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Build and migrated to software raid (mdadm) on GPT disk, now can’t assemble...
mdadm, gpt issues, unrecognized partitions. Simplified question: How do I get mdadm to recognize GPT partitions? I have been attempting to convert/copy my Ubuntu 11.10 OS from a single drive to...
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How to force mdadm to use udev device names rather than /dev/sdX
The question is mostly in the title already. mdadm and /proc/mdstat insist on listing md members by their “traditional” /dev/sdX names. What I want is for them to use the newer udev device names (e.g....
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Ubuntu server, gpt partition table, mdadm, grub boot fail
Basic working system details: I used the Ubuntu 12.04 server CD to install a server. I have 4 disks. On all disks I did the following, similar to this howto : created a 2GB swap partition created a...
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strange mdadm behavior – on failing to create, md127 appears with “Device or...
Problem: # ls /dev/md* /dev/md0 /dev/md1# dd if=/dev/zero of=/dev/sdb3 bs=1M count=1 # dd if=/dev/zero of=/dev/sdd3 bs=1M count=1 # mdadm --zero-superblock /dev/sdb3 # mdadm --zero-superblock...
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Linux mdadm software RAID 6 – does it support bit corruption recovery?
Wikipedia says “RAID 2 is the only standard RAID level, other than some implementations of RAID 6, which can automatically recover accurate data from single-bit corruption in data.” Does anyone know...
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raid10 in mdadm reports incorrect “Used Dev Size”
I previously had a raid5 with mdadm using four 2TB drives. I’ve recently disassembled the raid and created a raid10 with six 2TB drives, but mdadm –detail is showing “Used Dev Size” as only 2TB (the...
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Is my hard drive about to die?
I have two hard drives set up as a RAID 1 array on my server (Linux, software RAID using mdadm) and one of them just got me this “present” in syslog: Nov 23 02:05:29 h2 kernel: [7305215.338153]...
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Best redundant way to set up multiple drives of different sizes
I have a linux server (running Ubuntu 12.04 Server currently) that I need to set up multiple hard drives of differing sizes in primarily for media/backup purposes. The sizes are: 1x2TB 1x1TB 2x500GB...
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Software Raid 10 corrupted superblock after dual disk failure, how do I...
I have a software raid 10 with 6 x 2tb hard drives (raid 1 for /boot), ubuntu 10.04 is the os. I had a raid controller failure that put 2 drives out of sync, crashed the system and initially the os...
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Adding Additional RAID Array to Ubuntu 11.10 x64 Server
I asked this on askubuntu.com as well but since it’s a server question, figured I’d throw it on SF, too. Haven’t run into this situation before but it seems simple enough. Looking for advice/guidance...
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