, but on a given computer in my cluster, my program only needs to read a small subset of the data. I first tried s3fs, but it downlooads the entire file first, which ...
10
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8answers
4k views

Best file system for external (USB) hard drives/USB memory media

Almost all external USB hard drive and USB memory media/sticks come today preformatted with FAT32. As far as I know the only advantage of the file system is the compatibility among OSes and devices. ...
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7answers
3k views

Which file system to use for portable hard drive shared among different operating systems?

Something similar has been asked already but my criteria is a little different. I need to share a portable hard drive (USB/Firewire) between Mac OSX, Linux and Windows XP systems where the files being ...
2
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1answer
54 views

Linux filesystem page cache - hot or not

How can you tell how much of the filesystem cache is hot (frequently accessed) or not? The use case would be determining when you are approaching the limits of your memory but before you actually hit ...
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1answer
50 views

Does changing /sys/block/sda/queue settings take effect immediately?

How long does it take for changes to the following settings to take effect: /sys/block/sda/queue/scheduler /sys/block/sda/queue/rotational /sys/block/sda/queue/read_ahead_kb Is it ...
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1answer
219 views

Centos 5.5 [Read-only file system] issue after rebooting [closed]

I have a virtual server under centos 5.5 (hosted by a japanese company called sakura ) Since yesterday, connection through ssh couldn't be established. I've contacted support center who told me to ...
3
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1answer
91 views

Move, and split up, 5TB of data

Here is the scenario: I have 5 TB (yes, that's a T) of files on a Windows server that I need to migrate to a new server in as short and efficient time as possible. (Think: Robocopy, Rsync, etc as I ...
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1answer
50 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 ...
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2answers
3k views

Running resize2fs on /

I'm trying to resize an ext4 filesystem on a Fedora 11 box. Using fsdisk and lvm, I was able to grow the partition and logical volume containing the filesystem. When I try to run resize2fs on the ...