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The Virtual Disk has bad blocks on Poweredge r720

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i have Raid-5 config with 3 HD(3TB) and 1 Hotspare. I already run Consistency check but still after running, bad blocks persist. Is it safe now to run "Clear Virtual disk Bad Blocks"??? Right now the Read Patrol is still running.

I am planning to replace the disk with Bad Blocks but i cannot pinpoint the disk with bad blocks as status of all disk are OK and online. In the logs this is what i saw,"Unexpected sense. SCSI sense data: Sense key: 1 Sense code: 0 Sense qualifier: 0:" on Physical disk 0:1:0 and Physical disk 0:1:2.

Does this mean Physical disk 0:1:0 and Physical disk 0:1:2 are the disk wit bad blocks?? or How to pinpoint the disk with Bad blocks??

I cannot perform the backup as the backup exec fails even after running consistency check.

Help please....

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12 Replies

Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi,

Can you please let me know what controller you have? If your controller supports a TTY log, please attach a copy to your post. Here is a link for pulling a log.

www.dell.com/support/article/sln249450/

Thank you,

Jim Plumlee
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi Jim,

Thanks very much...It is Perc H710 mini.

 

regards

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Morning,

Please let me know your email and I will set up a lock box you can transfer the files to.

Thanks,

Jim Plumlee
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi Jim,

in my previous response I shared the link to where you can view the file...

thanks again...

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Unfortunately I am unable to go to that link.

Jim Plumlee
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Thanks Jim,

regards

 

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi jim,

hopefully you had received the tty log file...

Thanks and best regards

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi,

Thanks for the controller log. I see that drive 1 failed due to timeouts back in November and was replaced by the hot spare. Drive 1 was then copyback by drive 3 which was the hot spare and inserted back into the virtual drive. There weren't any errors being reported on drive 1. The timeouts could be caused by another drive. Drive 0 has had several block errors (sense code 3:11:0 Medium Error - unrecovered read error)  and continues to do so. it will probably go predictive fail in the future after enough errors occur. You can wait for the drive to go predictive fail and replace at that point or proactively replace. Seeing that the medium error is being recovered. "Corrected medium error during recovery on PD 00".

Jim Plumlee
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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Re: The Virtual Disk has bad blocks on Poweredge r720

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Hi Jim,

Thanks...are you referring to Physical Disk 0:1:0??  it has a lot of error;

"Unexpected sense. SCSI sense data: Sense key: 1 Sense code: 0 Sense qualifier: 0: Physical Disk 0:1:0 Controller 0, Connector 0"

I am planning to replace Physical Disk 0:1:0 (i will manually make it offline so that the Hotspare will takeover) and eventually put a new disk.

Hopefully after replacing the disk the "Virtual Disk bad blocks" will disappear. If the bad blocks will not disappear, is it safe to "CLEAR Virtual Bad blocks" from Dell Open Manage???

I run the "Consistency check" last Feb 4 and it was successful and Pass and then run the "Patrol Read" last feb 5 but until now the Patrol Read is still running... Is it OK to Stop the Patrol Read???

Thanks you very much...

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