2 Drives in Array are changed the disk identification and showing as errors


NetPlex

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Hi,

 

Can any one help me?. Suddenly my server shown as disk disabled and the same disk (sdn) is shown in Unassigned with different Name (sds).

 

I just restarted the server then it shows as 2 disks missing and both shown in unassigned.  I did new config and assigned the devices as before (Parity drives) and data disks. Now its says errors on the 2 disks .

 

Can some one help me why it happened. 

 

image.thumb.png.c6d777ef622ec30204acf12579fcb69f.pngimage.thumb.png.d8309e398a14c29ab361b720dbcfe556.png

netplex-diagnostics-20220921-1628.zip

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Looks more like a power/connection issue:

 

Sep 21 16:26:33 NetPlex kernel: pm80xx0:: mpi_sata_completion  2455:IO failed device_id 18439 status 0xf tag 95
Sep 21 16:26:33 NetPlex kernel: pm80xx0:: mpi_sata_completion  2490:SAS Address of IO Failure Drive:50000d1109b27a9e
Sep 21 16:26:33 NetPlex kernel: sas: sas_to_ata_err: Saw error 135.  What to do?

 

But not familiar with these controllers and their errors.

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What is the correct way to deal with a disk removed from the array after a reboot?

As you can see from the attached images showing the array list before and after reboot. 

 

Disk 3 was removed and all the drive letters have changed although the remaining disks seem to be in the same order.

 

How to i get the disk back into the array with out loosing the data on the disk that was removed from the array (disk 3)?

 

-----------------

I restarted the server as i removed a plug-in "CA Dynamix Unlimited Width" and I removed a disk that failed pre clearing.

 

array before.png

array after.png

 

Edited by wow001
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If i start the array with the missing disk i get the message the "All existing data on this device will be OVERWRITTEN when array is Started"

as per the attached image.

 

So the steps are:

1. Add the missing disk back to location disk 3 and start the array,

2. The data on disk 3 is overwritten/wiped.

3. Unraid rebuilds the data on disk 3 from the two Parity disks.?

 

 

 

Screenshot 2022-09-22 at 13.25.29.png

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Now stop the array, re-assign disk3 and start the array to begin rebuilding, during the rebuild monitor the log for any disk related errors, similar to these:

 

Sep 22 14:12:46 wowserver02 kernel: sd 18:0:4:0: attempting task abort!scmd(0x00000000b2e31524), outstanding for 15103 ms & timeout 15000 ms
Sep 22 14:12:46 wowserver02 kernel: sd 18:0:4:0: [sdm] tag#7355 CDB: opcode=0x85 85 06 20 00 00 00 00 00 00 00 00 00 00 40 e5 00
Sep 22 14:12:46 wowserver02 kernel: scsi target18:0:4: handle(0x000d), sas_address(0x4433221105000000), phy(5)
Sep 22 14:12:46 wowserver02 kernel: scsi target18:0:4: enclosure logical id(0x500605b00b101dd0), slot(6)
Sep 22 14:12:46 wowserver02 kernel: scsi target18:0:4: enclosure level(0x0000), connector name(     )
Sep 22 14:12:48 wowserver02 kernel: sd 18:0:4:0: [sdm] tag#3975 UNKNOWN(0x2003) Result: hostbyte=0x0b driverbyte=DRIVER_OK cmd_age=18s
Sep 22 14:12:48 wowserver02 kernel: sd 18:0:4:0: [sdm] tag#3975 CDB: opcode=0x88 88 00 00 00 00 03 a3 81 2a 78 00 00 00 08 00 00
Sep 22 14:12:48 wowserver02 kernel: I/O error, dev sdm, sector 15628053112 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Sep 22 14:12:48 wowserver02 kernel: sd 18:0:4:0: task abort: SUCCESS scmd(0x00000000b2e31524)
Sep 22 14:12:49 wowserver02 kernel: sd 18:0:4:0: Power-on or device reset occurred

 

If you see them there are still issues, probably power/connection related.

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