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Mdadm Start Array


The subject platform is a PC running FC5 (Fedora Core 5, patched latest) with eight 400gb SATA drives (/dev/sd[b-i]1) assembled into a RAID6 md0 device. Its telling you that you can't add a 5th drive to an array in a degraded state. I was able to start the array, for reading at least. (baby steps...) Here's how: Code: [[email protected] ~]# cat /sys/block/md0/md/array_state inactive [[email protected] ~]# echo "clean" > /sys/block/md0/md/array_state [[email protected] ~]# cat /sys/block/md0/md/array_state I don't understand why run is not working. http://bashprofile.net/failed-to/failed-to-start-service-failed-to-start-bind-unknown-error.html

Join Date Oct 2008 Posts 1 Quick thank you... Powered by vBulletin Version 4.2.2Copyright ©2000 - 2016, Jelsoft Enterprises Ltd. Why is absolute zero unattainable? Barring any sudden insights from my fellow Linuxens, it's looking like I have another romp with mddump looming in my future.

Mdadm Start Array

As I understand it, mdadm --run should start the array even if there is one disk missing; there are still 3 of the original 4 disks present so it should be Join Date Nov 2006 Posts 4 Backup successful! Any more tips on how to interpret the unhelpful log messages? :-/ looks like the issue is that "cannot start dirty degraded array" Looks more like a moral problem, doesn't it?

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  • [email protected] ~ # mdadm -R /dev/md2mdadm: failed to run array /dev/md2: Input/output error Top pjwelsh Posts: 2570 Joined: 2007/01/07 02:18:02 Location: Central IL USA Re: can not mount RAID Quote Postby
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You need to tell mdadm to remove a drive from the md before you add the new one. I mean... Yet trying to fail the device... On reboot, mdadm showed that the array was resyncing; that seems to have completed but still no luck in accessing /home.

It's moving kinda slow right now, probably because I'm also doing an fsck. Raid 5 A quick check of the array: Code: [[email protected] ~]# cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] md0 : active raid6 sdb1[8] sdc1[1] sdi1[7] sdh1[6] sdg1[5] sdf1[4] sde1[3] sdd1[2] 2344252416 blocks level Really? Oracle VBox w/ WinXP/Win8 running Xara Designer, PaintShopPro, and InDesign CS.

Some details: mdadm is version 2.3.2, running on OpenSUSE 12.1, kernel 3.1.10, x86_64 all hard disks have completed smartctl -t short without any errors How can I rebuild the RAID array Mounting was still failing, so we proceeded with xfs_repair -L. Results 1 to 5 of 5 Thread: [SOLVED] My degraded raid 5 array will not start Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Any more tips on how to interpret the unhelpful log messages? :-/ --- Saline Saline2 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts

Raid 5

How to cope with too slow Wi-Fi at hotel? http://serverfault.com/questions/324155/mdadm-and-raid-5-recovery Thanks, Saline Saline2 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by Saline2 10-22-2011, 04:12 PM #2 smallpond Senior Member Registered: Mdadm Start Array You will have to register before you can post in the forums. (Be aware the forums do not accept user names with a dash "-") Also, logging in lets you avoid Quote: and when I try to run the arary, I get an equally unhelpful message: excession# mdadm --run /dev/md127 mdadm: failed to run array /dev/md127: Input/output error Can someone please help

This describes what can only be a common occurrence and I guess it should be handled more obviously or at least reported more clearly in the log files, a simple "The http://bashprofile.net/failed-to/failed-to-start-game-unknown-error-gta.html Here are my disks, in the RAID order: sdc - OK sdd - (the one with read errors, removed from array while rebuilding) sde - (the one that died, replaced by Security Patch SUPEE-8788 - Possible Problems? If this is your first visit, be sure to check out the FAQ.

SATA cable. Is there any job that can't be automated? Join Date Feb 2005 Beans 56 Re: My degraded raid 5 array will not start Found out a bit more Code: [email protected]:~$ sudo mdadm --assemble --run --force /dev/md0 /dev/sd[abdefghij] mdadm: no this contact form Join Date Feb 2005 Beans 56 [SOLVED] My degraded raid 5 array will not start Yesterday I found a dead disk in my array, today I removed it.

Any inputs would be highly welcome! Game of Life, a shorter story The mortgage company is trying to force us to make repairs after an insurance claim Truth in numbers Removing elements from an array that are The log message implies that it is "starting background reconstruction" but it is not clear to me if this is actually happening or not. /proc/mdstat doesn't show anything in progress: excession#

You still have your /etc/mdadm/mdadm.conf file in place?

Next I added /dev/sdc as a spare, Code: excession# mdadm --add /dev/md0 /dev/sdc mdadm: added /dev/sdc And then saw that it was happily rebuilding the data on that disk, Code: excession# When your raid array has failed, and you are tempted to run mdadm --create, then STOP. md: pers->run() failed... Must be active md2 to can be mounted?

Browse other questions tagged raid software-raid mdadm or ask your own question. I've tried that but it gives a Input/output error as well. Why are so many metros underground? navigate here Thinking it back, it might have been that the drive actually failed during a reboot.

User contributions on this site are licensed under the Creative Commons Attribution Share Alike 4.0 International License. Ok... I'm really reluctant to issue commands against the thing (such a attempting a new create) without understanding why it is not working and what the two errors indicate.