WD Green SN350 1TB sleep-state Linux bug

WD Internal SSD WD_BLACK | Blue | Red | Green | Gold SSD
1

Dears,

I would like to remind this long-running issue affecting many SSD drives’ power-states on Linux and the particular case of the WD Green SN350 1TB.

Symptom: Device’s apparent disconnection leading to remout-ro (and possible filesystem corruptions)

nvme 0000:04:00.0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0x10

Affected devices: SN350 at its latest (and unique) firmware version: 33006000

Reason: nvme switch to p4 power-state (in a non-standard/buggy/… way)

Culprit: WD for not providing an updated firmware ensuring compatible sleeping-mode.

Workaround: Disable the p4 power-state.

HowTo: nvme_core.default_ps_max_latency_us=11500

Device power-state details:

$ nvme id-ctrl /dev/nvme0
vid       : 0x15b7
ssvid     : 0x15b7
sn        : 22292H......       
mn        : WD Green SN350 1TB                      
fr        : 33006000
[...]
ps    0 : mp:5.00W operational enlat:0 exlat:0 rrt:0 rrl:0
          rwt:0 rwl:0 idle_power:0.6300W active_power:5.00W
ps    1 : mp:2.40W operational enlat:0 exlat:0 rrt:0 rrl:0
          rwt:0 rwl:0 idle_power:0.6300W active_power:2.40W
ps    2 : mp:1.90W operational enlat:0 exlat:0 rrt:0 rrl:0
          rwt:0 rwl:0 idle_power:0.6300W active_power:1.90W
ps    3 : mp:0.0250W non-operational enlat:3900 exlat:11000 rrt:3 rrl:3
          rwt:3 rwl:3 idle_power:0.0250W active_power:-
ps    4 : mp:0.0050W non-operational enlat:5000 exlat:39000 rrt:4 rrl:4
          rwt:4 rwl:4 idle_power:0.0050W active_power:-

What is desirable: A firmware update from WD to fix this problem.

2

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