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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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24 views

Centos 7 Move storage space from one filesystem to another

I have a server using Centos 7, and with the storage capacity allocated as such: What I would like to do is take some of the space from the /dev/mapper/centos-home file system and give it to /dev/...
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0answers
23 views

zombie file under linux

When trying to unininstall cups from a linux machine some kind of "schrödingers file" was left behind: ls shows it, but otherwise its not there. System is ubuntu 17.10 / kernel 4.13, filesystem is ...
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3answers
15 views

Union multiple mounts to a single point, but keep them all read write

I've got over 1,000 directories, spread out over 6 servers. Technically they are home folders. It's guaranteed that there will never be any duplicate folder names. What I'd like to do is to mount ...
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1answer
36 views

Understanding XFS inode limits

I reached the inode limit on my XFS partition. There are plenty of questions about this. Some suggest the answer is to increase the maximum percentage of space allocated for inodes. Or, as the ...
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1answer
50 views

Master-Master File Sync between DataCenters

My problem is regarding a master-master (3 master nodes) file synchronization setup, where each node is in a different DataCenter. I have three application servers where users can create/modify/delete ...
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1answer
37 views

CentOS: eror when removing file: “rm: cannot remove '.viminfo': No such file or directory”

I have a file named .viminfo in home directory. I can see that the file is there by ls -lh: $ ls lh ... drwxr-xr-x. 2 mt1022 1091 4.0K Oct 12 2016 .vim -?????????? ? ? ? ? ...
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0answers
37 views

How to recover [unknown] disk from LVM2 on Proxmox

On my server, i have 5 disks. The disks are configured as follows: Raid 1 (Disk 1 + Disk 2) [320gb each] - Proxmox installed Raid 1 (Disk 3 + Disk 4) [1tb each] + HDD (Disk 5) [1tb] = totalizing 1....
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1answer
27 views

How to diagnose/fix slow file management on Windows Server 2012?

The setup is: FUJITSU PRIMERGY TX300 S7 RAID Ctrl SAS 6g 5/6 512mb (d2616) Windows Server 2012 64 bit Volume C: RAID 1 (2 HDDs) Volume D: RAID 5 (8 HDDs) The problem is: When we do ...
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2answers
60 views

How to copy user permissions in Windows server 2012 r2?

I have windows server 2012 r2 and two storage drive. lest say A and B. I have created users and given files and folder access in drive A but now it is crashed and now I want to give all the same user ...
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0answers
7 views

OpenShift: Restrict pod/container size

We have the following, somewhat hypothetical scenario: An application, running in a container. This application does not follow the design guidelines and doesn't log to stdout, but into a file. If ...
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2answers
134 views

what is the relation between block size and IO?

I have been reading about disk recently which led me to 3 different doubts. And I am not able to link them together. Three different terms I am confused with are block size, IO and Performance. I ...
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0answers
13 views

Gluster: how to setup distributed replicated volume with different size

Say I have 4 servers, each with ZFS volumes. Two servers with 36GB each. And two servers with 60GB each. I want to use glusterfs to setup two replicated volumes between the similar sized ZFS volumes. ...
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1answer
49 views

Re-allocate space from one Volume Group to another Volume Group - Linux CentOs

I have a dedicated server provided to me by 1and1. I started migrating websites to the server only to realise that I am running out of disk space. I had to clear my backups in order to continue ...
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0answers
15 views

Resize (enlarge) filesystem to partition size [duplicate]

I've got an 16GB SD card with Raspbian on it. $ lsb_release -a No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 8.0 (jessie) Release: 8.0 Codename: ...
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1answer
27 views

glusterfs client mount point fails with 'Client quorum is not met'

Assume a basic replica 3 arbiter 1 configuration, glusterfs-server 4.0.2 and glusterfs-client 4.0.2. glusterfs-client is installed on Ubuntu 18.04. In order to verify that write / read ops are ...
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1answer
237 views

Tool to track folder changes recursively in ubuntu 16.04

Is there any tool with which I would be able to track any changes happening recursively inside a particular folder? I have used inotifytools and fswatch but both are hitting the server performance ...
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1answer
125 views

How to verify checksum after copying 2 TB of 6 million files over USB?

I have a situation where I need to move over 2 TB of data from one server to another server in another data center. There are over 6 million files to copy. The plan is to move data in phases. For ...
0
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2answers
73 views

File system keeps becoming read-only

After working for a while, my filesystem (EXT4) becomes read-only. I then use my live USB to boot into live mode and I run fsck on the corrupted partition (and others too, to be safe). I run fsck -y ...
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1answer
38 views

I want to delete exiting partition on a ssd and then create a partition and then a file system on the same

I want to delete existing partition on an ssd and then create a partition and then a file system on the same. How can I do it using a single command based on fdisk?
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1answer
21 views

extend file system size on cloud server

On my 1and1 root cloud server I'm trying to extend my file system size after an upgrade. I should have 120gb instead of 70gb. I'm not very experienced with filesystem extending I'm on Ubuntu 16.04.3 ...
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0answers
29 views

Root cause for having a number of zero bytes in regular files

We have corrupt files that contain a number of zero bytes. I wonder what the root cause could be. What I know is: All kinds of files that were recently written are affected, they contain a number of ...
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1answer
55 views

Data Deduplication and ReFS

I have read a number of posts stating that only NTFS and CSVFS is supported with Data Deduplication, specifically not ReFS. However in this article, which is quite new, it states that it is supported:...
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3answers
194 views

Disabling ext4 write barriers when using an external journal

I'm currently experimenting with different ways of improving write speeds to a fairly large, rotating disk-based, software-raid (mdadm) array on Debian using fast NVMe devices. I found that using a ...
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0answers
49 views

what is the right filesystem for the kafka disk

we have hadoop cluster version 2.6.4 with 3 kafka machines we are thinking what is the best filesystem for the kafka disk - sdb ( 25T ) according to the article - https://community.hortonworks.com/...
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0answers
40 views

I got a power loss and my directory became a file (ext4, ssd), what to do?

After a power loss 1 directory (maybe more, I don't know) just became a file on my SSD (ext4 fs): -rw------- 1 postgres postgres 16K May 15 20:06 stolon It was a directory! How could it ...
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1answer
35 views

Corrupt `reverse i-search` database: why and how?

I made a recording of this as it's never happened to me before and seemed pretty weird: https://asciinema.org/a/qVSUzkIX2wLia7EzCFhCYHb9Q Under which conditions would the bash completion database ...
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0answers
52 views

Alpine Linux - root mounted as ro iso9660 filesystem how can I remount as rw overlay? [closed]

The root filesystem is an iso9660 mount. / # mount |grep iso /dev/sr0 on / type iso9660 (ro,relatime) Is there a way to remount root, using aufs in order that I can install packages, compile code, ...
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1answer
64 views

Ansible : format Filesystem subtask fails

I have below task which fails at formatting EBS volume and just do not proceed further. I've checked all the documentation here but I find no issue with ansible task I defined here. --- # tasks file ...
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0answers
25 views

Is it possible to disable the overlayfs directory cache

I have a process that's continuously writing files into a directory structure that looks like: 152527 ├── 1525270000000 │   ├── 01be6dc0b6e3e087.json │   ├── 067e2490bb7ee05c.json │   ├── ...
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0answers
34 views

File Server performance with simultaneous read/write operation

I have a WORKGROUP network with 50+ devices, all the computers can access a Windows Server 2008 R2 server which hosts all the media in the network. When one or some of the users are copying files from ...
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0answers
11 views

Is it possible to explicitly flush (synchronize) block devices in Windows Server 2008 R2 or later?

I have the following problem: One of my Windows 2008 R2 servers has a designated backup disk which is encrypted using VeraCrypt at disk level. That disk should be exchanged daily without restarting ...
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0answers
374 views

Cleanup /var/run full of systemd sessions

I'm running on a quite small server (2GB RAM) where the /var/run mount is 950MB and a quite long uptime (~600 days). I realized that /var/run is full now: Filesystem Size Used Avail Use% ...
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4answers
100 views

why does a file sometimes appear empty when being written to by another process

We have a situation where files are uploaded to a folder by FTP and then served by nginx. We've found that if the GET request immediately follows the modification of the file nginx returns files with ...
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1answer
55 views

What are all/most ways to enable/disable usage of async file-io in Linux?

To make a long story short, I have two identical servers hosting VMs using VirtualBox and both servers host one VM each nearly setup the same way, only that one is production and the other for ...
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1answer
61 views

How can I prevent high-volume filesystem writes from ovewhelming memory on my Linux system?

In several contexts, I've seen a behavior on Linux systems in which large volumes of filesystem write operations (e.g., many gigabytes of writes, very quickly) will overwhelm memory, apparently ...
2
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1answer
184 views

Character encoding on Windows Server 2008 R2

I have a problem with filenames on my Windows Server 2008 R2 machine. The files get uploaded by a webserver that runs Linux, on that machine there is a mount to our windows machine. When we upload ...
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1answer
62 views

Wish to set file undeletable but updatable

I don't think this is possible on any Linux file system. But I wish to have a feature of setting a file to be undeletable but keeping the file updatable. Note the latter requirement cannot be met with ...
2
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1answer
53 views

NTFS - writing small files performance variations

I have some test code that generates a list of 5000 small blocks of data (min. size: 351 bytes, max size: 386 bytes, average size: 385 bytes) and then writes them as separate files to a directory - ...
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2answers
135 views

How to choose appropriate filesystem for my KVM VPS guest?

I'm going to manually install Arch Linux from an ISO image on a KVM VPS that uses SeaBIOS. I plan to use grub2 as the bootloader. My VPS will not hold important data that needs to be backed up. I don'...
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0answers
49 views

Linux KVM readonly mount ext4 LV on host and guest simultaneously

Is it possible to read-only mount a Linux LVM Logical Volume ext4 (or 3) on both the host and the guest simultaneously? If ext3/4 cannot be used, is there any other well maintained FS candidate? ...
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0answers
64 views

XFS filesystem over 1 PB in size

My business requirements (licensing) require me to create a single XFS filesystem of over 1 PB with potential to grow to 2-3 PB in the future. This is to use as a backup repository so lots of ...
0
votes
1answer
49 views

How does file system selection at hyperviser affect KVM VMs?

I'm new to hypervisors and will be setting up a single host machine with a hyperviser that supports multiple filesystem types (LVM, ZFS, NFS, Glustfs etcetera) - this hypervisor will then run a small ...
0
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1answer
38 views

Domain Users Unable to Access Home Directory Without Sharing Folder

So I run a windows 2012 r2 for a client with 20-30 employees. I have created a home directory for each person as a means to save data onto the server. However, recently new users that are added are ...
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1answer
78 views

need to reset dirty bit on usb flash memory stick

We have a usb memory stick that FreeBSD-11 will not mount because its file system is not clean. It is not clean because it was removed from an extension cable while it was mounted on a FreeBSD-11 ...
0
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1answer
95 views

How to pass multiple options to `tune2fs -E mount_opts`?

According to the manual: mount_opts=mount_option_string Set a set of default mount options which will be used when the file system is mounted. Unlike ...
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1answer
29 views

Ubuntu - Allow access to subdirectory and files under a directory, but not give access to the directory itself?

Good day. I have a Server that's running on Ubuntu 14.04 with a LAMP Stack. So far, I've been able to host webpages on it and it's been working great. However, I want to limit what the users see. I ...
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1answer
65 views

zram filesystem reports different usage at device level to that reported by the filesystem

We have an 80GB zram device defined on our host, and within this a 170GB ext4 filesystem: echo 170G > /sys/block/zram0/disksize echo 80G > /sys/block/zram0/mem_limit /usr/sbin/mkfs.ext4 -...
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1answer
69 views

How to fix inode 2 on a FreeBSD ufs filesystem

My FreeBSD 11.1 system keeps panic-ing with this: kernel: panic: ufs_dirbad: /mnt: bad dir ino 2 at offset 0: mangled entry For such an error most forums suggest an older article (http://phaq....
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1answer
67 views

how do I extract a tar archive with larger block size?

I have a tar ball that has a huge number of very large files. The blocking factor is 10k. This is taking too long to extract because it does a lot of 10k writes. The filesystem will perform better if ...
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3answers
3k views

Program file exists in /usr/bin, but cannot be used

Clearly my file exists in /usr/bin $ ls /usr/bin/ngrok /usr/bin/ngrok However, when I attempt to chown it I receive an error $ sudo chown my_user:users /usr/bin/ngrok chown: cannot dereference '/...