All Questions
508
questions
2
votes
0
answers
96
views
Mounting External Intel Raid Device on Linux Failing, No Suitable Superblock and Read Past End
I have a hard-disk from a dead machine that I'm trying to mount on my Linux machine. For reference, I'm using Fedora 39 and mdadm v4.2. First, I tried just mounting it, correctly showing it's a RAID ...
- 221
1
vote
0
answers
41
views
When I use four drives, one operates very slowly
I’m experiencing unusual behavior with my system. When I attempt to write to four disks concurrently. In fact, the last disk (/dev/sdd) consistently operates at a speed ranging from 40MB/s to 5MB/s.
...
- 11
0
votes
0
answers
51
views
Bcachefs: remove dead drive from an online filesystem
I'm playing around with bcachefs to see how it handles various scenarios.
Currently, I'm doing a simple experiment where I'm writing random data to a file on an array with 3 HDDs set up with 2 data ...
0
votes
0
answers
16
views
USB disk on a VBox on RAID was repartitioned
I have an Ubuntu on a VBox on Windows 10 Pro. The Ubuntu had a Raid 1+0 with 2 external USB disks. Suddenly, when I restarted the server, both disks got repartitioned with these: PARTLABEL="...
- 334
2
votes
1
answer
178
views
How to recover a RAID 5 after deleting the partition table and fstab?
I have a RAID5 set up for my storage drives on my Nixos 23.11 machine. I followed this guide to set up the RAID (and I followed it very closely).
I have just reinstalled Linux on my boot drive (...
- 41
0
votes
1
answer
117
views
Seagate Ironwolf 4TB drives reverting APM settings on Ubuntu 22LTS after upgrade from 20LTS in RAID-5 array
I recently upgraded my system from Ubuntu 20LTS to Ubuntu 22LTS, and I've encountered an issue with my RAID-5 array consisting of four Seagate Ironwolf 4TB hard drives (from /dev/sda to /dev/sdd). ...
0
votes
3
answers
114
views
Reassemble RAID0 array despite error
My ancient Synology CS407 was setup (deliberately) with RAID0 and I didn't have a backup system set up yet. There are four 1TB drives making a 4TB volume. One drive had a failure which led to the on-...
- 101
0
votes
0
answers
15
views
Using mdadm to perform no-downtime backupd
I have a server running Ubuntu 23.10. It contains several RAID 1 arrays created using mdadm. One of these holds the virtual machine disk images of my web-servers. Currently, to backup these images, I ...
- 1
0
votes
1
answer
217
views
Why am I getting "Partition 3 does not start on physical sector boundary" warning with this setup?
On a fresh install of Proxmox 8.1, fdisk -l is warning "Partition 3 does not start on physical sector boundary". This is unexpected to me, because the start of the partition is 2099200, ...
0
votes
0
answers
93
views
How to recover RAID 1 array from a single device during reshape?
I have one disk that is in raid 4 reshaping from a previous raid 1. According to examine mode by mdadm, the disk is marked as a spare in a raid 4 array of 3 disks. I was hoping to recover data on it ...
0
votes
0
answers
53
views
Unable to access data on Intel "fake RAID" after failed Ubuntu update
Recently I did an update of my Ubuntu, it seems to work at first but after restart it shows:
kernell ofset relocation range kernel panic not syncing: VFS
I try to use different older kernel from Grub ...
- 101
0
votes
1
answer
93
views
How to convert ext4 partition on raid 1 to btrfs?
I'm trying to convert two ext4 partitions that are on raid 1 with mdadm to btrfs.
When i try to run
fsck.ext4 /dev/md0p2
fsck.ext4 /dev/md0p3
They return with
e2fsck 1.46.5 (30-Dec-2021)
/dev/md0p3 ...
0
votes
1
answer
243
views
mdadm grow fails with "mdadm: Cannot add bitmap while array is resyncing or reshaping etc."
We have a RAID-1 setup. We changed the old 1TB disks for 3.7TB disks. The disk changes worked without a problem, the disks are in sync. We did have to change the partition type from MBR to GPT, but ...
- 17
1
vote
1
answer
166
views
How to resize a linux raid-1 volume?
my some-years-old linux server has four raid-1 volumes:
/dev/md1 on /boot type ext4
/dev/md2 on / type ext4
/dev/md3 on /home type ext4
/dev/md4 on /data type ext4
The four volumes are stored in this ...
- 11
0
votes
1
answer
2k
views
How to extend Disk Space with LVM on Linux Server: Limited Hardware, High Capacity Needed
Regarding LVM Partition
I am using a Linux server machine (IBM) for a genome assembly task. The OS is Ubuntu, version 22.04.2 LTS (Jammy Jellyfish)
The machine has a memory capacity of 248 GB. There ...
