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Raid 5 Read Error Not Correctable


Default of 8 seconds might be fine as a standalone drive for data, but in a RAID array, many people with these drives recommend setting it to at least 2 minutes This will require another disk (you can run a four- or even three-disk RAID6, you probably don't want to). I also tried creating a two-device RAID1 with just /dev/sdb1 and /dev/sdc1 as suggested - this worked fine, with both devices listed as active sync. If I had just done a bit more research about what I was doing before I went ahead bought my gear, then I wouldn't have got the same drives - you Source

Can anybody help me? Next time it'll probably have some serious data on it. Disproving Euler proposition by brute force in C Is it safe for a CR2032 coin cell to be in an oven? what does one mean by numerical integration is too expensive?

Hdparm Read-sector

I'm email-subscribed to the thread still, so if anyone has any other questions or wants me to try anything else, feel free to post. Is the ability to finish a wizard early a good idea? things keep working as long as it's only one. I'm not sure why its being labeled as a spare—that's weird (though, I guess I normally look at /proc/mdstat, so maybe that's just how mdadm labels it).

This way you don't put any extra stress to the failed hard disks, and you have the best chance to recover data. Error logging capability: (0x01) Error logging supported. Fantasy Story about Phantom Tollbooth/Where the Wild Things Are kids as Adults What kind of bugs do "goto" statements lead to? Sense Key : Medium Error [current] Do you physically disconnect a drive (as I did), or do you just do a --fail and --re-add with mdadm?

Why study Higher Sheaf Cohomology? Add. Sense: Unrecovered Read Error - Auto Reallocate Failed I'm currently gathering some logs which should be of interest, which will just take a while due to waiting for SMART tests to complete. Program aborted. $ hdparm -write-sector 1261069669 -yes-i-know-what-i-am-doing /dev/sdb /dev/sdb: re-writing sector 1261069669: succeeded $hdparm -write-sector 1261071601 -yes-i-know-what-i-am-doing /dev/sdb /dev/sdb: re-writing sector 1261071601: succeeded Now, use hdparm again to check the availability Some advice I found said to check /var/log/messages for notices of failures, and sure enough there are plenty: [email protected]:~$ grep sdb /var/log/messages ...

Unity Random.Range not repeat same position What does the word "most" mean? Hdparm Yes I Know What I Am Doing Should non-native speakers get extra time to compose exam answers? I can not --assemble the array as it sees sdc and sdd as faulty. Even bytes get lonely for a little bit!

Add. Sense: Unrecovered Read Error - Auto Reallocate Failed

You've had two devices fail in a RAID5. On the basis that testing should be as realistic as possible and as severe as possible, I am considering: 1) While stream writing data to the array, pull out the power Hdparm Read-sector I tried to test my new, clean 3-device array by failing, removing and re-adding /dev/sda1, (I'm using sd[abc]1 now instead of 5 on my fresh installation), but when I re-add it, Hdparm Make Bad Sector Ultimately, the best "fix" and lesson-learned here is to stay well away from so-called "power-saving" drives for Linux software RAID.

asked 2 years ago viewed 632 times active 2 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Visit Chat Related 2how can I boot linux from http://peakappcare.com/read-error/read-error-in-data-read-ansys.php 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 Does the Many Worlds interpretation of quantum mechanics necessarily imply every world exist? What's the point of Pauli's Exclusion Principle if time and space are continuous? Hdparm Repair-sector

maybe raid5 with a backup disk or something else.. In summary, my experience serves as a(nother) case study that WD Green drives should probably be avoided where possible in mdadm RAID applications. mdadm: /dev/sdb1 is identified as a member of /dev/md0, slot 1. have a peek here That's bad.

My trouble began when I plugged the third drive back in and re-booted. Hdparm Pending Sector In /var/log/messages I can see: read error not correctable (sector 753682864 on sdc). Does store bought barbecue sauce need to be heated/cooked before consumption?

I'm guessing that sdc was sdb at the time when your array was degraded -> it has Raw_Read_Error_Rate of 63 -> there were real read problems that could lead to big

ashikagaFebruary 10th, 2011, 11:06 PMOr, you're trying to use the Western Digital Green drives, and they're taking too long to respond and getting kicked out of the array. Right now, I would really love to have a RAID device at /dev/md0 in a clean state with three active devices /dev/sd[abc]5... Hope this helps, note +1 rubylaser, you always has top-notch md advise. Unhandled Sense Code I might try failing the other two drives and re-adding them to make sure it still works, but assuming it does, is this likely to be a reliable fix?

The adjectival use of "chao" Setting the target on an internal link field Can Feudalism Endure Advanced Agricultural Techniques? Last edited by Fackamato (2010-11-01 12:10:55) Offline #2 2010-10-20 15:54:57 lilsirecho Veteran Registered: 2003-10-24 Posts: 5,000 Re: [SOLVED] mdadm / RAID trouble Query the mdadm.conf file and/or /etc/proc/mdstat for some info Supports SMART auto save timer. http://peakappcare.com/read-error/read-error-not-correctable-sector.php Rather you need to add the disks like this: $ mdadm --create /dev/md0 --level=5 --raid-devices=4 \ /dev/sda1 /dev/sdb1 /dev/sdc1 $ mdadm --add /dev/md0 /dev/sdd1 Or you can use mdadm's option to

If Selective self-test is pending on power-up, resume after 0 minute delay. The OS, swap partition etc. I have done this many times successfully in similar RAID5 failure scenarios. Oct 2 15:24:19 it kernel: [1687112.821837] md/raid:md0: read error not correctable (sector 881423432 on xvde).

SMART is most valuable when You can tell what have changed, so its good idea to save current reports. md: pers->run() failed ... Please let me know what you think I should do. This is not critical usually, but those disks have also bigger P-O-R, what can be considered as confirmation of power problems. 3.