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Disk redundancy failed error and wrong SAS speed in a disk bay

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Category:
fas-systems
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hw
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Applies to

Internal shelf in controller chassis

Issue

  • Disk bypassed by one path.
  • Storage Fault Show example: 
Enclosure Status: non-critical
Channel: 0a
Shelf: 0
Shelf Type: DS212-12
Product Serial Number: SHFHU0123456789
Module Type: IOM12E
Disk Elements:
Element Status Status Bytes Status Descriptions
0 [Bay 0]: OK 01,00,00,00
1 [Bay 1]: OK 01,01,00,00
2 [Bay 2]: OK 01,02,00,00
3 [Bay 3]: OK 01,03,00,00
4 [Bay 4]: NONCRITICAL 03,04,10,04 ENCLOSURE BYPASSED B, BYPASSED B
  • Missing disk 0b.00.4:

*> disk_list
     DISK    CHAN  VENDOR   PRODUCT ID       REV  SERIAL#              HW (BLOCKS   BPS) DQ
------------ ----- -------- ---------------- ---- -------------------- -- -------------- --
0b.00.3       SA:B NETAPP   X336_TTCRE04TA07 NA03 012345678910         ff 7814037168  520  N
0b.00.7       SA:B NETAPP   X336_TTCRE04TA07 NA03 012345678911         ff 7814037168  520  N
...

  • A reseat/replace doesn't fix the issue:

Mon Feb 01 23:01:05 +0100 [node_name: dmgr_thread: raid.disk.inserted:info]: Disk 0a.00.4 Shelf 0 Bay 4 [NETAPP   X336_SMBPE04TA07 NA00] S/N [01234567] UID [5000C500:B716BB57:00000000:00000000:00000000:00000000:00000000:00000000:00000000:00000000] has been inserted into the system
Tue Feb 02 14:34:30 +0100 [node_name: dsa_worker0: ds.sas.drivephy.disableErr:error]: Disk  [NETAPP  :X336_HAKPE04TA07:NA00] S/N [01234567]  on channels 0b shelf ID 0 IOM B bay 4 disabled due to excessive invalid dword error.

  • Disk shows invalid words in that path:

Shelf name:    0b.shelf0
Shelf id:      0
Channel:       0b
Module:        B
Shelf UID:     50:aa:a:aa:aa:aa:aa:aa
Shelf S/N:     SHFHU0123456789
Term switch:   N/A
Shelf state:   ONLINE
Module state:  OK

               Partial Path   Link    Invalid   Running     Loss    Phy       CRC     Phy
Disk    Port   Timeout        Rate     DWord    Disparity   Dword   Reset     Error   Change
Id     State   Value (ms)    (Gb/s)    Count    Count       Count   Problem   Count   Count
--------------------------------------------------------------------------------------------
...
[  4 ] DIS/INVWD      7         NA     1454        1175       0        0         0       5

  • The speed in that bay is wrong:

Shelf name:    0a.shelf0
Shelf id:      0
Channel:       0a
Module:        B
Shelf UID:     50:aa:aa:aa:aa:aa:aa:aa
Shelf S/N:     SHFHU0123456789
Term switch:   N/A
Shelf state:   ONLINE
Module state:  OK

               Partial Path   Link    Invalid   Running     Loss    Phy       CRC     Phy
Disk    Port   Timeout        Rate     DWord    Disparity   Dword   Reset     Error   Change
Id     State   Value (ms)    (Gb/s)    Count    Count       Count   Problem   Count   Count
--------------------------------------------------------------------------------------------
...
[  3 ] OK             7       12.0        0           0       0        0         0       1
[  4 ] OK             7        1.5        0           0       0        0         0       6
[  5 ] OK             7       12.0        0           0       0        0         0       1
...

 

 
 
 
 
 

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