Questions tagged [software-raid]
Questions which refer to software RAID implementations.
517 questions
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None zero mismatch_cnt count mdadm
I have a RAID6 MDADM raid, where is stumbled across, the "mismacth count" /sys/block/md128/md/mismatch_cnt. How bad is a none zero value there?
[root@homeserver ~]# cat /proc/mdstat
...
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61
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MDADM reshaping process over 20 days
I’m growing an existing Linux mdadm RAID-5 array from 4 to 5 disks and the reshape speed is extremely slow (~1-3 MB/s), with an estimated completion time of ~20–30 days. I’m trying to understand ...
- 111
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Saving partition + RAID config to text file (Synology)
I am trying to migrate a Synology Diskstation partitioned harddisk to a larger one (4 TB -> 12 TB). My first attempt to just plug the disks into another Linux computer and dd from the old hard disk ...
- 101
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536
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How to transition an existing Linux installation (Ubuntu) to RAID-1?
I have a Linux system on a computer with two identical drives, and I want the drives to be RAID-1 mirrors. I installed Ubuntu Linux, and the installer did not give any option to set up sophisticated ...
- 413
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2
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Is it possible to put the Linux OS on a RAID array?
I have 6 SSDs (4 NVMe and 2 SATA) and wanted to create 3 Raid 1 arrays. My goal was to install Ubuntu Server 24.04.2 LTS on a single drive and then add it into an array but I have not been able to ...
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340
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Can I convert a RAID mirror into a RAID Z1 later on?
I currently own 2 drives, which are unassigned in TrueNAS. I want to add one more later, but I need to use that storage now.
Is there a way I can create a RAID mirror now and convert it to RAID Z1 ...
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75
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Cannot rebuild RAID5 after failed disk replaced
My QNAP had 4 disks. The QNAP died and took one of the drives with it. I have moved the three other drives and a new replacement drive to a new system. I am attempting to assemble the RAID5 and add ...
- 101
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558
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How should I combine SSDs?
I have a new system with two 1TB SSDs.
I plan(ned) to combine them using LVM into one large 2TB logical volume for /swap and /.
(putting /home on a RAID1 pair of HDs).
However, in Comparison and ...
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263
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Unsure how to handle this RAID setup - Debian 12
I setup a new server on Hetzner.
During setup I had setup RAID 1 on the 2 NVMe Drives and had chosen to ignore the SSD disk.
I am reading this
When I do the following it does not "look like" ...
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What happens when you rename a Snapraid parity drive?
Concerning the following /etc/snapraid.conf configuration:
parity /mnt/parity1/snapraid.parity
2-parity /mnt/parity2/snapraid.2-parity
z-parity /mnt/parity3/snapraid.3-parity
What happens when you ...
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244
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Would it be ok/useful to mirror a SATA HD or SSD with an nvme SSD?
I have a laptop with a 2TB SATA SSD which also has an M.2 NVME slot with currently a 128GB SSD inside. I wondered if it would help to put a 2TB SSD in the NVME slot and mirror both ? The reasoning ...
- 253
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225
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self healing btrfs on top of mdadm raid6
Some sources say that btrfs can self heal when used on top of a mdadm RAID 1, 5 or 6. Is that correct?
This is how it suppose to work:
btrfs detects the bit flip with he help of the checksum when ...
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"There is not enough usable space for this operation" when adding mirror to volume in Windows Server
I'm trying to mirror Windows volume between two disks, but it won't let me convert disks to dynamic until I delete Recovery partition.
DISKPART> list disk
Disk ### Status Size Free ...
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146
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RAID 5 failure after multiple drives got disconnected
I've been running a linux software RAID 5 undergoing a reshape(4→6 devices) and multiple drives got disconnected unexpectedly. The drives themselves are perfectly fine but the RAID array is in a state ...
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RAID0 Superblock Lost, but Data (Assumed) Intact; How to Recover?
My computer's Intel RST RAID0 has always been a bit unreliable and would often have trouble booting (first two attempts would fail, third one would succeed), but recently I accidentally touched the ...
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