Tagged Questions

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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1answer
15 views

FreeBSD and tunefs(8): minfree option

The minimum free space threshold in FreeBSD is 8% which I think is too high. In a 1 TB Hard Drive, 80 GB of space is unusable. I need some more space in my hard drive. I want to reduce this ...
1
vote
1answer
41 views

delete millions of files within a directory

The other day I ran bleachbit on my system. I had enabled wipe disk space option in it. It took several hours and my disk space filled up completely (100GB or so). After waiting forever, I decided to ...
0
votes
1answer
16 views

Ubuntu/Mac Setup — Show Samba and Netatalk

I have setup Netatalk at my home for Time Machine backups, and I would also like for my samba shares to show up on my MacBook. Here is what I currently see: ...
0
votes
0answers
20 views

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 ...
-1
votes
1answer
35 views

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

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 ...
0
votes
0answers
65 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 ...
1
vote
1answer
19 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. ...
0
votes
0answers
14 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 ...
8
votes
2answers
282 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 ...
0
votes
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 ...
0
votes
1answer
14 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 ...
0
votes
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) ...
2
votes
1answer
52 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: ...
0
votes
2answers
52 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 ...
1
vote
0answers
27 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, ...
-1
votes
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 ...
0
votes
2answers
91 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 ...
2
votes
2answers
33 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 ...
0
votes
1answer
25 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 ...
0
votes
1answer
52 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, ...
2
votes
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: ...
0
votes
2answers
176 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 ...
1
vote
0answers
25 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 ...
-2
votes
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 ...
0
votes
1answer
48 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 ...
0
votes
0answers
34 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 ...
0
votes
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 ...
0
votes
0answers
24 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 ...
0
votes
0answers
19 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
votes
1answer
59 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 ...
2
votes
1answer
55 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 ...
2
votes
1answer
62 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 ...
4
votes
2answers
180 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 ...
-2
votes
1answer
303 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
votes
1answer
93 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 ...
4
votes
4answers
67 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 ...
0
votes
1answer
57 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
votes
1answer
369 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 ...
0
votes
2answers
66 views

Backup strategy for millions of files in lots of directories

We have millions of files in lots of directories, for example: \00\00\00\00.txt \00\00\00\01.pdf \00\00\00\02.html ... so on \05\55\12\31.txt backing up these to tape is slow as backing up data in ...
0
votes
0answers
113 views

Possible SMB issue after server migration

im troubleshooting a performance issue with one of our applications after a server upgrade. We have moved from server 2003 SP2 to 2008 R2 for our file/print. The application is installed locally on ...
6
votes
0answers
57 views

Fast distributed filesystem for a large amounts of data with metadata in database [closed]

My project uses several processing machines and one storage machine. Currently storage organized with a MSSQL filetable shared folder. Every file in storage have some metadata in database. Processing ...
0
votes
2answers
46 views

Moving folder of files from CentOS server to Ubuntu Server

I have a production server and a development server. Problem is the development server only has 20GB diskspace and about 8GB available. The folder of files I'm trying to move is 6GB(ish). I've ...
0
votes
2answers
56 views

Where should I place compiled source code [closed]

I'm running a virtual server for development purposes. On this server there are several packages which are compiled from source. I know the source of these packages should be placed in /usr/src. But ...
-3
votes
1answer
119 views

My production server has bad blocks, now what?

My server has crashed for Nth time in a couple of months, so I decided to do a badblocks test. I have used fsck to detect and mark badblocks, and it has indeed detected some. If I am correct, this ...
1
vote
2answers
1k views

Transparent compression filesystem in conjunction with ext4

I am trying to test a project that needs compressed storage with use of the ext4 file system since the application I use relies on ext4 features. Are there any production/stable solutions out there ...
1
vote
0answers
165 views

Directory index full, is this fsck result OK?

I found these in my /var/log/messages: kernel: EXT4-fs warning (device md2): ext4_dx_add_entry: Directory index full! kernel: EXT4-fs warning (device md2): ext4_dx_add_entry: Directory index full! ...
0
votes
1answer
81 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 ...
0
votes
0answers
63 views

Linux filesystem ext4 fragmentation

I have a question about the filesystem ext4 and disk fragmentation: Does ext4 place files in the same directory near or next to each other on the disk? And if so how is it fragmented, for example is ...
3
votes
1answer
37 views

Why would a bind mount unmount unexpectedly?

I have configured some bind mounts on all users's home directories to access a shared directory (or parts of it) that is somewhere else in the file system, so I have entries like these on my fstab ...
1
vote
1answer
107 views

Where to install GRUB 2 boot loader?

I have: sda and sdb which partitions is forming mirror RAID md0 md1 md2 md3 During update process, I was prompted where to install GRUB boot loader - on sda, sdb, md's or all together? What ...