Questions tagged [hard-drive]
Questions about hard disks' performance, issues, tips, and software.
2,462
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How can a folder size be greater than the actual disk capacity on Ubuntu?
So, a little background:
I have a 2TB hard disk that serves as a backup for files (ext4 formated)
The disk was reporting +90% used space, so I bought a 4TB disk
Formated the 4TB to LVM with ext4
My ...
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1
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Certain sensitive PHP files overwritten with garbage. Hard-drive fault? How could this happen? Should I be worried?
I was trying to upgrade a Prestashop store in a local copy in my machine. Running XAMPP under Windows 7. I put that on hold for a while while I browsed some websites with Firefox. When I came back and ...
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Upgrade HDD to SSD - RAID 1
I will upgrade a RAID 1 with 2 HDDs to a RAID 1 with 2 SSDs on a Dell T420 server (PERC H310).
But first I'd like to make some tests with a new OS installation on this new RAID 1 with SSDs.
Can I take ...
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RAID 5/6 rebuild time calculation
I plan to build some storage schema but I have to anticipate downtime, maintenance and rebuild Time.
Some guys said to me that a 10 disk RAID6 of 10To (SATA) rebuild will last for about a week ! ...
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Ansible playbook to format and mount unused disks
I am trying to setup a disk on Linux with Ansible. I am fairly new to ansible.
I have managed to get a list of all unused disks (though it will probably consist of just one) but I am having issues to ...
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Can a faulty cable (or other issue) cause SMART errors with a perfectly good drive?
On a lot of my drives I get WRITE|READ FPDMA QUEUED errors, like so:
Error 23 occurred at disk power-on lifetime: 43915 hours (1829 days + 19 hours)
When the command that caused the error occurred, ...
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Safe and beneficial to enable HD disk cache for disks in RAID, or not?
Dell Perc RAID cards (among others) allow you to set the disk cache policy to be either on (meaning, the individual hard disks use their built-in caches) or off (meaning, the individual disk caches ...
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I gave a 2.2 TB hard disk but only 100GB (sda->sda3->ubuntu--vg-ubuntu--lv) mounted in / [duplicate]
I have ubuntu 22.04 server on my vm in esxi and iam new for this
The size of my current directory(/home/<username>) after login is only 100GB
df -h .
Filesystem Size ...
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dmesg spamming "Power-on or device reset occurred"
So I have a DELL R730xd Server with 24 SSDs on a PERC H730P Mini controller in HBA mode. All 24 drives are in one big ZFS Raid-Z2 pool.
I have noticed that dmesg gets spammed with a lot of these ...
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How can I secure erase a drive using Powershell?
Does Powershell have a built-in way to secure erase a disk? By secure erase, I mean writing random data or all zeros to the entire disk. By disk, I mean the whole physical disk, not individual files, ...
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To improve SQL performance, why not just put lots of RAM rather than having faster hard disks?
People keep telling me that in order to improve an SQL server's performance, buy the fastest hard disks possible with RAID 5, etc.
So I was thinking, instead of spending all the money for RAID&...
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How to unlock an SSD disk with hdparm?
I have an SSD disk with password protection, but the password was lost long time ago... so I tried to erase the ATA security with the hdparm command.
With "hdparm -I", the disk information ...
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How to recover if a disk with OS on dedicated server fails?
Dedicated server on a private cloud that consists of four disks.
One of the disks contains the operating system (OS). If the disk fails, the server will not start, and we cannot extract data from the ...
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Unit for Total_LBAs_Written in SMART data
I have 3 machines with disks (actually, SSDs) in RAID1, purposely with different brands in an attempt to make it improbable to loose them both simultaneously due to wear-out. They are functional.
They ...
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1
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Cannot initialize disk in PowerShell : Initialize-Disk throws "The disk has already been initialized"
I'm trying to change the flash drive's partition style to GPT using PowerShell, but the cmdlet throws "The disk has already been initialized" (even though I've cleaned the drive):
PS C:\WINDOWS\...
CommunityBot
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Win7-10, can you mount an NTFS hard drive and ignore permissions like Win XP?
I have several hard drives that I need to grab data from. All are formatted NTFS, a couple have Win 10 installed, a few have Win7 installed. Under Windows 2000 and XP, I could simply attach the drive ...
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How do data centers deal with constant disk failure?
According to disk reliability report on 2022
https://www.techspot.com/news/97909-ssd-reliability-only-slightly-better-than-hdd-backblaze.html
SSD hard drives have a annualized failure rate of 0.98% , ...
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3
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Getting a RAID controller to surface scan on a sane schedule
The controller I'm presently working with is quite old, the HP Smart Array P400; in part I want to know how to deal with that controller, but I'm also interested in the general perspective -- if there ...
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1
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Cannot set secondary hard drive offline in Disk Management
I need to set a disk as offline in order to connect it to a Hyper V virtual machine.
This disk has Ubuntu installed on it. Windows has absolutely no use for it.
The ubuntu disk is "Disk 1". It has ...
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1
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kafka cluster RAID vs JBOD with new hardware and kafka versions
we want to design production kafka cluster with 7 kafka machines , on RHEL OS
kafka version should be - 2.7
usually we are installing the kafka machine/s disks as RAID 10 ( as confluent recommended )
...
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1
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547
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OSError: [Errno 30] Read-only file system: <relative_path_to_file>
(On Ubuntu 22.04 LTS)
When trying to create or edit any file or directory on my hard drive I get a 'Read-only file system'-error (two days ago I could still do that):
$ whoami
mattia
$ mkdir example
...
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9
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Disk usage per user in Linux / Unix
I need to find out how much disk space is being occupied by each user on the network. I am aware of df and du commands: I could list the entire filesystem and AWK the output, but I wonder if there is ...
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vmstat + on RHEL machine high values of swpd
The swpd field indicates how much swap space has been used; this value increases when the systems physical memory is full and the Linux kernel starts to use the swap partition/file. When the systems ...
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5
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100% disk full on Centos?
Can someone tell me, why is this 100% used on the /?
How can I fix this problem? I'm not a unix admin, I'm a programmer but can read the books.
[root@datasrv /]# df
Filesystem 1K-blocks ...
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1
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Shrink/Reduce disk size on a Linux RAID 1 server
i am looking for a way to clone my HDD to SSD without loosing data or the Linux system itself. The problem is the size of current HDD is 1TB and the SSD we got have 480GB, so i can't clone directly ...
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10
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Reliability of ssd drives
The main advantage of SSD drives is better performance. I am interested in their reliability.
Are SSD drives more reliable then normal hard drives? Some people say they must be because they have no ...
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1
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1
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RHEL + how to prevent OS disk - sda to change after reboot
We installed RHEL 7.9 version on physical machine., when sda device was the OS.
The machine has the following disks.
sda - OS disk
sdb - data disk
sdc - data disk
After reboot OS disk device changed ...
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37
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2
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23k
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What does SMART testing do and how does it work?
man smartctl states (SNIPPED for brevity):
The first category, called "online" testing. The second category of testing is called "offline" testing. Normally, the disk will ...
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Apache Kafka Kraft best practices and what is the preferred disk storage for the meta-data topic
My question concerns the recommended disk storage for the topic __cluster_metadata-0 under controllers in Kraft mode.
we have two options:
Locate the topic __cluster_metadata-0 , on OS volume as /...
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47
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9
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Linux ATA errors: Translating to a device name?
When a Linux box gets an ATA error, it syslogs it with a message identifying the disk as "ata%d.00". How do I translate that to a device name (e.g. /dev/sdb)? I feel like this should be trivial, but I ...
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Debian 11 fails to update grub configuration
I have the following error when I run an update script with ansible:
Generating grub configuration file ...", "Found linux image:
/boot/vmlinuz-5.10.0-26-amd64", "Found initrd ...
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1
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Ceph hardware sizing calculator
I would like to calculate the Hardware sizing for a ceph cluster. There are so few references to the sizing, that I try to get these details here in the community.
E.g. what shall i have depending on
...
CommunityBot
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1
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How do I extend the space of /dev/sda3 on Oracle Linux Server 7.9
Disk capacity is at 105GB, but the root directory (/dev/sda3) capacity is only 39GB, I want to increase the capacity. How can we do this? By the way, the OS is Oracle Linux Server 7.9.
$ df -h
...
CommunityBot
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1
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Error 20580 occurred at disk power-on lifetime
I just put new discs to my server and I want to create raid but during initial rebuild (raid 5) I get disc failure. After that I have problem to check SMART parameter of that disc. After reboot I get ...
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3
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How to 're-balance' data in zfs? (Make sure the data is spread amongst all striped mirrors)
Using a striped mirror (Raid 10) as an example, if two disks are expanded to four, how can the data from the two disks be 're-balanced' (spread out) amongst the two mirrors?
That is, how can the ...
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61
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8
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dd on entire disk, but do not want empty portion
I have a disk, say /dev/sda.
Here is fdisk -l:
Disk /dev/sda: 64.0 GB, 64023257088 bytes
255 heads, 63 sectors/track, 7783 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (...
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1
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MSSQL database slow when move database on other disk
MSSQL Developer Edition, with many database online for test purposes.
To better handle disk space, I moved some databases to another disk. Moved databases perform slower than the original location (...
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4
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Convert full hard drive to LVM without external storage
Recently, my 2TB hard drive ran out of space, so I purchased another one to supplement it. My old drive is mounted in a specific folder (does not have system files or anything). Technically, I could ...
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Reasons for high disk time but minimal IOPS
Can anyone possibly suggest scenarios on a large database system where system stats show a rapidly increasing disk time stats, but next to no actual disk IO? When working with lots of large files, ...
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Can I make md (Linux software RAID) more fault tolerant?
I have a particular hard drive in a RAID 1 mirror that gets failed out under heavy load, typically, when I run a full backup.
There is nothing wrong with the drive. Ok, it is getting one error when ...
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6
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2k
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Is it possible that hard drive temperature reading is inaccurate by a large margin?
I have a 3 - 4 year old 250GB WD hard drive that has shown abnormally high temperature readings ever since I bought it. The temperatures were so much higher than expected that I ended up attributing ...
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1
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Shingled magnetic recording(SMR) device managed - sequential write performance optimizations
recently (2020-05) many HDD producers were caught silently replacing CMR lines with SMR disks, which brought more exposure to the whole concept.
It seems that most device-managed SMR disks first ...
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84
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kafka + what is the meaning of Log directory is offline
our Kafka production cluster include 23 broker machines , and each broker include 35 JBOD disks
broker version is - apache 2.7 version , and cluster include 5 zookeeper servers
from /var/log/kafka/...
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1
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44
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Curious? LVM on a brand new drive?
i wanted to replace a broken zfs-drive on my server and got a "sealed" drive from my storage for that usage, but when i first checked the drive it shows me that there is a LVM on it.
My ...
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2
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1k
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mdadm assemble ignoring --force? Raid10 minimal difference in 'Actions' between Harddisks
My server Is runnIng a 4 dIsk software raId 10 based on mdadm.
EarlIer today a small power outage shut down the server and now It only boots to the InItrd emergency system (ubuntu 16.04), complaInIng ...
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0
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Data restoration of a RAID1 drive from a QNAP NAS
I have a dead QNAP HS-251 NAS enclosure, using two disks in RAID1. The enclosure is dead, but the drives seem fine. I would like to recover the data on it. .
Of course, I have no backup... Stupidly,I ...
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/dev/sda Currently unreadable (pending) sectors alert but smartclt shows everything as 0
I already read the similar questions but mine seems to tell a different story or the answers there don't work for me.
SMART error (CurrentPendingSector) detected on host
Device: /dev/sda [SAT], 1 ...
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4
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3k
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Benchmarking hard disks on Mac OS X SL
On Linux I would usually use "hdparm -tT device" when I want a quick idea of how an hard drive is performing compared to another; having switched to Mac OS X a few months back I have yet to find ...
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2
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806
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Acessing HP Disk Array from Linux
I have some old HP Proliant GL5 with HP P400i array controllers that I want to put to some use.
In a small test I have booted with Archlinux, and it was able to list the array card and network ...
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3
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failed command: WRITE FPDMA QUEUED - cause of server running slow?
A headless Linux NFS fileserver has been running slow for the last couple days (based on subjective reports from users). I checked journalctl did not see any relevant errors.
However, when I ...
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