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Questions tagged [storage]

The tag has no usage guidance, but it has a tag wiki.

0
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0answers
9 views

ICH10: Large disk support?

I have a Fujitsu RX200 S5 server with an Intel ICH10 82801JI SATA controller that I'd like to use. However, I'm unable to find conclusive information about support for disks with 2 TByte and more. Are ...
0
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0answers
32 views

How to append a new disk to an existing folder

I have a server with a program which rapidly writes data to a folder. I attached a new disk to the server, mounted it and now I want it to expand or replace the folder with data. The program works ...
0
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0answers
25 views

Cheapest solution for mass (and slow) storage on a Linux-like system? [closed]

I would like find the cheapest solution for a data retrieval system, which could be cheapest per TB. And the system is OK to be very slow. Basically, I want to connect as many hard drives (TeraBytes) ...
0
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1answer
31 views

How to delete centos update files that have been downloaded but not installed on a VM?

I have a centos 7 VM in VirtualBox that I'm using for development on an OSS project. I'm not worried about updates to the VM, but the VM has downloaded pending (important) updates and has now grown to ...
1
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0answers
21 views

How to back up two ZFS pools to a backup pool with regular snapshots and incremental send/recv

I'm running ZFS on my home studio machine. I have two pools: ssdtank - holding the operating system datasets, swap zvol etc. hddtank - holding user data I have a backup USB HDD that I want to use ...
1
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1answer
35 views

How to format a rogue flash drive? (GParted tries to touch file system footer beyond actual capacity, and freezes up indefinitely) [closed]

On a limbo-type fake USB or SD card, all sectors starting from a specific position on the drive are unavailable (zeroes only or ones only or unreadable sector response). A flash drive might indicate ...
0
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1answer
13 views

Unreadable block in multiblock reading on dd / ddrescue: How does it handle it?

Let's say that I set the block size of dd or ddrescue to 256K. A sector of flash drives usually has 512 bytes, a sector on optical data discs has 2048 bytes. Let's assume that in the next 256 KB, ...
-1
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1answer
22 views

Are there any pitfalls to having a file-system directly on the hard disk with no partitions? [duplicate]

In Linux it's possible to format a non-system hard disk directly, without first putting any partitions on it. I've formatted a raw hard disk using mke2fs, creating an ext4 volume /dev/sda, rather ...
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2answers
29 views

ZFS magically vanishing available storage space

Running zfs on a system, and my root partition has been shrinking with seeming no explanation. I have now run out of space and can't find where it all went. A simple df shows the following (You can ...
2
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0answers
22 views

remote machine/cloud application storage for running software [closed]

I don't have a large SSD disk and every now and then I want to run a VM and I run out of storage, I want to run a nodejs project that for some reason needs an insane amount of storage for npm modules, ...
2
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2answers
47 views

List HBA information on Solaris 11 OS

Actually I want to know how can I see the Luns presented using a HBA WWN. The view that I want is something like this: LUN (on the server side like /dev/rdsk/...) | WWN (from the server) | Paths (...
-2
votes
1answer
28 views

What is the relation between a line in cpu cache and a page in main memory (and block in disk)?

Computer Systems: A Programmer's Perspective (2nd Edition) [Randal E. Bryant, David R. O'Hallaron] says A block is a fixed-sized packet of information that moves back and forth between a cache and ...
0
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0answers
37 views

What is the “~/.stack” directory?

My "~/.stack" directory is taking up 2.5GB and has the following main big directories : 1330 programs/ 877 indices/ 264 snapshots/ What is this "~/.stack" directory ? Can I safely remove ...
0
votes
1answer
48 views

Is it possible to create raid-0 without losing data?

My linux root OS device is /dev/sda, and my external hard drive is /dev/sdb (empty drive) I don't want to loss data on /dev/sda, and setup raid level 0. Is this possible?
2
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1answer
40 views

Mirror Linux disk writes to secondary disk [duplicate]

I would like to set up a Linux system to use one primary storage device, but copy all writes to that device to another secondary device without blocking for every write - e.g. an NVMe SSD as primary ...
1
vote
3answers
36 views

Get system to use another drive as /home after installation

I recently got a new laptop and have installed Ubuntu 18.04 on it. However, I have an issue: I do not have a lot of storage space. I want to add an new, larger internal drive to my laptop and use ...
1
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0answers
25 views

multipath equivalent that doesn't require root privilege

Is there any native tool that can show multipath topology but doesn't need root privileges? Basically the same output as multipath -ll
0
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1answer
30 views

Name this feature - automatically move block from a disk type to another?

I am not talking about cache. The main issue for me with cache is at the beginning the first block is searched through the slow disk, then put in cache. I want often read blocks to be definitively on ...
1
vote
1answer
58 views

How can I get my photos off of an old cell phone in Linux?

I have an old, non-Android flip phone (Samsung SPH-M400) from about 2012, and I would like to get the photos off of it. The phone is fully functional, but its service is deactivated. I have tried ...
0
votes
1answer
20 views

Report directories with contents that exist elsewhere even if scattered

This is not a "how do I deduplicate files" question. This also isn't a "how do I find duplicate directories" question. Those questions have been asked and solidly answered dozens of times on various ...
0
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2answers
56 views

Rebuilding mdadm RAID 5 array with multiple failed drives

I had a 5 drive Raid5 array and I've had two drives fail. I have fresh drives to swap out, but when I'm trying to start it it complains '/dev/md/0 assembled from 3 drives - not enough to start the ...
1
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0answers
23 views

Recover Linux mounted SAN storage formatted accidentally? [closed]

I have a scenario where I am using SAN storage for my current environment data storage. I have installed some oracle products and used SAN storage for storing the product data viz. database ...
6
votes
1answer
187 views

Volume Management: How to move space from one partition to another?

I am setting up a redhat ec2 instance and by default the software I am using (called qradar) created the following volumes on the two 500g ebs storage devices attached to the instance: $ lvs LV ...
0
votes
1answer
85 views

Multipathd config for LSI HBA 3008

I have 5 jbod attached via LSI-SAS3008 to controller. I'm using Arch-Linux 4.14.41-1-lts & multipath-tools v0.7.6 (03/10,2018) My problem is when a disk starts to give I/O error and starts to ...
1
vote
2answers
226 views

Mount Oculus Go's internal storage under Linux?

When connected to my Linux machine, dmesg shows the USB device without identifying or providing a device path in /dev. What steps are necessary to mount Oculus Go's internal storage under Linux? ...
1
vote
1answer
269 views

Why is fio seq_writes so much faster than dd?

I have a zfs server, where I ran a couple of dumb tests just for understanding, and it puzzles me. Context:- FreeBSD 11.2, ZFS with Compression enabled, SAS HDDs, RAIDz2, 768GB of memory. Both ...
0
votes
1answer
104 views

Mount storage from Fiber Channel SAN on Oracle Linux

I have a scenario where my shared storage is available at SAN (Storage Area Network). The SAN is available through Fiber Channel. I am installing some oracle product and want to use storage from SAN ...
0
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0answers
34 views

hitachi SNM2 CLI issue

I have installed linux ver of HSNM2 on a server. There seems to be a problem reg env variables. I am not able to figure, it looks simple and confusing. root@server:/usr/stonavm$ cat setup_env.sh ...
1
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0answers
25 views

How can I reduce the size of my backintime snapshots?

I'm using backintime to create versioned backups of my root partition, and I would ideally like it to be making these snapshots quite often, daily if possible. However each snapshot at the moment is ...
1
vote
0answers
190 views

Ceph for small files?

Currently I have 6 dedicated servers in a data center. Two Servers are Mailservers running exim and dovecot (Maildir) and 4 Webservers. Each Server has two 3TB HDDs. My current problem is, that we ...
1
vote
1answer
715 views

persistent device naming for NVMe storage devices

The Linux kernel's simple naming for a storage device (e.g. /dev/sda, /dev/sdb) can change randomly across boots. Is that true for NVMe storage devices too? These have names such as /dev/nvme0n1p1 and ...
4
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3answers
147 views

Store a custom serial number on a USB flash drive, immune to overwriting

I'm working with massive amounts of USB flash memory. I'd like to be able to track events regarding the USB drives. Specifically: I perform f3 tests, format the drives and write data to them. I'm ...
0
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0answers
13 views

mpath target must be >= 1.5.0 to have support for 'retain_attached_hw_handler'. This feature will be disabled

I have problems when trying to reload some multipathed devices after updating a linux server. somehow the metadevices changed from /dev/md1 to /dev/md127. then I have this issues: # multipath -v ...
2
votes
1answer
45 views

How to replace a disk mounted to a specific folder without losing the stored data

Disk 1 is mounted to /storage, it is 99% full and I am out of spare connectors. What I want to do is replace Disk 1 with a bigger drive (Disk 2) in a way that the new larger disk will contain the same ...
1
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2answers
823 views

tmpfs usage and resizing

I am trying to understand the stuff. I have a machine with 80G storage. It looks like that: Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 50G 7.1G 43G 15% /...
0
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1answer
31 views

How to concatenate 2 or 3 physical disks to create one larger usable volume in Centos7

I will like to apply the concept of concatenation of multiple physical disks and create one larger disk for my my storage, and I am using Centos7 as the my server. I have 2 types of disks: one is an ...
0
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0answers
22 views

What should I notice for the USB stick use as installer?

I have a few questions about the USB stick used as an installer in Linux. 1) Should I leave extra space after running dd? So for Windows user, you might be familiar with rufus, with rufus you can ...
0
votes
1answer
72 views

Recovering lost information

I installed a LVM storage on my computer and I had very important information inside /HFT. Here is the way I installed that LVM storage: sudo pvcreate /dev/sdb1 /dev/sdc1 sudo vgcreate VG /dev/sdb1 ...
0
votes
1answer
201 views

Moving space from one partition to another? /dev/nvme0n1 -> /dev/xvda1

I ran out of space on "/dev/xvda1" and I want to pull some space from either "tmpfs" or "/dev/nvme0n1" into "/dev/xvda1" % df --print-type Filesystem Type 1K-blocks Used Available Use% ...
1
vote
1answer
342 views

How can I merge two hard drives on an external linux server, without losing data already uploaded to one?

I have a media server running Plex over on Hetzner, but am in no way a server pro. I failed to realise that my two 2.0TB hard drives would be completely separate, so instead of 4.0TB of space in my ...
0
votes
1answer
55 views

My disk is full - have I made a mistake partitioning?

I am a new Linux user, and I installed Ubuntu from scratch yesterday for the first time. I am dual booting Ubuntu and Windows 10, so following these instructions, I partitioned my drive to leave ~...
1
vote
1answer
885 views

using overlay2 on CentOS 7.4

How do I install and enable the overlay2 storage driver on CentOS 7? I have done many google searches on this and I see that version 7.4 is required. So I typed the following commands to confirm ...
0
votes
0answers
213 views

Vdbench, performance difference while specifying file path and partition path

I'm using vdbench for storage benchmarking. I'm running a random reads test. I've attached a test file system from my storage array. In vdbench config file, if I specify my lun as partition, such as /...
0
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0answers
175 views

How to release free space after deleting a virtual machine on Linux KVM?

I've installed a Windows 10 and a Fedora virtual machine on my Redhat linux platform. After I deleted Fedora virtual machine the other day, I've noticed that the disk's free space remained unchanged....
0
votes
1answer
37 views

How to increase lvm root parition

I am running a centos vm inside freenas. The vm disc is currently 20G and needs to be increased to 60G. I increased it in freenas (edit zvol in the gui). Then I used gparted from a live cd to extend ...
0
votes
1answer
48 views

What is best parition format and raid setup for millions of small files? [closed]

If I have millions of small files distributed by folders, what would be the best parition format and what raid setup in order to manage them as fast as possible ? E.g search in all files, find files ...
0
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0answers
43 views

Command to know if file is created

I have a disk of 2TB and looking for command to know when, where, current size and by whom this file was created. Linux commands like 'Find' or 'ls' is working but these commands are slow for storage ...
0
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0answers
31 views

Doveadm is unable to lock files before moving them to alternative storage

I have been fighting with this for past 2 weeks and now I am desperate. On my server is doveacot and postfix. I have configured dovecot to use alternative storage on nfs share. Everything worked just ...
1
vote
1answer
84 views

How do I enlarge /home and /swap partitions on GNU/Linux?

Well, I've gotten myself into a sticky situation. I've just upgraded my laptop's RAM from 8 GB to 16 GB. Now, I know that Linux swap partition serves as a "home" for RAM on most Linux distros, ...
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0answers
28 views

Which gui for Veritas infoscale/storage?

I tried this product on linux, is called infoscale and is the old Veritas storage foundation renamed. I use old version of "Veritas storage": the 5.x and 6.x on some unix server. I remind some gui ...