I didn't find a feedback form in the docs so I've decided to create this thread.
In the https://pbs.proxmox.com/docs/technical-overview.html#chunks there is such text:
Aiui, a342 are not 4 bytes because they are not 4 regular (8-bit) characters; they are 4 hexadecimal digits. Thus, a342 is only 2 bytes.
If you asked me, "first four bytes" should be changed to "first two bytes (represented by four hexadecimal digits)", but that looks kinda clumsy.
In the https://pbs.proxmox.com/docs/technical-overview.html#chunks there is such text:
Code:
This chunk directory is further subdivided by the first four bytes of the chunk's checksum, so a chunk with the checksum
a342e8151cbf439ce65f3df696b54c67a114982cc0aa751f2852c2f7acc19a8b
lives in
<datastore-root>/.chunks/a342/Aiui, a342 are not 4 bytes because they are not 4 regular (8-bit) characters; they are 4 hexadecimal digits. Thus, a342 is only 2 bytes.
If you asked me, "first four bytes" should be changed to "first two bytes (represented by four hexadecimal digits)", but that looks kinda clumsy.
It's ASCII encoded hexadecimal representation of the binary hash, especially the prefix as it becomes a directory name is then 4 ASCII chars. Anyhow, there's BZ [1] with Documentation category for this exactly.