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Fsck on partition inside RAID broke file system AND RAID

What was: RAID 1 with mdadm on whole disks say /dev/md0 from /dev/sda and sdb, GPT with one partition on md0 and ext4 on this partition (md0p1). What I think happens: after changing motherboard linux ...
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2answers
708 views

4-drive RAID-6 implementation and GPT

My current idea is to create 1x software RAID-6 with 4 member drives using mdadm. Specifically, they would be 1TB HDDs on SATA in a small server. System: Linux Debian Jessie 8.6. That makes 2TB of ...
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1answer
1k views

How to re-create RAID1 really properly

System: Laptop with Linux Mint 17.3, 1x SSD for system and 2x HDD intended for RAID1 using mdadm. Situation: Without knowing how to create RAID1 properly, I created it badly. GParted showed a ...
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1answer
5k views

mdadm: no devices listed in conf file were found - Debian 8 with GPT

I have a Debian Jessie (3.16.7-ckt20-1+deb8u3) system with RAID1 on 2x 3TB hard drives. Grub can't be installed into MBR on drives >2TB, thus I have GPT with 1MB bios partition: Device Start ...
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1answer
2k views

Why is uEFI firmware unable to access a software RAID 1 /boot/efi partition?

BIOS firmware can boot a BIOS formatted /boot partition installed on a software RAID 1 pair no problem. It can even boot from a /boot installed on LVM volume that lives on a software RAID 1 pair. But ...
6
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2answers
5k views

Grub fails to install - Debian Wheezy with mdadm RAID1 and GPT partition table

I've been trying all day to get my new Wheezy install completed but it fail to install Grub every time. I'm using x64 netinstall iso. Here is my partition table: Model: ATA ST3000DM001-1CH1 (scsi) ...
1
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1answer
4k views

“Spare” disk in a 2-disk mdadm RAID1 array?

I recently had a RAID1 volume fail. It had three primary partitions in it, all participating in separate, but similarly configured VGs. This configuration comes from the fact that the machine is ...
0
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1answer
199 views

Data integrity after GPT restore on Mdraid configured disk

I've restored backup GPT headers on previously GPT partitioned disks that are member of a Linux software raid (mdraid). This was done because partprobe reported corrupted headers. Now actually ...
9
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1answer
26k views

Using UUID's with mdadm

I'm using GPT as my partitioning scheme. I check the UUID's of my partitions: # ls -l /dev/disk/by-partuuid/ total 0 lrwxrwxrwx 1 root root 10 Oct 18 22:39 0793009a-d460-4f3d-83f6-8103f8ba24e2 -> ....