Questions tagged [mdadm]
a utility to administrate Linux Software RAID devices
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Advice for clean upgrade to 24.04 from 23.10 with RAID1 using mdadm
Looking for advice on how to to a clean install / upgrade from 23.10 to 24.04 on a desktop computer I use for streaming/Plex that also has 2x12 TB (Ext4) drives in RAID1 configuration using mdadm.
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Recovery of LUKS encrypted mdadm array from zeroed superblocks possible?
I have (had?) an mdadm raid5 array that contained 3 8TB drives (identified via lsblk as sde, sdf and sdi). I did an incredibly bone-headed thing and zeroed the superblocks on these devices -- I was ...
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Ubuntu 24.04 softraid (md) install and boot
Trying to install Ubuntu 24.04 server using 2 NVMe in software raid (using TUI installation)
i need to set them in mirror and install + boot Ubuntu 24 from them.
when creating a raid (md) or LVM for ...
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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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mdadm raid fails to assemble on boot (Ubuntu 24.04)
Mdadm raid is in inactive state after boot, with one drive missing (4/5).
$ journalctl -b | grep -E 'mdadm|md0'
(udev-worker)[706]: md0: Process '/usr/bin/unshare -m /usr/bin/snap auto-import --mount=/...
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66
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partclone - what am I doing wrong?
I'm writing some backup scripts for my machines. Up until now, I have enjoyed using partclone, but now I've hit a snag.
On this machine there's a large MDADM RAID which contains one EXT4 partition. ...
- 403
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RAID 6 Array Not Showing Full Drive Size with mdadm
I have an adaptec series 7 controller with 6 12TB drives. I used mdadm to create a RAID 6 array. However, when I list the array the drives show 10.7TB each rather than something closer to 12. Anyone ...
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IMSM (Intel Matrix Storage Manager) device is not detected by Linux kernels 6.6.x/6.7.x but works in 5.19.17
In kernels 6.x.x /dev/md/imsm0 does not appear at boot.
The only difference I see in dmesg which seems to be relevant:
block device autoloading is deprecated and will be removed.
Printed in 5.x.x, ...
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Trying to rebuild a 2 disk RAID0 array, superblock overwritten, but backup superblocks look good
I have two hitachi 1TB hard drives that were 2TB of storage in a D-link DNS323 NAS appliance. The NAS device sat in storage for a couple of years. When I fired it up the D-link NAS reported no array. ...
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Cloning ubuntu boot into software RAID 1 array
I have a Ubuntu server whose boot drive exists on an old HDD. I am wanting to clone this boot drive over to a RAID 1 SSD array. I don't know how to go about this correctly, since it will be a software ...
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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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set up RAID 1 on 2 data hard disks in Ubuntu Server 22.04, but it's not functioning properly
I'm currently using Ubuntu Server 22.04 with three hard disks - one for the installed OS and two for data storage. I've attempted to set up RAID 1 between the two data hard disks, but I'm encountering ...
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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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RAID 1 system migrating using mdadm without loosing data from HDD
I'd like to migrate from one system with RAID 1 (array of 2 discs 3TB) to Ubuntu Server and create an array using mdadm. How can I do it and preserve data on those discs without formatting? Both ...
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How to manage raid devices doing automated checks?
I've got a RAID6 set up, and every now and then it does a check, and during that check, it seems I cannot write to the entire array.
Details:
Personalities : [raid6] [raid5] [raid4] [linear] [...
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