Raid 5 Read Error Not Correctable
up vote 4 down vote favorite The short version: I have a failed RAID 5 array which has a bunch of processes hung waiting on I/O operations on it; how can Not very satisfactory, though. With new enough kernels, bad blocks are fixed on the fly when possible. I need to understand this so I can have a RAID that won't fail because of a single disk failure. http://vealcine.com/read-error/read-error-not-correctable.php
before re-creating the array. Why is the nose landing gear of a Rutan Vari Eze up during parking? Should non-native speakers get extra time to compose exam answers? Short self-test routine recommended polling time: ( 2) minutes.
Oct 2 15:24:19 it kernel: [1687112.821837] md/raid:md0: Disk failure on xvde, disabling device. Currently though I can't shut down :( –Ben Hymers Mar 8 '11 at 23:47 1 I'll accept this answer as it's the most relevant to the original question, and would Selecting RAID5 for this application is an error as it offers essentially no effective redundancy. Sense Key : Medium Error [current] Extended self-test routine recommended polling time: ( 255) minutes.
Share a link to this question via email, Google+, Twitter, or Facebook. Add. Sense: Unrecovered Read Error - Auto Reallocate Failed Thanks for the tip, kevinthecomputerguy - I have been powering the machine off regularly, but I tried pulling the power cable out for a while as well in-between trying to create All rights reserved. Conveyance Self-test supported.
Best practices?2mdadm raid5 failure. Hdparm Yes I Know What I Am Doing Browse other questions tagged linux raid software-raid raid5 or ask your own question. nas kernel: [...] md/raid:md0: Operation continuing on 2 devices. Suspend Offline collection upon new command.
Add. Sense: Unrecovered Read Error - Auto Reallocate Failed
Related 4How do I get mdadm to auto assemble my raid array?2how can I boot linux from a software raid 1 array1What is the procedure for reactivating a failed mdadm RAID5 Unity Random.Range not repeat same position What does the word "most" mean? Hdparm Read-sector more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Hdparm Make Bad Sector It worked so thanks again.
kevinthecomputerguyFebruary 6th, 2011, 03:15 AMI've seen this whole scenerio before, and the diff for me was powering off the server for a minute, and UNPLUGGING EVERYTHING, instead of just reboots. useful reference To do this I pulled the plug on one of the disks (sdd). share|improve this answer answered Aug 26 '14 at 8:40 peterh 1 How do you use the bad block relocation module? –Marinus Aug 26 '14 at 8:44 @Marinus thanks 88 88fingerslukee View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by 88fingerslukee 12-05-2012, 08:53 AM #2 pravesh jangra LQ Newbie Hdparm Repair-sector
Offline surface scan supported. Oct 2 15:24:19 it kernel: [1687113.685151] Buffer I/O error on device md0, logical block 96 Oct 2 15:24:19 it kernel: [1687113.691386] Buffer I/O error on device md0, logical block 96 Oct I'm using the Archboot 2010 r7 usb stick now, trying to salvage things... (6TB of precious data)[Arch Linux: /]# mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 mdadm: /dev/md0 assembled from 1 drive my review here With a consumer grade drive's standard URE rate of 1 in 10^14 bits it is simple math to calculate that the probability of at least a single read failure over that
Instead of that, I use filesystem-based cluster solutions. Hdparm Pending Sector mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot -1. Just as a test, I would stop your array, then remove each disk from the array, remove the mdadm.conf file, and zero the superblocks again.
sdb1 Update Time : Tue May 27 18:54:37 2014 sdc1 Update Time : Tue May 27 18:54:37 2014 sdd1 Update Time : Mon Oct 7 19:21:22 2013 sde1 Update Time :
What's the point of Pauli's Exclusion Principle if time and space are continuous? nas kernel: [...] md: unbind
sdg) drives:http://dpaste.org/40Wd/I'm rebooting the server now to see if that helps...edit: Ugh, can't ssh in! nas kernel: [...] md: pers->run() failed ... Thanks kindly to all who helped me out. get redirected here linux software-raid raid-5 bad-sectors mdadm share|improve this question edited Feb 9 '12 at 9:28 asked Feb 8 '12 at 23:29 siebz0r 31619 How many bad sectors are there?
Going forward, consider RAID6 with large drives like this and make sure you have monitoring in place to catch device failures so you can respond to them ASAP. Offline #3 2010-10-20 16:44:53 Fackamato Member Registered: 2006-03-31 Posts: 575 Re: [SOLVED] mdadm / RAID trouble The server doesn't boot for some reason. I haven't yet had time to try replacing cables or switching SATA ports around; however, as suggested in another thread, I tried disabling NCQ on all three drives and re-created the Is there a way I can force it to not to be dropped.
It quits syncing (the time that I monitored it was about 60% complete) and gives a "read error not correctable" for /dev/sdc. Garza February 26, 2011 at 21:11 Great article. y mdadm: array /dev/md0 started. md: unbind
Your OS may already include a cron job for this. Consider making a Bitcoin donation to: 1LFxPcJXRyLpr6KG4A7WNLXvo64CNLovwh Tagsc++ compression Debian Eclipse email gmail GPS hotmail HOTP KVM Linux London map OATH OTP programming Qt reachability research SIGMOD subversion svn transitive closure Supports SMART auto save timer. It's a RAID5 array!![Arch Linux: /]# fdisk -l /dev/sd?