Questions tagged [raid6]
The raid6 tag has no usage guidance.
29
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resize2fs wont grow an mdadm array (raid6, lvm, ext4)
I've decided to grow my raid6 array:
- from: 7x 2TB drives (giving usable space of ~9TB in ext4/raid6)
- to: 7x 4TB drives (giving usable space of ~18TB in ext4/raid6)
I have replaced all seven ...
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Activate inactive RAID6
Ubuntu 22.04.3 LTS
I have mdadm RAID6 with 4 drives. This is a minimal test configuration before extending it to target 8 drives. RAID was in working state:
cat /proc/mdstat
Personalities : [linear] [...
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Assemble raid6 array from spares only
This question is related to Managing raid6 device with pacemaker, but nothing in the question linked is relevant to this question, except the fact that Pacemaker is involved.
For the purpose of this ...
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Managing raid6 device with pacemaker
I am setting up 4 hosts, each exporting one local storage device over iscsi with target. Every other hosts imports it such that each host has concurrent access to all 4 each storage devices. I built a ...
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Cannot stop md raid6 array
I setup a raid6 array on top of iscsi and lvm shared logical volumes that I use to make sure only one node part of iscsi network can use the raid volume at a time.
Today I fail to stop the volume. ...
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Raid6 mdadm reshape operation interrupted - now cannot mount or examine
Edit: Once the reshape finished the drive became fully accessible again.
I had a power failure while a raid6 array was being reshaped, and now certain operations cannot be run against it, including ...
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435
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Why MDADM removes disk with no errors from array and marks it as failed
I have a Raid6 that keeps automatically marking a disk (/dev/sdi) as Failed and removing it from the array even though the long test does not show any errors:
Test results
sudo smartctl -l selftest /...
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467
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Growing RAID6 (mdadm) including update of stripe-width
I am running Debian Bullseye (OpenMediaVault 6) with backports kernel 6.0.3-1. I have set up a RAID6 array consisting of 4x 6TB Seagate Ironwolf HDDs (4KiB sectors with 512KiB emulation).
When I have ...
- 51
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116
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Recovery of scp overwritten file
I had two 2GB txt files a.txt and b.txt that I wanted to copy to another directory using scp.
However I accidently didn't type the destination directory and typed the following commands
scp *.txt
and ...
- 101
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83
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Semi-failed RAID6, still able to copy data but incredibly slow
I had a 5-drive software raid6 with mdadm setup (2 parity drives), and a drive failed. I ordered a replacement, and when I powered off the machine to swap the failed drive with a new one, ANOTHER ...
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Up to which point (disk size) is Raid 6 safe to use? [closed]
I have been reading a lot of warnings about Raid-6 becoming less and less safe to use due to the storage amount per disk as well as array sizes increasing.
What are the best practice limits/when does ...
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I added 5 drives to mdadm raid array, then I noticed 3 had partitions on them already. What is going to happen?
I have a 15 drive raid6 array using MDADM on ubuntu linux 18.04.2 server. I installed 5 more drives and added them to the raid array, and it started reshaping. However, after that I noticed that three ...
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mdadm shows inactive raid0 array instead of degraded raid6 after disk failure
I've been running an Ubuntu 18.04 system with an 8-disk raid 6 array, that crashed while having a faulty disk (I only noticed that there was a faulty disk after the crash). The raid array has survived ...
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Strange issue with Dell PowerEdge R610 hard drive status lights
I setup a test FreeNAS server the other day on a spare Dell PowerEdge r610 and noticed that the hard drive activity LEDs are always both lit no matter what the server is doing. I have 6 1TB 7.2k SAS ...
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107
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Btrfs volume missing
I have an Ubuntu 64-bit Server with 7 4TB HDD's in a Btrfs Raid 6. A few days ago I executed the btrfs balance command but forgot that this takes quite a while. 'Cause of an update, I restarted my ...
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