Questions tagged [lsblk]
The lsblk tag has no usage guidance.
99
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3
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bash + how to compare arg to one of the disks in linux machine
I can capture the disk devices of my Linux machine with the following command:
lsblk -lnb | numfmt --to=iec --field=4 | grep disk | awk '{print $1}'
sda
sdb
sdc
sdd
In my bash script I used the line ...
- 11k
5
votes
2
answers
653
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How do I tell which partition I booted from?
Is there a way to know which partition you actually booted from?
fdisk -l reveals a "Boot" column that I definitely don't have on my NVME. Is this just legacy information?
Device Boot ...
- 53
0
votes
0
answers
19
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How does it possible two hardware RAIDs in lsblk but one - in lspci?
lspci output:
Slot: 02:00.0
Class: RAID bus controller
Vendor: LSI Logic / Symbios Logic
Device: MegaRAID SAS 2208 [Thunderbolt]
SVendor: Dell
SDevice: PERC H710P Mini (for ...
0
votes
1
answer
19
views
RHEL 7.9 Help: Why do I get differences between lsblk and df
I have resized recently the rhel-root partition of my RHEL 7.9 system, basically I did the following commands:
pvresize /dev/sda2
lvextend -l+100%FREE /dev/rhel/root
I was able to resize the ...
0
votes
0
answers
20
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How to get path of hardware RAID array in lsblk?
I detect list of hardware arrays by next command:
lspci -vmm | sed -E -n '/RAID bus|SCSI controller/,/^ *$/p' | tr -d '\t'
Example:
Class:RAID bus controller
Vendor:Broadcom / LSI
Device:MegaRAID SAS ...
0
votes
1
answer
372
views
How to update/refresh changed partlabels as reported by lsblk?
On Linux, the command lsblk -o partlabel will display the partlabel for block devices.
I have used gdisk to change a partlabel.
After the change, lsblk is still reporting the old value of the ...
- 1,226
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0
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29
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Size discrepancy between df -h output and lsblk output [duplicate]
When I run df -h and lsblk, on my Ubuntu 20.04.3 LTS Oracle Cloud instance, there is a discrepancy between sizes of my /dev/sda1 mount. I am not sure if this has to do with GiB vs GB or something else....
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1
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56
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fdisk prints nothing and devices are not mounted
I am quite new to Linux, and I need to mount some devices, using the lsblk command and more.
lsblk presents the devices (internal, I don't have external ones) the output is:
# lsblk
NAME ...
- 1
1
vote
2
answers
48
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'dd' command disk copy retains old size
I recently upgraded my home server and wanted to increase my cloud disk to 2TB from 600gb. After some research I found the dd command which can fully copy a disk, which in my case seemed like a good ...
- 13
0
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2
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46
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lsblk size not adding up
I am using Ubuntu 20.04. when I do lsblk size is not adding up.
root@UbunutuTemplate-001:/home/tca# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 4K 1 loop /snap/bare/5
...
- 157
-2
votes
1
answer
67
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linux + from lsblk partitions size are greater then disk size
I get the following details from RHEL 7.2 machine , sda DISK is using LVM
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 250G 0 disk
├─sda1 8:1 0 500M 0 part /boot
├─sda2 8:2 0 199.5G 0 part
│...
- 11k
0
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0
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120
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How to access files in USB in linux
I'm using Ubuntu 20.04, recently (almost a week ago) I upgraded my kernel from 5.11.0 to 5.14.0 and after that I can't access any USB drivers.
The system recognises my USBs since when I run lsusb it ...
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0
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57
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Drive not connecting after power outage
I have a raspberry pi with two external hard drives. the electricity went off today and after that i couldn't enter the rpi. what i ended up doing was to remove the flash card and enter it in another ...
- 1,640
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0
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28
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Truncated ext4 partition after trying to access my partition from windows with ext2fs
After trying to access my Linux partition from Windows operating system, my Linux partition is now truncated to a size 1K byte and I am no longer able to mount that partition.
"fdisk" shows ...
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1
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116
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Parse lsblk with jq
I am currently trying to parse the output of lsblk with jq and filters it based on some criteria.
Given the following example output:
{
"blockdevices": [
{
"name":...
- 83
1
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1
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87
views
Can't see mounted drive under lsblk, blkid or mount
I have mounted an external hard drive via /etc/fstab with the following entry:
UUID=a8286fc9-5b08-41d9-8c4e-cb993a8976d1 /home/bu/safe-heaven-2/ ext4 defaults 0
I can read/write from this disk but I ...
3
votes
2
answers
609
views
Does Linux update the size of a block device?
In the light of emmc wearout monitoring I'm wondering about the size as displayed inside a running Linux OS. An emmc chip has an internal manager which keeps track of the usage intensity of all the ...
- 83
1
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1
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320
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external hard drive not showing with fdisk & lsblk
this is output of dmesg
[ 17.064706] usb 2-2: new SuperSpeed USB device number 3 using xhci_hcd
[ 22.496752] usb 2-2: device descriptor read/8, error -110
[ 22.600534] usb 2-2: new SuperSpeed ...
- 11
1
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1
answer
342
views
Where is the udev database stored and what sets the permission?
I'm using Debian. When reading man lsblk I see mention of a udev db:
The lsblk command reads the sysfs filesystem and udev db to gather information. If the udev db is not available or lsblk is ...
- 22.5k
0
votes
2
answers
144
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how to compare the lsblk disk size values to disk size values from df -h
I want to compare the size of the disk between the size from df -h to lsblk
Because we performed resize2fs , and after resize2fs I want to check the size from df -h against the size from lablk
So we ...
- 11k
2
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1
answer
421
views
Meaning of the output from lsblk command
I have recently started using Linux and would love to know how to interpret the output from the lsblk -f command.
More specifically, I would like to know the different partitions and sizes.
For ...
- 23
0
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2
answers
289
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How do i read this raid information output?
Im currently working on a remote ubuntu 18.04 server where i need to set up a new raid array (raid1) and then mount it as an available partition to the active filesystem. The first step for me is to ...
0
votes
0
answers
73
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Can't read or mount MicroSD card (ext4) on Asus X205T (Q4OS)
I have hard time with MicroSD card on Asus X205T. I can see device with lsblk, but it can't be mounted and read, it doesn't read filesystem and stuff.
Distro: Q4OS 32 bit. Filesystem: ext4.
Kernal: ...
- 129
4
votes
1
answer
62
views
Is there a scriptable way to identify the nth partition of a disk?
Suppose I have a disk located at /dev/DISK_NAME. I'm curious if there is a command to find the nth partition of this disk.
It seems like this sort of thing should be possible with lsblk. The best I ...
- 2,525
1
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1
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44
views
UUID Multiple Times in /dev
I have an external hard drive that shows up many times in /dev whenever its connected. Is there any way I can fix this? Or is it a problem with the drive itself?
Output of cat /proc/partitions:
major ...
- 11
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1
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340
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lsblk + file system type not appears from lsblk
we have VM machine with disks as sdb sdc sdd ,,, etc
we create ext4 file system on sdb disk as the following
mkfs.ext4 -j -m 0 /dev/sdb -F
mke2fs 1.42.9 (28-Dec-2013)
Discarding device blocks: done
...
- 11k
0
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0
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28
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unable to figure out who is consuming root disk space
Team,
my system running ubuntu 16 and k8s 1.13.5 is reporting 79% full and i tried several utilities and no avail what is actually consuming it. I tried several options but output of none is summing ...
- 123
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2
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50
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linux + is it possible to identify specific new disk in order to join the new disk to VG
we want to build new bash script that will join one of the new disks to volume group ( VG )
lets say we have linux machine and we add 10 new disks
the target is to do manual "label" on one ...
- 11k
0
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3
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181
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how to create disk label without creation filesystem on new disk
we have rhel 7.2 server , server is VM server
and we add new disk - sde
with the following example we create ext file system with label - disk2
mkfs.ext4 -L disk2 /dev/sde
mke2fs 1.42.9 (28-Dec-2013)
/...
- 11k
1
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1
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297
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Mounting encrypted SD card: where does /dev/dm-3 come from?
I was trying to mount an encrypted SD card on Kubuntu 20.04.
lsblk gives me this:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 ...
- 13
2
votes
1
answer
445
views
lsblk doesn't show size on some partitions
(Ubuntu 20.04)
lsblk -f shows:
NAME FSTYPE LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
---
nvme0n1 ...
- 579
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1
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74
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USB device not being recognised as mass storage
I recently bought an external SSD. My Windows laptop recognises the device just fine, but I can't mount it on my Linux machine.
The output of lsusb | grep SanDisk shows it there:
Bus 002 Device 004: ...
- 111
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1
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434
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lsblk + how to capture the disks that are without filesystem
Dear friends and colleges
we have servers with rhel 7.5 version , and each server include disks with filesystem and disks without filesystem
usually sda - is the OS disk , and sdb is disk that already ...
user436442
0
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0
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363
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How to mount a usb harddisk after a interrupted shred
Shred command was interrupted by a unrelated and user induced system halt.
Now I'm not able to see the harddisk using lsblk -l. Tried on multiple linux systems.
This answer (from External HDD detected,...
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93
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lsblk doesn't show attached virtual storage / partition
I attached a used virtual storage (backup) to a rescue instance because I need the files of the attached storage.
[root@centos-1cpu-1gb-de-fra1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda ...
0
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2
answers
142
views
Multiple Threads Cannot Access the Same RAMdisk Created by modprobe
I have created RAMdisks of 60GB using modprove brd rd_size=62914560 on CentOS 7.5. Checking the results, fdisk -l /dev/ram* shows 16 ram block devices of 60GB size (/dev/ram0, /dev/ram1, ..., /dev/...
0
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0
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207
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Identify if an usb pendrive has been plugged
I want to reliably and thoroughly identify that a usb pendrive has been connected. I'm using a reduced version¹ of Debian Buster packed in a live ISO image running in VirtualBox.
The process of ...
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176
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blkid doesn't doesn't print the device name on CentOS
I am running a container with CentOS:
docker run -it centos bash
I first check for its Label or UUID:
[root@3271c071fe0a /]# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-5.3.0-1032-aws root=LABEL=...
- 281
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694
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How can lsblk and fdisk show different sizes for the same partition?
I am running a virtualbox VM and I can see that the size of /dev/sda2 is being shown differently in the two outputs. Also, in the output of fdisk, /dev/sda2 and /dev/sda5 seem to be overlapping
~$ ...
- 103
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1
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819
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lsblk shows disk partitions but fdisk fails
I recently tried to power up my laptop and received a "Reboot and Select Proper Boot Device" error. This seems to indicate that the firmware is not able to find the boot partition. So, I ...
- 217
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1
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104
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Output of lsblk includes both pipes and back ticks
sda
|-sda1 ntfs Recovery F49E60439E5FFD0C
|-sda2 vfat ...
- 1,364
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1
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472
views
HDD size from df or lsblk?
I've been said to write a program in c++ to get every hdd and partition's total, free and used size. I can use commands to do this. I searched and I understood that there are two ways of getting size,...
- 43
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1
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312
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Command to list partition type codes in deb and rpm distributions for MBR and GPT
Is there any command to list all partition type codes recognizable by currently installed
distribution (In my case Ubuntu 18.04.03 LTS)
I know the following website exists Andries E. Brouwer 1995-2002 ...
- 1
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1
answer
777
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partition size vs file system size
I am writing a c++ program that I need to get partitions and hhd's total, free and used space. I'm so confused with all commands and codes that can be used to get these data from system and all ...
- 43
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1
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92
views
How to umount a USB key while running on tails
I would like to create a live USB from TAILS (on the same USB key as that of running TAILS). A dd from the iso to the device is not tolerated since the key is mounted:
$ lsblk
sdb 8:16 1 7....
0
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1
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571
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How to merge lvm
I don't know what my colleague exactly did but I know that he was trying to increase the size of LVM. For now I can see such an output after executing the command lsblk:
NAME MAJ:MIN RM SIZE ...
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1
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55
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How to increase LVM partition
I'm using RHEL7 and here is my partition:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K 0 disk
sda 8:0 0 100G 0 disk
├─sda1 8:1 0 1G ...
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0
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1
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195
views
How can I show the hierarchy symbols when using “lsblk”
When I run lsblk, I get (example)
sda
|-sda1
| `-rhel-root
|-sda2
`-rhel-home
On another server I get the proper characters displaying the hierarchy.
sda
└─sda1
| └─rhel-root
└─sda2
└─rhel-home
...
- 51
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1
answer
243
views
How is it possible to navigate to a location which doesn't show up through "lsblk"?
I'm on RHEL 7.
lsblk provides the output below.
[root@integrator7 /]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K ...
- 207
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1
answer
387
views
How to output only dev names and types in lsblk?
I intend to get a list of all partitions with their corresponding types but arranged in the proper tree order.
This is what I get with lsblk -o NAME,TYPE -i
sda disk
|-sda1 part
...
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