Questions tagged [raid0]

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mdadm: after a re-install, two raid1 partitions were relabeled raid0 but the data are raid1

Maybe the simplest thing is to just mount one partition by itself read only and pull the little bit of data not fully backed up and rebuild from scratch. Otherwise, since there has been no I/O ...
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  • 131
16 votes
3 answers
2k views

How does RAID0 work underneath, when the devices have different sizes?

To my surprise the CentOS 7 installer allowed me to create a RAID0 device consisting of roughly a 17 GB disk and a 26 GB disk. I would've expected that even if it allows that, that the logical size ...
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Need help figuring out why this LUKS setup isn't working

Problem: I'm trying to set up an encrypted raid0 device with btrfs. I'm able to get beyond the first password prompt to enter the LUKS device but after that I get an error from fsck saying something ...
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2 votes
2 answers
42 views

Is it possible to keep data in procedure Raid1 growing to Raid5?

I have Raid 1 /dev/sda /dev/sdb as md0 then now I want to expand for Raid5 So, my idea is sudo mdadm --add /dev/md0 /dev/sdd sudo mdadm --grow /dev/md0 --level=raid5 --raid-devices=3 In these ...
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  • 165
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1 answer
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btrfs RAID0 - should I stripe or duplicate metadata?

I want to use btrfs with raid0 on three nvme drives. These should contain the operating system and most application files, whereas valuable user files will be on a network drive or seperate disk. ...
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0 votes
1 answer
2k views

linux stress, impose work on specific disks

Have a server running centos 7.6, and it has 4 ssd's as Raid-0 mounted as /scratch/ I have the linux program stress-1.0.4-16 and I just learned stress-ng existed. Is there a way with stress to tell ...
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0 votes
1 answer
449 views

MDADM creates additional block devices

I noticed a strange issue when creating RAID array with mdadm. As far as I see, it creates additional devices of md type. According to the kernel.org documentation, the md device type is Metadisk (...
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  • 263
1 vote
0 answers
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How to convert RedHat 7 Raid 0 system from UUID to device (sda/sdb)

I'm trying to create an image of an RHEL 7.6 Raid0 device. I've eliminated the UUIDs from grub.conf, but the target device is still failing on boot because it's looking for the UUIDs from the source ...
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3 votes
1 answer
4k views

Extending RAID0 with `mdadm --create --assume-clean`?

I had a 1-disk RAID0 array that I created with a view of adding more disks to it eventually, that was working normally. I created it with (approximately): $ mdadm --create /dev/md0 --raid-devices=1 --...
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-1 votes
1 answer
331 views

linux + tool that can identify RAID configuration [duplicate]

I am searching for a long time tool that can runs as CLI on linux machine and identify which RAID configuration is defined on the disk or disks ( according to the list from lsblk ) the reason for ...
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2 votes
1 answer
786 views

Is it possible to clone Linux software RAID 0 array with LVM on top to a single HDD?

I have 2 500GB HDD in 3 software RAID 0 arrays with LVM on top. Both disks are partitioned: -MBR partition table -256 MB Physical volume for RAID -4 GB Physical volume for RAID -remaining 496 ...
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1 answer
4k views

'mdadm: RUN_ARRAY failed: Invalid argument' when creating RAID0

I'm trying to create a RAID0 from two identical hard disks but running into an error from mdadm when I try to create the array, mdadm: RUN_ARRAY failed: Invalid argument. Here's what I'm doing that ...
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  • 1,558
0 votes
1 answer
1k views

fakeraid + UEFI + GPT - grub doesn't detect raid volume after debian install using dmraid

I have a post on the debian forums as well but it seems to have less traffic than here so I thought I'd try my luck here as well. I'm trying to install windows 10 and debian and possibly more ...
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  • 11
1 vote
0 answers
2k views

Assistance with mdadm.conf syntax for reassembly of existing RAID0

I'm trying to recover a friends data from a Sony Vaio VGN-AW47GH Laptop. It has a pair of Toshiba MK5055GS 2.5" 500GB HDD combined (according to my reading) into a 1TB RAID0. The laptop is no longer ...
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  • 11
1 vote
1 answer
529 views

mkswap complains that partition is misaligned (LVM on RAID-0)

I have a RAID-0 setup on two identical hard disks (same brand and model). The partition table is identical on both (I have cloned it). However, /dev/md0 occupies only part of the disks, because I had ...
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  • 171
2 votes
1 answer
1k views

raid5 array reassembles as raid0

I found simmilar problem here: Missing mdadm raid5 array reassembles as raid0 after powerout, but mine is a bit different. Here too my raid5 reassembles as raid0, but i don't see any of my devices ...
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3 votes
1 answer
151 views

BTRFS has become unmanageable

I'm struggling with a btrfs RAID0 filesystem. It's expanded on 4 disks but i need to remove one of those disks. This is the current status of the filesystem: [root@osgiliath detlev]# btrfs fi show /...
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2 votes
1 answer
2k views

'PARTUUID' in '/etc/fstab' and (hardware) RAID0 don't play well together, do they?

Fresh Arch Linux install on (hardware) RAID0 under 64-bit UEFI system with GPT partitions. Had to add MODULES="ext4 dm_mod raid0" HOOKS="base udev autodetect modconf block mdadm_udev filesystems ...
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1 vote
1 answer
120 views

Unable to mount RAID 0 drive

When I run the following command: sudo dmraid -ay I'm getting this error: ERROR: opening "/dev/mapper/isw_cigjeghbef_RAID 0" And, after attempting to open the drive in the file explorer, I get ...
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2 votes
1 answer
2k views

Unable to boot after installing grub for new Arch Linux Install on Acer S7

I have followed the instructions on the Arch Linux beginner's guide to do a dual boot on an Acer S7-392. I only did not do the initramfs part and I did not create the partitions at the install since I ...
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  • 141
1 vote
2 answers
9k views

Use MegaCLI to add a new hard disk to existing RAID0 in Linux

There are two hard disks on my machine, but after installing the operating system, it uses only one hard disk to build RAID0. After installing MegaCLI, I used: MegaCli64 -pdlist -aALL to display ...
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0 votes
1 answer
597 views

XFS on Volume Group or Mdadm Raid 0

Im starting to use XFS because I want to create a highly parallel disk array and experimenting on just 2 drives for now. I had thought that if I used a logical volume group to join two physical ...
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  • 1,957
1 vote
1 answer
232 views

Clone installed system by using the hardware RAID 0+1 synchronization

Alright, following setup: 2 identical machines (DELL Power Edge T320) with a hardware raid. one machine is running for a while now, one machine hasn't even been set up at all The running machine has ...
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  • 4,233
2 votes
1 answer
5k views

Adding badblocks on mounted partition

I tried to move some files to my NAS (ShareCenter DNS-320), but something shows up, when using file managers: Input/Output error or when using rsync on mounted cifs/smb share rsync: close failed on ...
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  • 7,981
2 votes
1 answer
4k views

How do I set up RAID0 using extra two drives? [closed]

I have been looking around for a suitable tutorial to help me set up a RAID0 across two (or more) drives, but not moving the actual installation of Linux Mint onto that RAID setup. A coworker had ...
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