openSUSE admin

Machine is no longer maintained by openSUSE Heroes, re-assigning to Build team.

Hi,

This is tricky because internally openSUSE-Leap-15.4-DVD-x86_64-Media.iso is a symlink to a particular file, e.g. currently openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso

However, theoretically, the destination can change at any moment, which might create confusion during troubleshooting. (Well, maybe not for 15.4 anymore, but it is still the case for 15.5 and 15.6.)

Moreover, download.opensuse.org doesn't usually serve files directly but tries to redirect a mirror closest to the request origin. On that mirror, the symlink might point to, e.g., an old Build, which might create even more confusion.

Thus it is much more transparent if the request is redirected to a particular Build, and further, it is redirected to a mirror, which has that exact Build.

Now the valid question is what should be inside the .sha256 file. There is no silver bullet because the server doesn't know which name will be chosen by the client program. For E.g. in your example, wget saves the file without Build, so the checksum program should succeed.

If the client program really chooses destination name from redirect (e.g. flag --content-disposition for wget), then it is better to use it with Current suffix instead of Media, e.g. openSUSE-Leap-15.4-DVD-x86_64-Current.iso.sha256 . It will redirect to the file which contains the name with Build, e.g.

> wget --content-disposition http://download.opensuse.org/distribution/leap/15.4/iso/openSUSE-Leap-15.4-DVD-x86_64-Current.iso.sha256
...
2024-10-24 15:53:45 (21.2 MB/s) - ‘openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso.sha256’ saved [117/117]

> cat openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso.sha256
4683345f242397c7fd7d89a50731a120ffd60a24460e21d2634e783b3c169695  openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso

I agree that this is a bit cumbersome behavior, so will assign the ticket to the openSUSE Release Manager, so he defines how behavior should look when user requests to download these files:

openSUSE-Leap-15.4-DVD-x86_64-Media.iso          : currently redirects to a mirror containing openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso
openSUSE-Leap-15.4-DVD-x86_64-Media.iso.sha256   : currently renders file without Build in it (i.e. openSUSE-Leap-15.4-DVD-x86_64-Media.iso)
openSUSE-Leap-15.4-DVD-x86_64-Current.iso        : currently redirects to a mirror containing openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso
openSUSE-Leap-15.4-DVD-x86_64-Current.iso.sha256 : currently renders file with Build in it    (i.e. openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso)