August 9, 20241 yr Hello I woke up this morning with an email from the unraid tower : Event: Unraid Parity disk error Subject: Alert [FORTRESS] - Parity disk in error state (disk dsbl) Description: WDC_WD60EFAX-68JH4N1_WD-WX42D51N5925 (sdg) Importance: alert Parity disk - WDC_WD60EFAX-68JH4N1_WD-WX42D51N5925 (sdg) (errors 2048) The SMART report of this disk is light : smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.1.79-Unraid] (local build) Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org Smartctl open device: /dev/sdg failed: No such device And I can not show the SMART error log as there is nothing to show: I can't start a SMART extended self-test. I haven't tested the sata connections yet, but I'll do that tonight. If you have any tips, I'd love to hear from you. Thanks for your help fortress-diagnostics-20240809-0830.zip fortress-smart-20240809-0827.zip
August 9, 20241 yr Community Expert The fact you cannot get a SMART report means that the drive dropped offline for some reason. The syslog shows what look like connection errors before you then started getting write errors. I would carefully check cabling (both power and SATA) to that drive. You then will need to reboot (and possibly do a full power cycle) to see if you can get the drive back online to be able to check its SMART report.
August 9, 20241 yr Author Dumb question : What do you mean by "Full Power Cycle"? Does the GUI Shutdown button perform a Full Power Cycle? If I need to change the SATA cables, I'm planning to shut down the server anyway.
August 9, 20241 yr 4 hours ago, JUST-Plex said: Does the GUI Shutdown button perform a Full Power Cycle? That's probably enough, but to be sure after the machine shuts down, I'd turn off the PSU if it has a switch, or pull the cord, then push the power button to drain the motherboard capacitors. A full power cycle is when everything is totally shut down and started from scratch, as opposed to just a restart or reboot. Sometimes parts need to be taken totally offline to get going again, they can get hung in a state where just a reboot doesn't do it.
August 9, 20241 yr Community Expert 5 hours ago, JUST-Plex said: What do you mean by "Full Power Cycle"? Power the server off and then on again.
August 10, 20241 yr Author After a full power cycle and verifying all connectivity, I have acces to SMART log and a full SMART test is successfull but the disk is still in error state. How can I recover this disk in a proper state?
August 10, 20241 yr Community Expert Solution SMART looks fine, check/replace cables to rule that out and re-sync parity: https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itself
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