Questions tagged [raid5]
The raid5 tag has no usage guidance.
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MegaRAID SAS 9260-8I drivers available for 22.04 Server?
I am upgrading my Ubuntu Server with added hard drives. I would like to use my MegaRAID SAS 9260-8I to set up my RAID 5 configurations. I only see outdated information.
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lvchange -ay can't activate an LV: device-mapper: reload ioctl on failed: Input/output error
Running on Ubuntu 22.04.4 with kernel 5.15.0-48-generic (yes, there are updates, that is a different issue.)
The only VG named datavg is active and online.
All of the PV are active and online.
All 11 ...
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Remove disk from raid configuration
When running lsblk I get:
root@Ubuntu-2004-focal-amd64-base /dev # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 32G 0 part
│...
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How does RAID 5 handle unrecoverable sectors on a HDD
I'm going to set up a RAID 5 on 4 hard drives on my ubuntu system. I plan to use ext4 on a logic volume.
Suppose one disk reports an unrecoverable sector. How would RAID 5 handle this? My ...
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When I unplugged one of the four 2.5" SSDs, the RAID 5 made by MADAM disappeared
I create RAID 5 with 4pcs of SSDs using this command
[sudo mdadm --create /dev/md5 --level=5 --raid-device=4 /dev/sda
/dev/sdb /dev/sdc /dev/sdd]
and use
[lsblk]
to see the RAID5, which is 720GB ...
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519
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Improving performance on mdadm RAID5 reshape
I am currently a few days in to what appears to be 13 day reshape of a RAID5 array which consists of 6x12TB SATA NAS drives running on a 12-core server with 64GB of RAM.
I've been reading some posts ...
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78
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Mixed HDD sized using Raid5 and mdadm
I currently have three 4TB HDDs in a raid 5 array using mdadm on Ubuntu 23.04. I only have 2 HDD open slots left. I am thinking about adding two 18TB HDD to my PC. Then combing the three 4 TB ...
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How do I get my original RAID setup running again?
I was trying to upgrade my raid 5 to larger drives. I was following a guide I found at:
https://rabexc.org/posts/mdadm-replace
But I could tell something was wrong before I added the larger drive. ...
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87
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Repair a Ubuntu server installation after power fluctuation
I have an ubuntu server that includes a 256GB SSD as the boot device and 3 6TB SATA HDDs as a mdadm software RAID5 array.
While it was up and running we had an electrical service interruption that ...
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BIOS RST size different than O/S size
I am new to Linux/Ubuntu and am trying to learn.
I have a new PC with 1 SSD (m2) for O/S (Ubuntu 22.04.01 LTS) and 4 HDD (4TB each) for storage. I want to create a raid5 of the four 4TB HDD. ...
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71
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Assembled two arrays with mdadm with same characteristics in the disks but ended up with slightly different sizes
I'm having problems with the size of the arrays created by mdadm.
First of all, some context. I've recently upgraded from ubuntu server 18.04 to 20.04. I'm running several raid5 arrays and a raid10. ...
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143
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Help with mounting mdadm array
I recently lost my NAS and am trying to recover the data in my RAID. The disks are fine, its just the NAS hardware that stopped booting and I can't get any support as its discontinued.
I attached the ...
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Add new disk as sublv to LVM2 raid5 & create rmeta and rimage
When I do a lsblk, I get the following:
sdc 8:32 0 9.1T 0 disk
├─data-data_rmeta_2 253:6 0 4M 0 lvm
│ └─data-data 253:8 0 18.2T ...
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!! Solved !! Why does mdadm --create start recovery
!! Solved !!
Hi there i'm trying to create a md software RAID5.
First some info
Distributor ID: Ubuntu
Description: Ubuntu 20.10
Release: 20.10
Codename: groovy
mdadm - v4.1 - 2018-10-01
The ...
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1
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Recognize and use Hardware RAID 5
Should I abandon this setup altogether and just use software RAID?
I am running 20.04 LTS on a SSD and have 3 1TB drives setup with a RAID 5 array through Asus/AMD RAIDXpert.
I can see all the drives ...
