[gpfsug-discuss] replacing a "missing" disk

[Wahl, Edward]

I've run into this a few times, especially drives like SSDs just vanishing and going "missing".  No amount of physical work will help those.
Normally just '--simulate-fail' is enough to kick the disk hospital into getting the erase code rebuild rolling.   But with a few disks I've had to use --simulate-fail and --simulate-dead BOTH, and that was what it took to get an SSD to prep.

The worst part here is that since the drive is 'missing' you cannot just rely on 'replace' to kick things off for you, as '--prepare' will NOT allow you to swap the drive at LEAST until the simulate-fail gets rolling.

Ed Wahl
Ohio Supercomputer Center

-----Original Message-----
From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> On Behalf Of Ruffner, Scott (jpr9c)
Sent: Monday, July 17, 2023 2:13 PM
To: gpfsug-discuss at gpfsug.org
Subject: [gpfsug-discuss] replacing a "missing" disk

I've got a couple of disks which were failing/draining and never completed this stage, and now simply report as missing after a revive and then resume. I've also reseated the drive, but no blinking lights, so I'm thinking it's dead. Can one force a drain? What's the procedure for a drive lost when it's altogether dead?

TIA

Scott Ruffner
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