dma crc error count and disabled Parity Drive


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Hello,

 

i got some "dma crc error count" and then my Parity Drive was disabled.

 

The only thing i did, is disconnecting an 2TB Unassigned Disc and changed it against a 4TB one on the same port. Then started the backups script from this thread:

 

Diagnostic is attached.

 

Is there a way to bring my Parity Drive back online, without using "new config"?

 

I hope, you can help me. Thank you.

 

unraid-1-diagnostics-20210603-2003.zip

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17 minutes ago, sonic6 said:

i got some "dma crc error count" and then my Parity Drive was disabled.

CRC errors are usually caused by defective cabling and/or controllers.

 

How is the parity drive connected? Possible to swap the cable?

 

 

 

 

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Posted (edited)
10 minutes ago, mgutt said:

How is the parity drive connected? Possible to swap the cable?

Parity Drive is connected to an HBA: IBM ServeRaid M1015 SATA / SAS HBA Controller (IT Mode) with a Mini SAS 36 Pin-Stecker (SFF-8087) to 4 x SATA

i can swap from P00 to P01 on the HBA

when i installed this, i was very carefully and this worked since february 

 

what is the best way, to bring my parity back online?

Edited by sonic6
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25 minutes ago, sonic6 said:

what is the best way, to bring my parity back online?

From my understanding, Unraid only disables a drive when it cannot write to it.

So, if it was disabled, the content of your Parity drive is probably out of sync with the Array.

You could do a new config and say that Parity is valid, but it is probably not.

 

Let's see what our more experienced users think of that.

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4 minutes ago, ChatNoir said:

You could do a new config and say that Parity is valid, but it is probably not.

Let's see what our more experienced users think of that.

i hope there is another way... i don't want to lose all my drive configurations...

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31 minutes ago, sonic6 said:

i hope there is another way... i don't want to lose all my drive configurations...

I was not afraid of data drives content, only of Parity rebuilt. jonathanm's answer match what I was expecting.

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i wasn't afraid of my data, only about my drive configuartions like temperatures, etc...

 

thank you guys for the help.

 

i ordered two new cables and will report in a week or two

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