On 9/11/23 15:36, Alexander Kanavin wrote:
On Mon, 11 Sept 2023 at 06:22, Chen Qi via lists.yoctoproject.org
<[email protected]> wrote:
SSTATE_DIR and DL_DIR are writable. Sharing them among different builds
owned/controlled by the same user is OK, but sharing these writable
directories among different users does not seem to be a good idea.
You could consider using the PREMIRRORS and SSTATE_MIRRORS.
This is not accurate. SSTATE_DIR is designed to be shared in a
read-write fashion via NFS or other over the network filesystem
(between users on the same machine is also ok), and is heavily used
that way in Yocto CI.
This is the case I referred to as 'different builds owned/controlled by
the same user'.
Say, you share the SSTATE_DIR used by Yocto CI to many people via NFS.
Then, a 'rm -rf' might be typed by someone by accident, maybe just
because of lack of coffee.
Regards,
Qi
Sharing DL_DIR is less important as it is not that large, and
downloading does not slow down the builds that much compared to the
the actual build (and only needs to happen once).
Li, your understanding is more or less completely correct. The
difficulties are mostly in scaling up, where you might hit the limits
of how many users can be served at the same time.
Alex
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