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July 20th, 2023 13:00

PS4100 The RAID set lost blocks

The device is still working. I replaced a failed drive and I now see the message: The RAID set lost blocks

It is not saying a volume lost blocks but the raid set (RAID 50). 24 10K SAS drives.

I acknowledged the error and do not know what to do next. Is there a way to validate the array? Maybe another drive is going bad (have 2 hot spares and 2 more cold spares).

rsaxer_0-1689886512880.png

Any help is appreciated!


Ron

1 Rookie

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1.5K Posts

July 20th, 2023 16:00

Hello, 

  You are running older firmware.    I was going to suggest you clean the lost blocks, if you had a validated backup.  Just to be safe, during a quiet period you may want to reboot that array.   When it comes back online, reboot it again.  This will  completely restart both controllers. 

  Regards, 

Don 

#iworkfordell

1 Rookie

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1.5K Posts

July 20th, 2023 14:00

Hello, 

  What version of EQL Firmware is that array running? 

  At the GrpName> prompt type:   show member

  When the RAIDset loses blocks that means there was a point where it could not write out data in cache.  

  How did you acknowledge the alert? 

  At the GrpName>  type  support exec "raidtool'

  Copy and paste the outputs here please. 

  If you have SANHQ installed you might want to consider converting to RAID6.   RAID50 being two RAID5's striped together.   A double fault on a single RAID5 set will bring the member down

 If you do have another failing drive it would likely be in the same RAIDset that the first one failed in. 

 Regards, 

Don 

#iworkfordell

 

10 Posts

July 20th, 2023 15:00

Thanks for the help!! I have been floundering around looking for an answer.

I used the GUI and just hit the acknowledge as I recall (been a few weeks)

rsaxer_0-1689893653289.png

Name Status Version Disks Capacity FreeSpace Connections
---------- ------- ---------- ----- ---------- ---------- -----------
XXXX online V8.1.13 (R 24 14.13TB 1.66TB 36
443181)


support exec raidtool
You are running a support command, which is normally restricted to PS Series Tec
hnical Support personnel. Do not use a support command without instruction from
Technical Support.
Driver Status: Ok
RAID LUN 0 Ok.
*!! RAID LUN contains 4 lost blocks. !!*
(raidtool -W 0) clears blocks.
(raidtool -w 0) lists blocks.
10 Drives (12,7,17,9,16,20,0,21,15,11)
RAID 50 (64KB sectPerSU)
Capacity 6,913,394,737,152 bytes
RAID LUN 1 Ok.
12 Drives (13,2,4,19,18,1,10,5,22,3,8,6)
RAID 50 (64KB sectPerSU)
Capacity 8,641,743,421,440 bytes
Available Drives List: 14,23















10 Posts

July 20th, 2023 16:00

support exec raidtool -w0
You are running a support command, which is normally restricted to PS Series Tec
hnical Support personnel. Do not use a support command without instruction from
Technical Support.
Dumping lost blocks
lost block lba: 0x434eaaba
lost block lba: 0x434eaabb
lost block lba: 0x434eabba
lost block lba: 0x434eabbb

10 Posts

July 21st, 2023 10:00

I know the firmware is older, but I could not upgrade to the newer version due to other constraints.

I'll try getting a reboot in (been a long time).

I cleared the blocks and all seems to be ok.

I can't thank you enough for the help you have provided.

1 Rookie

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1.5K Posts

July 21st, 2023 11:00

Hello rsaxer, 

 You are very welcome!  I am so glad I could help you. 

  Take care

  Regards, 

Don

 

#iworkfordell

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