On Wed, Mar 1, 2023 at 12:10 PM Robert Schweikert <[email protected]> wrote: > > Hi, > > On 3/1/23 09:08, Neal Gompa wrote: > > On Wed, Mar 1, 2023 at 9:05 AM Robert Schweikert <[email protected]> wrote: > >> > >> Hi, > >> > >> At present cloud-init stores data in /var/lib/cloud. For systems with > >> transactional-updates, i.e. opensuse-microos and other incarnations this > >> location becomes read-only. > >> > >> Would it be OK to send a PR that moves the data to /var/cache/cloud ? > >> > >> I'd prefer a wholesale move of the data over various if conditions and > >> checks whether or not /var/lib is writable. Also we'd know that as of > >> version X of cloud-init the data has been moved. > >> > >> Basic idea is > >> > >> if no os.exists('/var/cache/cloud'): > >> create_it > >> if os.exists('/var/lib/cloud'): > >> move_the_existing_data_to_new_location > >> > >> Do the above early enough in the process such that for all other > >> locations in the code that access the data the change in location is > >> transparent. > >> > >> Thoughts? > > > > That doesn't make any sense. openSUSE systems are explicitly supposed > > to omit /var from the read-only root. That's why the RPM and DNF > > databases were moved to /usr years ago. The whole point of /var is for > > system specific data. It is supposed to be always writable. > > > > Yes of course, I have too many things going on and wasn't paying > attention. Thanks for pointing it out. > > The move is necessary to preserve the data between snapshots/reboots in > a transactional-update system. > > /var/lib is discarded between reboots the data in /var/cache is > available after reboot into the new snapshot. Meaning if the cloud-init > data is not moved then it always looks like a new instance is being booted. >
That sounds like a flaw in transactional-update. As a user, I would be very surprised to see persistent data being thrown away. I would expect /var/cache to be emptied, but not /var/lib. I think you need to go back and fix that instead. -- 真実はいつも一つ！/ Always, there's only one truth! -- Mailing list: https://launchpad.net/~cloud-init Post to : [email protected] Unsubscribe : https://launchpad.net/~cloud-init More help : https://help.launchpad.net/ListHelp
