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Questions tagged [storage]

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

1
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1answer
20 views

How to fix my storage drive to make it writable?

My computer has two drives, a boot drive and a storage drive and I'm running Ubuntu 18.04. However, for some reason my storage drive is unusable. $ ls '$RECYCLE.BIN' _SMSTaskSequence 'System ...
1
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2answers
60 views

Low disk space on “Filesystem root” 0 bytes disk remaining

I am struggling against disk space, regarding root location. Seems like I have reach 100% usage, and cannot find a way to regain space. I have used apg-get autoremove, apt-get clean, removed old ...
3
votes
2answers
105 views

Replicating an SD card

BACKGROUND An SD card has been configured for a Raspberry pi. The goal is to replicate the SD card exactly (OS, apps, data) so that the replica will function in a rPi exactly like the original \ ...
0
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1answer
32 views

How to fix or retrieve data from an NTFS partition that was (re-)formatted with gnome-disk?

This morning, as usual, I mounted a 622 GB Windows (NTFS) partition on Linux for use. When I went on to unmount it through the graphical disks tool on GNOME, I accidentally formatted it, and now it’s ...
0
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0answers
27 views

How much space does it require to install php, mysql and phpmyadmin on CentOS 7? [duplicate]

I use ovh.com self managed VPS. The plan name is 'VPS 2018 SSD 1'. It offers 2 GB RAM and 20 GB disk space. I have only php 5.5 installed. When I try to install phpmyadmin, it throws an error saying '...
0
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0answers
26 views

Unable to mount from the newly added second interface of a Ubuntu NFS server

I have a Ubuntu NFS server with single interface (just one IP address i.e 192.168.1.13) configured for both network and storage traffic. To avoid performance issues, I have got the second interface ...
0
votes
1answer
17 views

How machines agree on whether to use big or small endians?

I know how endians work. I read somewhere a statement "the internet, for instance, agrees on everything being big endians". How does that work? If I have a tcp connection between 2 machines, how do ...
0
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2answers
39 views

Find out which users are hogging the most disk space on our data server

We are supposed to store our ongoing projects on a rather small (~4TB) data server. Not surprisingly, it is constantly overflowing and people need to move off less recent files manually. Is there an ...
2
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0answers
24 views

Are released blocks logged in the journal for ext4?

Suppose we have a simple case: ext4 file system with journaling a single file named file, which has no other hard links the inode for file has associated with it only 1 data block My understanding ...
1
vote
1answer
22 views

Is it wrong to fill the reserved space in an external USB drive for archiving purposes?

I have been filling a hard drive and a couple of backup drives with the family pictures and videos. Once a video goes into the archive, it remains there in a folder correctly labeled with the date. ...
4
votes
1answer
226 views

ZFS on Linux: cannot destroy snapshot, dataset is busy

I'm trying to delete a bunch of old ZFS snapshots but I get errors saying that the datasets are busy: [root@pool-01 ~]# zfs list -t snapshot -o name -S creation | grep ^pool/nfs/public/mydir | xargs -...
-1
votes
1answer
131 views

Hard drive - not seen by fdisk, not mounted but detected

I had hard drive which was target location for CCTV, connected to linux mini pc running rsync in background to collect footage from few locations. Well, I noticed that sometimes rsync failed due ...
2
votes
2answers
108 views

Fedora 29 — 500gb Hard Drive only storing 52.6gb

I have two hard drives on my laptop. One has 1tb with windows 10 and the other is 500gb (which I took from an old laptop) with fedora 29. When I went into the disk usage analyzer (DUA) on Fedora 29 I ...
0
votes
2answers
115 views

How to check that which storage connected either FC or iscsi

How do i check that, which type of storage are connected with my linux(Redhat) system. I want to find that either ISCSI or FC storage connect ?
0
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2answers
307 views

Unable to mount LV: “mount(2) system call failed: Structure needs cleaning,” but e2fsck says clean

I was trying to install an old optical drive into my system, which turned out to be having problems, so I pulled it out again, but upon rebooting back into Ubuntu 18.04, I'm unable to mount my 3-drive ...
1
vote
1answer
61 views

Can I use a Linux boot stick to check a windows system? [closed]

I have tried casper-rw and ext2. The following questions are where I'm at: Can I use a Linux boot stick to check the desktop windows partition for viruses and/or rootkits? If not, why? How is a ...
0
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0answers
18 views

problem installing curl [duplicate]

I am currently running kali linux(light, 64 bit) on a multiboot usb using YUMI and i'm trying to install curl but it needs additional storage, what should you suggest?
11
votes
5answers
1k views

Check data integrity after copying thousands of files [duplicate]

I copied thousands of files into an exFAT MicroSD card. The number of files and bytes is identical, but how do I know whether the data is corrupt or not? It would be good if the JackPal Android ...
0
votes
0answers
17 views

df -h inaccurate output [duplicate]

when I hit the command dh -h in my shell I'm confused why I get an inaccurate answer for / which is 29G. by inaccurate I mean the summation of avail which is 8G and Used which is 20G is 28G but the ...
1
vote
2answers
48 views

50GB /dev/sdb is filled with more than 250GB of files?

I migrated my vmware vcenter(26GB) over NFS on to /dev/sdb(50GB). [root@centos7~]# df -hT /dev/sdb Filesystem Type Size Used Avail Use% Mounted on /dev/sdb ext4 50G 26G 21G 56% /...
1
vote
1answer
187 views

PVS output not showing drive

I had created physical volume earlier i.e. /backup, /ndasdb, /processor, /latro. Don't know what exactly happened, but /ndasdb is not showing in any of this output result: Pvdisplay, Vgdisplay, and ...
0
votes
1answer
142 views

Oracle Linux 7 mounting SAN storage issue

I have a scenario where I am trying to mount SAN storage to my linux machine. My environment details are- Oracle VM manager for VM creation Fiber Channel HP3PAR SAN storage attached as physical disk ...
0
votes
1answer
20 views

Can I redirect block storage devices to each other?

Obviously what I'm about to describe is better handled by rsync or cp, but... Say I have two drives on my computer. Could I make one a perfect image of the other with the following command? Would ...
0
votes
0answers
13 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 ...
1
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0answers
57 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
votes
1answer
49 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
109 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
vote
1answer
78 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
votes
1answer
33 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
votes
1answer
37 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 ...
0
votes
2answers
55 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
votes
0answers
24 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
votes
2answers
169 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
33 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 ...
1
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0answers
117 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
347 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
votes
1answer
49 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
41 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
42 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
votes
1answer
36 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 ...
2
votes
1answer
66 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
30 views

Report directories with contents that exist elsewhere even if scattered

I want to generate a report of directories that I know I can safely delete (even if requiring a quick manual verification), because I know that the full contents all the way down, exist elsewhere--...
0
votes
2answers
158 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
33 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 ...
7
votes
1answer
577 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
171 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
698 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? ...
2
votes
1answer
690 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
220 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
votes
0answers
56 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 ...