Theodore Ts'o wrote:
Historically, Intel has been really good about avoiding this, but since they've moved to using 3rd party flash controllers, I now advise everyone who plans to use any flash storage, regardless of the manufacturer, to do their own explicit power fail testing (hitting the reset button is not good enough, you need to kick the power plug out of the wall, or better yet, use a network controlled power switch you so you can repeat the power fail test dozens or hundreds of times for your qualification run) before being using flash storage in a mission critical situation where you care about data integrity after a power fail event.
Speaking of which, what would you use to automate this sort of test? I'm thinking an SSD connected by eSATA, with an external power supply, and the host running inside a VM. Drop power to the drive at the same time as doing a kill -9 on the VM, then you can resume the VM pretty quickly instead of waiting for a full reboot sequence.
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