Re: Securely formatting BTRFS off topic

Am 26.10.23 um 08:42 schrieb Andrei Borzenkov:

On Wed, Oct 25, 2023 at 9:58 PM Carlos E. R. wrote:

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On 2023-10-25 20:47, Aaron Digulla wrote:

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Am 25.10.23 um 17:42 schrieb Simon Becherer:

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Am 25.10.23 um 16:42 schrieb Aaron Digulla:

With SSDs, the controller remembers how often each block was written to. When you write new data, it will find a free block with the least usage and write the data there and remember "I saved the data for block 15 in the real memory address 0x... + increment the usage counter; the old real memory is now in the free pool". That way, every memory block will get roughly the same number of writes, even if you write block 15 a million times.

Do you know where that metadata is stored?

And it matters exactly how?

because maybe he did not like to die as a stupid person and is interested in how it works. i am also, i do like to know things, often regardless of the actual situation. i do not like "black boxes" so this question is in my opinion what physical hardware is used for this part of storing data who will change very often. simoN -- www.becherer.de