Parity was not found


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Turned on Unraid just now & parity was not found

 

The Parity Disk was connected with a $17.50 Krysma 50cm / 0.5m Mini-SAS SFF-8087 to 4x SATA Adapter Cable

to LSI SAS 9201-8i 6GBs SCSI Card  ...  4 Disks are connected 

 

Shutdown & connected Unraid to a monitor & keyboard  then rebooted

LSI config showed  3 Disks connected  Parity Disk was missing

 

Shutdown & disconnected Parity Disk from LSI Card & connected it to a spare Motherboard Sata  .. Parity found & all is good

 

Would this be the cheap $17.50 Krysma Mini-SAS 4x SATA Cable - the wires are very thin & weak looking?

Edited by pokes
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49 minutes ago, pokes said:

Would this be the cheap $17.50 Krysma Mini-SAS 4x SATA Cable - the wires are very thin & weak looking?

It's possible, try swapping with a different disk.

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Unplugged  spare from MB Sata & connected to LSI SCSI Card OK

I think it's the Parity Disk

"Unraid Parity disk SMART health [99]...

Warning... - udma crc error count is 4

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34 minutes ago, pokes said:

Warning... - udma crc error count is 4

This is a connection problem, not a disk problem.

 

30 minutes ago, pokes said:

How do I make the spare disk into the Parity Disk

Stop array, assign spare to parity slot (or parity2), start array.

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Could this "199UDMA CRC error count 7" be from swapping cables around?

 

Anyway still trying to find how to make the spare disk into a Parity Disk

 or Dual Parity then replace the error Disk 

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13 minutes ago, pokes said:

Could this "199UDMA CRC error count 7" be from swapping cables around?

Yes.

 

13 minutes ago, pokes said:

Anyway still trying to find how to make the spare disk into a Parity Disk

 or Dual Parity then replace the error Disk 

 

37 minutes ago, JorgeB said:

Stop array, assign spare to parity slot (or parity2), start array.

 

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25 minutes ago, JorgeB said:

Stop array, assign spare to parity slot (or parity2), start array

Can't change spare to unassigned  .. only option is to change it no device & then assign to parity 2 

 but this greys out start array ( stopped invalid configuration)

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Posted (edited)

stop array 

change disk to no device 

Tick "Start will disable the missing disk ..."

then assign Dev 1 (spare) to Parity 2 ?

Edited by pokes
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JorgeB thanks for your help so far

 

I've got orders to sit at the table for dinner from she who must be obeyed

so I will be missing from action for a few hours

 

Regards Pokes

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40 minutes ago, pokes said:

It's status = active

smart =heathy 

It's not in any share

That's not a spare.

 

You can do a new config, assign that disk as parity and start array to begin the parity sync.

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A spare must be out of the Array, potentially out of the server altogether.

 

If needed, a spare will replace a disk of the Array, either a Data disk or a Parity disk.

If it is already part of the array, the replacement procedure will invalidate Parity at one part or the other of the process.

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Posted (edited)

I'm a bit confused

 

I have 8 disks all 4TB

1 x disk is the Parity disk

1 x disk (No.1) is in Share A - (18% full)

5 x disks (No.'s 2-3-4-5-6) are in Share B - (57% full)

and 1 x disk (No.7) is unused & not needed for either Share.. is this disk part of the Array & can't be used except for a Share ?

 

Can't I stop array 

change the unused disk (No.7) to no device 

Tick the box "Start will disable the missing disk ..."

then disk (No.7) would be Dev 1 (spare) - assignable to what ever I wish

 

I think that I jumped the gun by making disk No.7 active & part of the array

It would have been Dev 1 if I had not ?

 

So as it's not being used for anything can't I just reverse it out ?

Edited by pokes
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2 hours ago, pokes said:

Tick the box "Start will disable the missing disk ..."

then disk (No.7) would be Dev 1 (spare) - assignable to what ever I wish

Not without parity, and if you had parity and did that it would leave you with an unprotected array.

 

2 hours ago, pokes said:

So as it's not being used for anything can't I just reverse it out ?

You can remove it from the array:

5 hours ago, JorgeB said:

You can do a new config, assign that disk as parity and start array to begin the parity sync.

 

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a.jpg.eb0add9fe9336dcc5a936234ed89afc6.jpg

These are the $17 cables - I had them looped, bunched together & cable tied, the wire in them is very thin & not very flexible  

No errors since last night when I took the sides off the case, cut the cable tie & freed them up

SMART short self-test: healthy

 

Would these $50 Startech cables be any better ?  - they look more like standard sata cables 

and a bit more insulated & forgiving, for when I put the sides back on the case

b.jpg.8e962601065fd1dbb078f6973fe46aee.jpg

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Posted (edited)

StarTech Mini-SAS to SATA Cable, 1x SFF-8087 Plug, 4x SATA Female - 50 cm

The SAS8087S450 SFF-8087 to 4x SATA SAS cable features one 36-pin plug (SFF-8087), which fans out to four SATA 7-pin receptacles, providing a reliable solution for connecting up to four SATA HDDs to a SAS controller or backplane

 

The same type as the cheap $17.50 Krysma 50cm / 0.5m Mini-SAS SFF-8087 to 4x SATA Adapter Cable I'm using

Edited by pokes
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Posted (edited)

 

On 4/17/2021 at 5:53 PM, uldise said:

These red ones, are not they reverse breakout?

You know they do look alike & don't seem to specify forward or reverse .. other than "one 36-pin plug .. fans out to four SATA"

 

I'm newish to Unraid so to avoid problems & to make things simple & more reliable .. as I had 2 more 4TB disks, I used 1 of them for Parity 2 & left that Disk No.7 for future data

completed 0 errors  Duration: 9 hours, 41 minutes, 18 seconds. Average speed: 114.7 MB/sec

Edited by pokes
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Posted (edited)

The only problem I had during the several cable swaps & the hard drive install, was after I disconnected power when doing these

the date & time would go wonky mainly minus 12 hours & plus 20 years to 2041 etc ?

To get Unraid back up & running I had to connect a monitor & keyboard to boot

then "press F1 to run setup" & change date & time in bios save / exit

a new motherboard battery next time I open the case?

 

Edited by pokes
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Lost Disk 4 on boot, it was connected to the Krysma's Mini-SAS No.2 sata cable

took side off - it was kinda squashed & bent down 

shut down - changed it to Krysma's (spare) No.1 sata cable (previously used for parity)

reboot - Disk 4 is Okay

 

I have the same Krysma Mini-SAS SFF-8087 ~ LSI SAS 9201-8i setup on a Raid 5 System with no problems

 

 

 

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On 4/18/2021 at 6:44 AM, pokes said:

a new motherboard battery next time I open the case?

That would be a good idea and also check all your BIOS settings.

If the board cannot keep the time, I would not trust it to keep my settings.

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