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Questions tagged [storage]

Use this tag to refer to any kind of data retention device (RAM, flash, hard disks, magnetic tape, punch cards, etc.), its means of separating pieces of information (files, blocks, sectors, etc.) or how to record and retrieve them. This is a very broad topic so selecting other tags relating to the medium (hard-drive, cdrom, etc.) or the format used on it (fat, ntfs, ext, f2fs, etc.) may help to identify it further.

0 votes
1 answer
18 views

Adding a fresh zfs sub-dataset pri_zp/Z1/Z99-future to pri_zp/Z1, and resuming recursive replication to sec_zp/Z1

I have set up and replicated the OpenZFS dataset pri_zp/Z1 (with pri_zp/Z1/Z00-initial) to sec_zp/Z1 using a zfs send -R. But then (months later) when I try to create (and replicate) a newer data set, ...
NevilleDNZ's user avatar
1 vote
0 answers
38 views

I bricked my LUKS partition, how do I recover it?

I bricked my LUKS partition, I want to recover my partition or files How I bricked my partiton: I was resizing my btrfs LUKS2 main partition from a live boot environment, it was taking very long so i ...
user626125's user avatar
2 votes
1 answer
45 views

How to Remove a Large File from ZFS Snapshots and Reclaim Space?

I have a series of daily ZFS 100Mb snapshots of archive_zp/my_zfs, going back 100 days. At day 60 (between @ss59%ss60) I had added a 10 GiB sized archive_zp/my_zfs/BIG.iso file, that 10 GiB now ...
NevilleDNZ's user avatar
0 votes
1 answer
10 views

Slowness/Transfer rate going up and down on external 5TB Seagate hard drive via Samba?

My setup is the following: I have an old laptop with 4GB RAM connected to LAN The laptop runs Ubuntu 22.04 Server and functions as my home/media server The laptop has a 5TB Seagate Expansion drive ...
ividyon's user avatar
  • 101
0 votes
0 answers
29 views

Understanding nvme over fabrics configuration and its persistence

I'm experimenting with understanding the NVMe protocol and for that creating a local NVMe over fabrics setup using a Linux VM, two VMs actually. These VMs are on the same network. One of these VMs act ...
Skegg's user avatar
  • 121
0 votes
0 answers
23 views

Nas storage temporary file errors

We have a NAS storage used for file sharing linux+windows. This is old server, but it supports Samba dialect of 3.0 and we use it. This is the relevant line in /etc/fstsb: //nas1/Work /nas1/Work cifs ...
Alon Lanyado's user avatar
0 votes
0 answers
10 views

Can I inspect the VMware VMDK properties of disks used by a Linux guest from within that guest?

We operate Linux VMs hosted on a VMWare ESX cluster. We may provide several disks (VMDKs) to a VM, of different storage types: fast and expensive (SSD) vs. slower and cheaper (HDD). Is there any way ...
reinierpost's user avatar
0 votes
1 answer
126 views

io_uring with `fio` fails on Rocky 9.3 w/kernel 5.14.0-362.18.1.el9_3.x86_64

I've tried various variations of the command: fio --name=test --ioengine=io_uring --iodepth=64 --rw=rw --bs=4k --direct=1 --size=2G --numjobs=24 --filename=/dev/sdc lower queue depth direct set to 1/...
Grant Curell's user avatar
4 votes
2 answers
352 views

How much space do I need to create a symlink?

I have a server which contains 1 TB of space. I filled it to capacity; then I wanted to make a symlink. I removed a different symlink, but the server still wasn't happy - it said I didn't have any ...
Yehuda's user avatar
  • 301
1 vote
3 answers
75 views

How can I view only non-storage devices using lsusb, lsblk, or similar?

I'd like to see a list of connected USB Devices (eg. Usb Mouse, USB Keyboard) without having to go through a list of devices that includes internal and external storage devices (eg. internal HDD, USB ...
Lee's user avatar
  • 97
-3 votes
1 answer
51 views

what is storage virtualization in contrast to? [closed]

i'm reading up on storage virtualization https://en.wikipedia.org/wiki/Storage_virtualization and i'm trying to understand what this is in contrast to, or a solution to, or why it exists at all? some ...
How To Linux's user avatar
0 votes
1 answer
27 views

How does Lustre decide how much of a file to restore to front-end storage when a program reads a file?

I read about the Lustre file system: With huge files, it’s unusual for the entire file to be restored to frontend storage How does Lustre decide how much of a file to restore to front-end storage ...
Franck Dernoncourt's user avatar
0 votes
1 answer
481 views

If I have a json string how do I calculate the number of bytes needed when stored?

I have a json string formatted displayed in a web page. What I am trying to understand is what is the size in terms of bytes that this json string requires. If I copy and pipe to wc -c I get 1000 ...
Jim's user avatar
  • 1,421
0 votes
1 answer
60 views

How are block devices physically addressed in a file system

In this book, the following is mentioned about filesystem addressing: A file system does not need to concern itself with where on the physical media a block should be put, that is the job of the ...
user1234234's user avatar
-1 votes
1 answer
44 views

How are data organized when written in the Micro SD cards? [closed]

How are data organized when written in the Micro SD cards as there are no mechanical spinning platters like hard disks?
ordinary_guy's user avatar

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