On Wed, Feb 21, 2024 at 05:15:55PM +0100, Jörg-Volker Peetz wrote: > Henning Follmann wrote on 21/02/2024 14:16: > > On Wed, Feb 21, 2024 at 12:00:17PM +0100, Jörg-Volker Peetz wrote: > <snip> > > > Somewhere I read, for maintainance of an SSD all it's cells should be read > > > from time to time like this > > > > > > sudo dd if=/dev/DEVICE of=/dev/null bs=8M status=progress > > > > Where did you read that? That seems like a huge waste of time. > > > As far as I remember, the idea behind this suggestion is to help the SSD > firmware detect bad blocks or cells early on and to mask them out. Of > course, a good firmware with it's wear leveling algorithm > (https://en.wikipedia.org/wiki/Wear_leveling) should do this by itself.
Actually... you only have to read regularly those blocks which are known to have stuff in them. The file system should know which those are, that's its job. And then, this is a backup, at least in my book, and yes, you should do that regularly, even on spinning rust ;-) Cheers -- t
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