Questions tagged [software-raid]
RAID solution handled by the operating system.
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Migrating server and backup server to bigger RAID 1 (software) arrays
I have 2 boxes. The server (actually an ownCloud server) and a backup server. Both are running Ubuntu servers.
The main server has a RAID 1 array of 2x2TB drives.
The backup server has a RAID 1 ...
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Many drives in two RAID6 arrays simultaneously failed, seem to be working after reboot except SMART long test
in my storage server, I operate three RAID6 Linux software arrays. Everything was working fine until it was not.
There are two RAID6 arrays and one RAID5 array, all consisting of SATA drives, all ...
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Restore 4-Drive RAID5 array after accidentally reinitializing last 2-Drive as RAID0
I have an Asustor NAS with RAID 5 4-Drive running, after system update it reboot into the initialize page in web console, I think it's part of the upgrade process so I started the initialize progress, ...
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RAID1 M.2 SSD (2 Drives) | 1 Failed, I removed and Replaced with a new one, but its state stays "removed"
I have a Ubuntu Server RAID1 M.2 SSD (2 Drives) where 1 Failed, I removed and Replaced with a new one, but its state stays "removed".
I am new to RAID Stuff, Below are my RAID Details:
cat /...
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OS doesn't recognize harddisk at inital startup but after reboot
I have a Debian 11 server with 4 HDD. Two of them are in a Raid 1 array.
When I shutdown the server completely and then turn it on again, the boot routine stops because it cannot find the Raid 1 ...
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How to delete Software RAID1 partition?
I have Debian 11 server with software RAID 1 without lvm:
root@debian-base ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme1n1 259:0 0 3.5T 0 disk
├─nvme1n1p1 259:1 0 4G ...
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Best way to clone a single disk from a Software RAID1 Array in Linux server
How can I clone a single HDD bootable disk from a Software RAID1 Array in Linux server? It is currently a two-disk HDD mirror array. I have physical access to the server, and it has empty bays for ...
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RAID patrol write to force sector remap/rewrite?
So I have a HPE S100i SR Gen10 software RAID 1 device that hosts 2 SATA SSD's for a Windows boot partion. The HPE Storage Array management software looks like it found a problem on the SSD's during a ...
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Disk pair not usable after moving from hardware RAID (Windows) to software RAID (Linux)
A long time ago I created a RAID1 pair from the boot menu of a JMicron JMB363 card. All was working fine under Windows and the RAID1 array was recognized as a single disk. I don't remember exactly how ...
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Is Software RAID1 faster on a larger SSD?
I am evaluating 2 CentOS servers, in terms of performance of reading and writing to the database. The database sits on an SSD RAID1 pair, with MySQL 5.7 on each server. Server 2's specs are a bit ...
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mdadm RAID1 degraded but shows active partition on non-present drive
I ran into an issue with a degraded mdadm RAID1 array on a server I inherited:
The server has two identical M.2 SSD drives with 256GB capacity each in a RAID1 config via mdadm for the operating system ...
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Erratic SMART readings on one member of a RAID 1 array
I am managing a server that uses 2 nvme ssds on RAID 1 connectivity.
At once point I lost access to one of the 2 and got my normal raid array degraded mails from mdadm.
So I asked from the hosting ...
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mdadm RAID5 mismatch, which file(s) on ext4 filesystem are affected?
After a scrub of my 4-disk RAID5 mdadm array I got these log entries:
Dec 03 07:20:53 srv10 kernel: md1: mismatch sector in range 204340608-204340616
Dec 03 07:20:53 srv10 kernel: md1: mismatch sector ...
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How to have a RAID1 accessible from both Ubuntu and Windows?
This topic has been discussed many times, but i didn't find anything specific to my situation.
I would like to create a RAID1 with 2 sata drives (same brand, model,capacity). My objective is to have ...
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Insufficient suitable allocatable extents error when performing RAID takeover
To improve performance while still keeping redundancy, I am trying to convert the root file system of a NAS from a RAID 5 logical volume to a RAID 10 logical volume, while keeping the same number of ...
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Removed failed disk from
I have a problem with a software raid running mirror. One disk is dead and the server cannot find it. Normally I would have removed it as well.
mdadm --manage /dev/md0 --remove /dev/sda1
But after it ...
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Growing a RAID-10 on Synology NAS?
I was hoping to add two additional disks to my Synology NAS. Currently it is configured as a four disk RAID-10, no SHR, BTRFS, single volume system. Unfortunately extending a RAID-10 is not possible ...
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Shrink one of the disks in a multi device BTRFS filesystem
My root partition is running out of space and I have no other SATA slots. I have a BTRFS raid0 and I would like to shrink one of the partitions I used for the BTRFS-raid0 and add it to the root ...
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Slow read speed in ZFS mirror (slower than write speed, and very slow for small chunk sizes)
I have a server running debian on top of a ZFS 3-way mirror of Exos X18 18TB (ST18000NM001J).
I'm benchmarking it and I'm finding some surprises for the read rate under certain conditions.
But first, ...
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MDADM Nvme raid Slower than traditional HDD, need enlightenment
I have setup server about 20 days ago with new nvme, before setup raid mdadm the two Nvme samsung 980 pro 1TB i test bench have IO speed average 1.5G/s each nvme, but after creating raid 1, IO nvme ...
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How to convert mdadm raid1 to single driver and keep the data?
I have a raid1 created by mdadm in the root partition on /dev/nvme1n1p2 and /dev/nvme0n1p2, efi boot partition is on /dev/nvme1n1p1. Then I followed some commands to remove one of the disks and ...
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DegradedArray event after removing raid with mdadm
My new server (ubuntu22) from hetzner has 2 ssds and and an additional big hdd that is intended to be used for back-ups only. Initially 3 raids were preinstalled, and the biggest part of an hdd was ...
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Unable to Install Linux Mint on RAID
Second week now than I'm trying to setup Linux Mint on software RAID5 without success.
I'm able to setup the software RAID5 on the live CD with three 240GB SSD, then the installation setup fails to ...
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Creating a RAID 1 via mdadm ends with completely filled one of drives after sync
I have a server with 2x 1TB NVMe drives and I want them to work in software RAID 1 (mdadm) as a system drive.
After creating and waiting for sync of the array I'm ending with one of the drives in ...
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mdadm automatically fail disk when bad sectors reach threshold
I'm currently running Ubuntu 22.04 with raid1.
Is there a way to configure mdadm to automatically fail disks with over 50 bad blocks but only when there is a spare present?
Ideally, I would like for ...
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Can RAID be accidentally configured twice?
I am renting a server from Hetzner, which had 2x 8TB disks. I believe they were listed as RAID 1 (though can't find anything to confirm that anymore), which I would have assumed would have given me 16 ...
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RAID validation fails during Ubuntu Server 22.04 installation
I've followed this tutorial to set up RAID 1 during the installation of Ubuntu Server 22.04.
During the installation, it always fails with a RAID validation error.
(I also tried with Ubuntu 20.04).
...
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Removing removed disk from Raid-1 in MDADM
I have a server where 2 disks were in Raid-1. Disk-1 went faulty and due to some reasons I had to take reboot of the server and below is the current status after that. Now, I am unable to remove the ...
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LVM: How to remove the extra segment created when converting RAID1 to RAID5?
I had two 1T HDD and a 500GB RAID1 LVM LV across them. Then I added another 2T HDD, and converted the LV to RAID5 using
pvcreate /dev/sdd
vgextend ubuntu-vg /dev/sdd
lvconvert --type raid5 --stripes 2 ...
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Weekly RAID check affecting my system - any way to mitigate?
I recently got my webhost (Hetzner) to add a paid of 16TB SATA drives to my webserver. Currently using 2.5TB of them. They're RAID 1 mirrored.
I also have two 4TB nVME drives with 700GB currently on ...
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Are affordable hardware raids with BBU still worth it?
We have done a lot of research and got conflicting answers from experts. What is your opinion on the following?
14 x 16 TB HDDs (Raid 10 -> 100 TB usable)
HW: SGL 8405 + AEC-82885T + BBU (...
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Software RAID Options Combining Internal SATA & External USB?
BACKGROUND
I currently use a hybrid server-workstation setup for my primary workstation. Basically, just a Fedora base running Linux KVM, on which I then containerize a couple Linux flavors & a ...
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Synology SHR Volume - Migrate from 3 disks (RAID5-ish) volume into 2 new disks (RAID1-ish)
What I have:
3 x 6TB SHR Volume with 12 TB redundant storage (1 disk recently broken)
What I want:
2 x 18TB SHR volume with 18 TB redundant storage (I'll expand the volume after the migration)
Of ...
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1
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990
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Soft-raid with Windows Server (Redundancy on OS)
We lease bare-metal servers on OVH. We use Windows Server 2022 as OS on the servers.
OVH offers soft-raid for all of their servers. They do not offer hardware raid.
While it's generally possible to do ...
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LVM with uneven proportional "stripe" distribution over 2 disks of different sizes
Is there a way to create a "striped" LV in a VG with 2 disks of different sizes in such a way it utilizes 100% of the available space?
Linear LV would work, but I want to have the load ...
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mdstat mismatch cnt unsynchronized blocks
Both of our servers suffer from
mdstat mismatch cnt unsynchronized blocks
Every start of the month we got this error and we have to repair the raid using
echo 'repair' >/sys/block/<md id>/md/...
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Boot manager shows two entries but only one partition remains after restore
I had to perform a recovery (using veeam recovery agent) on a windows 2019 server instance.
Before the recovery the system was configured as software raid (mirroring) with two dynamic disks.
After the ...
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recovering lost access to RAID5
I had perfectly working RAID5 and added another device.
I lost power during the RAID recovery. Now I have no access to it - it does not exist - lsblk does no longer recognize it as RAID5 - just ...
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Partition RAID or multiple RAIDs per partitions
I'm trying to setup a RAID 1 with two HDDs. This is what I'm trying to achieve:
data partition (ext4)
Mac TimeMachine backup partition (HFS+)
I want to have RAID over both partitions, but I still ...
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How to partition disks in Debian 10 installer for RAID5 on UEFI machine?
Installing Debian 10. I have 3 disks I want to use as RAID5 on a UEFI machine.
I have tried several configurations that either led to failure to install grub or failure to boot (stuck in grub-rescue ...
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ProLiant DL320e Gen8 v2 cannot see disk on SAS ports, SATA port 5 (for dvd-drive) works fine
First post on this forum, thanks for reading.
Trying to get my server up and running with a RAID0 array on the built in software RAID controller HP Dynamic Smart Array B120i v3.54.
The system does see ...
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Attempting to create an RAID array in Ubuntu server 20.10
I'm attempting to create a RAID 0 RAID array on Ubuntu server 21.10, but I keep getting the following error:
mdadm: An option must be given to set the mode before a second device
Here is the syntax I ...
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Does Linux md-raid store backup metadata anywhere on the disk?
I know that with ext2/3/4 and other filesystems, copies of the superblock are stored throughout the disk in case the primary superblock is corrupted (https://ext4.wiki.kernel.org/index.php/...
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Openmediavault assemble raid6 with mdadm
I have a raid 6 with 1 hot spare. I the initial config was with 5 6TB drives then I added 2 more 6TB drives with the openmediavault web interface. Everything was fine after that. But the last time ...
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Properly Boot a Software-Based RAID1 with a Missing or Improperly Failed Drive
tl;dr. Is there a way to properly boot a software-based RAID1 with a missing or failed drive (that wasn't failed by the user first)?
To be clear, booting a software-based RAID1 without a hard drive ...
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Can RAID 5 be made, when one or more of the disk is actually RAID 0?
I have this question since (I think) 3 years ago, but since I was never actually planning to build server, I just shrug it off. But tonight, I literally can't sleep because of this burning question.
...
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How to configure notification on degraded RAID? [closed]
I am planning a RAID1(mirror) array in a NAS using either a Hardware or Software RAID controller using Linux.
Though I did not find any documentation in which way the system will notify me that the ...
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How can I migrate soft RAID array made by mdadm to new server and new OS?
I have a RAID array which level is raid0 and made by mdadm, in my old server. The member of this array is 6 NVMe SSD, and I create this array with below command:
sudo mdadm -C /dev/md0 -l 0 -n 6 /dev/...
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Raid 5 disk replace Centos6
I have centos 6.6 with a 4 disk raid 5.
One disk is bad.
I removed the bad disk by serial number (it was sdc1).
When i rebooted with a new disk the sd labels changed.
My new disk is now sdb.
Mdadm ...
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RAID10 software raid converted as RAID0
On one of the server, The RAID10 software raid volume had became RAID0 after one the disks in the RAID10 disk group failed. Also the converted RAID0 volume has become inactive.
How can we recover the ...
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