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NetApp Knowledge Base

Storage device has entered a permanent device loss (PDL) state

Last Updated:

Applies to

  • CDOT 9.x
  • ESXi 5.x
  • ONTAP 8.3
  • ONTAP 9
  • ONTAP 9.1
  • ONTAP 9.2
  • ONTAP 9.3
  • ONTAP 9.4


ESXi marks the device as not connected and a warning about the device being permanently unavailable appears in the VMkernel log file.

In the /var/log/vmkernel.log file, you see entries similar to:

cpu2:833571)VEM_STAP_ALAL: stap_alal_issueCommandOnPath:661: Path "vmaab4:C0:T0:L0" (PERM LOSS) command 0xa3 failed with status Device is permanently unavailable. H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x25 0x0.
cpu2:853571)WARNING: vrm_sps_rr: sps_rrSelectPathToActivate:972:Could not select path for device "nan.50a98000472d54724a34442a72322733".
cpu2:853571)WARNING: ScsiDevice: 1223: Device :naa.60a98000572d54724a34642d71325763 has been removed or is permanently inaccessible.
cpu3:2132)ScsiDeviceIO: 2288: Cmd(0x4124403c1fc0) 0x9e, CmdSN 0xec86 to dev "nan.50a98000472d54724a34442a72322733" failed H:0x8 D:0x0 P:0x0
cpu3:2132)WARNING: NMP: nmp_DeviceStartLoop:721:NMP Device "nan.50a98000472d54724a34442a72322733" is blocked. Not starting I/O from device.
cpu2:2127)ScsiDeviceIO: 2316: Cmd(0x4124403c1fc0) 0x25, CmdSN 0xecab to dev "nan.50a98000472d54724a34442a72322733" failed H:0x1 D:0x0 P:0x0 Possible sense data: 0x5 0x25 0x0.
cpu2:854568)WARNING: ScsiDeviceIO: 7330: READ CAPACITY on device "nan.50a98000472d54724a34442a72322733" from Plugin "NMP" failed. I/O error
cpu2:854568)ScsiDevice: 1238: Permanently inaccessible device :nan.50a98000472d54724a34442a72322733 has no more open connections. It is now safe to unmount datastores (if any) and delete the device.
cpu3:854577)WARNING: NMP: nmpDeviceAttemptFailover:562:Retry world restore device "nan.50a98000472d54724a34442a72322733" - no more commands to retry.


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