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Questions tagged [bad-blocks]

49 questions
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BAD stripes in controller and windows utility to remap bad blocks

Ok, here is my story. I have 3 disks raid 5, one of the disks made a few surface errors and I didn't know. I tried to repair the corrupted database table in mysql and the machine froze on write. I rebooted with hard reset. It seems the other 2 disks…
Jerry2
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How hazardaous is leaving IBM RAID in bad stripes mode?

One of disks in our RAID 1 configuration gone bad, and caused the whole logical disk to become in bad stripes mode. We replaced the bad disk with a new one and complete the rebuild, but the logical drive still in bad stripes mode. Now, IBM says that…
SyRenity
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HDD bad sector marking through LUKS2 layer (dm-crypt) + ZFS

If having 2x LUKS-encrypted HDDs with a ZFS mirror pool on top of the dm-crypt mapper devices: what happens if one of my HDDs encounters an error and the OS recognizes a sector as bad ? Will this bad sector information be passed to the…
Vortex
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iowait Bound Server - Load Calculations & Process Scheduling

I have a script I'm writing that runs badblocks against a disk shelf full of drives and I'm trying to understand the server load that develops and at what point the server load is critical in this usecase. I have generally held to the general…
Zenonk
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How do I stop bad block errors in the event viewer when the RAID software reports no errors?

Our Dell PowerEdge 2950 server has 4 SAS disks in a RAID 5 array on a Dell PERC 6/i SCSI card. We are running Windows 2003 SBS R2 - 32 bit. SP2. The device, \Device\Harddisk0, has a bad block. The above error is logged numerous time in the event…
Kez
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Why are bad superblocks happening

I have Dell MD1000 storage that has 3x 2TB sata hdds (RAID 0, will move to RAID 6 soon) and 90% of time I am reading from it 40-60MBps via webserver. When I want to restart machine I simply stop webserver, unmount storage and when machine boots and…
Wiggler Jtag
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Currently unreadable sectors on RAID 5 linux drive

I have every 30 minutes smartd messages on /var/log/messages: smartd[3588]: Device: /dev/sdc, 176 Currently unreadable (pending) sectors This drive (sdc) is part of RAID 5 configured with mdadm. Mdadm monitor tells RAID is ok but i want to know if i…
Abraham
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Badblocks not displaying "Pass completed" after finishing

This is the command I am running to test a HDD with badblocks: badblocks -b 4096 -c 98304 -w -s /dev/sda1 The output is: [root@localhost liveuser]# badblocks -b 4096 -c 98304 -w -s /dev/sda1 Testing with pattern 0x55: done Reading and comparing:…
sa555
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ext4 on faulty disks. How to avoid remount read-only?

The Problem: I'm in charge for a Hadoop cluster of 44 nodes. We have 1.5TB WD Green Drives with (quite unknown) the Load Cycle Count problem. These disks work fine but as they get older they show an increasing number of bad blocks. Rewriting these…
kei1aeh5quahQu4U
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Hard drive errors: probably 2 bad sectors and nothing is working

All started with bsod from WindowsXP: unmountable boot volume. Then I tried ubuntu and Palimpsest. SMART status was OK (2 bad sectors), but all test failed on "reading system" (I don't know if I translate it correctly). So I tried SeaTools from…
Ari
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Forcing a SCSI HDD to rewrite a damaged sector

For a SATA/PATA HDD, this would be the normal procedure: http://www.sjvs.nl/?p=12 But a customer of mine has an old server with actual SCSI drives. I have tried re-writing the sector with dd to no avail; I keep getting the I/O error as per this…
Alastair Irvine
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Maintain RAID to keep it healthy - data scrub

I want to be prepaired the best to keep my linux sw-raids healthy. So I know it's very important to maintain the data on a RAID to keep it readable in event of disk failure. If not, an URE could prevent a correct rebuild. So I myself: What would be…
Mose
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seagate faulty replacement hard drive

My Seagate hard disk got bad sectors and wasn't usable any more. Seagate's SeaTools utility also indicates that. It was under warranty; so I returned that in Seagate SeaCare center and got a replacement drive within a few weeks. But even the…
Mandar
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Raid 1 Mirror - weird data loss for 1 month

I have been running windows software RAID 1 (mirror) on Windows 2008 R2 for a while and recently I experienced something very odd, hope someone can help explaining and share your view. Yesterday (Mar 14) my Windows 2008 R2 server just crashed and…
userb00
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Recover data from broken RAID 1 drive

I need to save files from a Buffalo NAS Linkstation with two physical drives that is not working anymore (2TB each, Raid 1). Error message says: The bad sectors in the hard drive may have reached a dangerous level. Replace the hard drive. I…
peterPetersonling
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