Questions tagged [filesystems]

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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Change ownership of NTFS to system on Linux?

I have a virtual NTFS hard drive on Linux. I have a file that I want to keep all human users out of without encrypting it on a Windows computer. I already figured out how to make a hidden file on ...
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File server corruption. Recovery suggestions

My file server was the victim of an underlying I/O issue on Monday, outcome being that some files that where created or changed Monday are completely gone... Before you say, restore from backups, the ...
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File not found/read error if file accessed immediately after saving it

I am running CentOS 7, working on a synchronously mounted network drive (NFS). EDIT: more system info: Server is running CentOS Linux release 7.3.1611 (Core) with kernel 3.10.0-514.16.1.el7.x86_64 and ...
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How to forward new files from an SFTP server?

I have an sftp server that partners send files to. As soon as the file arrives in the sftp directory, I want to read its contents and send the contents for further processing to another server. To ...
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Random json files getting set to 0 bytes

Over time I have been noticing some random files json files being set to 0 bytes. At first I thought it was just a bug in one of my programs but its been happening all over my system. When I try to ...
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How to mount a filesystem that also has remote filesystems mounted

I am trying to create a system for our developers to be able to use libraries that MUST be retained at the client's site. We are not allowed to download these libraries to develop off locally, but ...
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NTFS: When does Windows consider the newly added file exist in the system? When the writing process starts or ends?

When the file is being written to the disk, does the Windows System already consider the file exists or it waits until the writing process is done? Basically, I have a script that checks if a ...
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Force all files & subdirs that BY ANY MEANS come to be in/under a directory to inherit all permissions and group

I know this question may appear to be a duplicate, because many people have asked related questions about permission inheritance. However, none of the answers I've found address the full scope of what ...
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Utilize disk quota distributed on different places (server disk, additional mounted volume)

I'm renting a VPS where I run a Docker cluster. All the docker data is on a additional volume I rent and attached to the server. The VPS has its own disk space (40GB) but only a small part is used for ...
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Where did my bind mountpoint go? What is ZFS doing underneath with set mountpoint?

This is ZFS on Linux, under Proxmox 6.3-4. zfs.ko v.2.0.3-pve2 on kernel 5.4.101-1-pve #1 SMP PVE I create 3 filesystems, touch an identifying file in two, then set mountpoint of one into another, ...
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Ext4 metadata checksums: current feature status

The kernel wiki page for ext4 metadata checksums is marked "last modified on 22 October 2013". I couldn't find more recent status information on this feature, except for this question from ...
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ext4fs: Adding multiple flash storage (SSD) into one LVM volume (one at a time) + resizefs: Is it friendly for the flash storage

In the said use case as the title: The scenario to be, for example: In the beginning, I had one SSD drive with ext4fs, then after the storage was not sufficient, I added another drive by LVM + ...
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Linux mountpoint can not be unmounted no matter what?

I have a mount point in Linux that does not show any open files in lsof or fuser. The mount point was exported in NFS, but is no longer exported, and there are no more files or directories in the ...
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Which process made a file (or directory)?

A process on my computer keeps making a certain directory and I don't know which. I could start my system with an strace on every single process somehow, I guess, but I'd rather not do that. Is there ...
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`fio` does not timeout even specified?

# fio --name=random-write --directory=/mnt/test/ --ioengine=posixaio --rw=randwrite -bs=4k --numjobs=1 --size=4g -iodepth=1 -runtime=600 --time_based --end_fsync=1 random-write: (g=0): rw=randwrite, ...
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ZFS missing filesystem after interrupted backup

I have two filesystems in a pool, backup/nextcloud and backup/vm. Today, after a send/receive transfer was interrupted before it could finish (I was backing stuff up to these filesystems), I no longer ...
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Disable atime update for specific files or folders

I hit an scenario where the update of the atime field in a Lustre file system from several simultaneous nodes performing reads on a single file is causing a severe performance loss. Is there any way ...
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Illegal Request error with unmap on vmware

I have enabled unmap feature on vSAN and then I powered off / powered on all VMs to enable unmap as described in the KB below. https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere....
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How to force client to download files locally over SMB instead of holding the file open

Is there a way client or server side MacOS and Windows. To force a client to download files locally, rather than to hold the file open when being read? Similar to how Chrome OS does this.
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Btrfs - do I need to run balance operations frequently?

There seem to be reported issues of btrfs users in the past running into underutilized disk space issues if they did not run balance operations frequently to compact chunks and potentially change the ...
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Issue with fuse merge mount (merged mount point hangs while all merged folders work fine)

So, I am having an issue with a merge mount I have. I am using command to create the mount /usr/bin/mergerfs \ -o category.create=ff,async_read=false,cache.files=partial \ -o dropcacheonclose=true,...
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Is there anything else like NFS on OEL8?

I want to share a volume from an OEL8 server to two other OEL8 servers and let them read/write to the volume simultaneously. I've been asked to check if there are anymore secure methods/technology in ...
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Block Storage Metadata

What is the Metadata stored with file and block storage? I assume that file storage has metadata regarding to the hierarchical nature of file system like,what files,what directories,files/sub-...
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Convert ext4/xfs file system to btrfs with minimal application impact

I'm trying to find a way to convert the file system of app servers (some of which run ext4 and some xfs) to btrfs. Preferably, I'd like to do this without needing to turn off the services. So far I've ...
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Filesystem for a shared block device for a linux

Is there such a thing? I don't care about performance, I just need to be able to have access to the same block device from two computers. The block device does not have anything fancy (like ...
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Windows Server 2019 - Disk size not maching the diskpart info

we'd like to get your opinion on this weird issue: Environment Windows Server 2019 VM running on top of an ESXi 7.1 Cluster The storage subsystem is a compellent iSCSI array. The other windows VM are ...
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PowerShell: How to get a list of the top biggest files (of a certain type)?

Getting the biggest file list might look like gci -r|sort -descending -property length | select -first 10 name, length How can I add a specific filetype selection , like ascii or formated log/json/...
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RAID level and filesystem for a large storage server

This has been asked a million times but every time the answer is subject to "it depends on your requirements" condition, so I cannot extract a general guideline to apply to my case. So I ask ...
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In mac, not able to view or open a file which displayed while by `locate` command [closed]

OS: MacOS When I try locate acronym a folder named acronym and all the contents in the folder are getting displayed, but I am not able to view or open any of those files. I was able to view and access ...
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Difficulty adding new folder in network root directory

Hey I hope you all are having a good day here. I started a position at a new company and am working to add a new file directory at the root level of our network drive called \\data. When I go to add a ...
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How to determine directory size of macOS with apfs?

I have a situation on my Mac, where I would like to know the real size of all files combined of a given directory. Below is a screenshot of the Info panel for a selected directory with almost 4TB, ...
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How to force re-read XFS file system contents

In our computing cluster we have set up a simple but quite effective way of serving data to computing nodes. The storage system provides to luns that are merged with LVS and on top of that we build a ...
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How to make Certbot respect Debian standards for certificate deployment?

Certbot seems to manage X.509 certificates and private keys in its own directory structure in /etc/letsencrypt. On Debian-based systems (including Ubuntu, Linux Mint and others) X.509 certificates are ...
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df shows negative values for used

I am running Centos 7 and have an issue that the server ran out of space, was able to get in after a bad reboot and cleared temp files. Then cleared backups and server was back. Since then I spotted ...
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AWS XFS performance issues. Stripped setup vs single disk setup

I wanted to share an issue (I guess I may be misunderstanding some concepts) that I'm facing with some benchmarks I'm doing to XFS setups, as we are going to recently migrate a service to a new ...
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is the linux directory inode different then the file inode?

Im currently reading the book "How Linux Works" by Brian Ward and on chapter 4.5 it is said "A directory inode contains a list of filenames and corresponding links to other inodes&...
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How does one go about using master to master replication along with something like rsync to keep two identical copies of an application identical?

I have servers that do things for me at home, for instance they keep copies of my bookmarks in the way that del.icio.us used to (nextCloud) and keep copies of my code (gitea). Initially I thought that ...
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zfs send multiple snapshots

I want send several zfs snapshots to another pool. Source pool "rpool", target pool "dpool" rpool/kvm1380_img 88,6G 1,48T 77,6G - rpool/...
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Is it a good practice to create a folder in /?

I'm currently working on a project where some install script of some other teams are creating a lot of files/scripts and others various stuff in a folder located in /. eg: /installfolder Is that ...
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Interpreting resize2fs shrink progress (-p) “pass 2” output

The question: What is resize2fs's progress bar indicating during "pass 2" of an offline shrink operation on a large (8-28Tb) ext4 filesystem? The details: I've done ~5 resize2fs shrink ...
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losetup does not work well on

I'm trying to deploy certain tools as part of a debian buster docker container.. For the tool to work properly, a crucial step is to run a shell script, which generates a file system disk, which later ...
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weird filesystem behavior (corruption?)

Something very weird I came across, any thoughts would be much appreciated: Some software (httrack) created a directory structure. Using my user (which also ran the software), I cannot view the ...
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Ridiculous Number of Files in a Directory

My employer acquired a company with one particular piece of software that stores a lot of PDF and PNG file files in one directory. When I first replicated it from AWS, there were about 11.5 million ...
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Extend LVM partition

I need to extend existing LVM mounted to /opt. I've created new volume sdb2 and mounted it to /opt, but disk space in df -h output still the same. What esle should I do? lsblk output: └─sda3 ...
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How To Change /Lib Directory

Production server / is only 50GB and it's full. 23GB is in /lib | /snapd 11GB /flatpak 7GB I see the snap store is installing snaps to /var/lib/snapd | I have a second drive /dev/sdb that has 500GB of ...
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Would a flat or tree-like file structure allow for faster fetching of files by Path?

Would a flat file structure allow for faster locating/fetching of files by Path in an NTFS (Windows 10 File System) or would it essentially be as efficient as a highly structured tree with a bunch of ...
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Change HDFS replication factor

I've changed replication factor from 3 to 2 for some directories with command: hdfs dfs -setrep -R 2 /path/to/dir but my HDFS free space still the same. Should I do something else to free my disks?
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GCP: Why do 2 different instances in 2 different projects share the same file system?

I'm new to GCP. I've created 2 projects. In each project, I created a compute engine VM instance. The instances have different names but are located in the same region and loc. When I go into gcloud ...
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Why is the size of read requests limited to 32 pages?

The FUSE man page says about max_read: With this option the maximum size of read operations can be set. The default is infinite. Note that the size of read requests is limited anyway to 32 pages (...
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How to move a subvolume to a new drive in btrfs?

I am trying to move my /srv, /var/lib/mysql and /home directory to another drive ( a bigger one with RAID1). I did some research on how to go about doing this and I kind of did most of it. However, ...

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