Public SourceMage Discussion List

[Eric Sandall <eric AT sandall.us>]

    On 8/31/20 09:03, Thomas Orgis wrote:
> Aloha,
>
> I am still not giving up, perhaps only to entertain ar on IRC. I just
> pushed a change that might be controversial and wrong, so I announce
> it here. Commit f9349ce4743d31082f18b193174d35089fce69b3 adds a patch
> to installwatch that drops a set of read-only functions from it.
>
> The reason is twofold:
>
> 1. My installation is seriously damaged and misses some sorcery state
> that causes castfs installs to stumble and fail upon existing files of
> the spell which is not recorded as installed and hence not deinstalled
> before writing new stuff.*
>
> 2. Switching to installwatch instead of castfs works as such, but gets
> stuck in a deadlock while installing rust. Rust contains jemalloc,
> which calls readlink() during intialization. That prompted
> installwatch, which then tried to allocate some memory in a libc call …
> which then went into jemalloc, which is waiting for its initialization
> … nasty.
>
> So installwatch is wrapping less now. Anyone got an issue with that?
> The list of installed files still seems to be captured just fine.
>
> Maybe we want to make a new tarball for installwatch instead of
> collecting patches. Even if there is an overlayfs replacement for
> castfs, I think we need a lightweight fallback like installwatch, or
> maybe even just something based on strace -ff.
>
>
> Alrighty then,
>
> Thomas
>
>
> * Needless to say, I'd consider it much saner to _not_ delete the old
>   files before writing the new ones, for a smoother transition where
>   there is minimal time window of libraries missing. Of course, there
>   is still different breakage possible with inconsistent states. We'd
>   need atomic changesets in the root filesystem.
>
>     
    
    Thank you for working on this Thomas. :) I've had to set
    STAGED_INSTALL="off" to some spells to work around our older castfs,
    which usually works great, but not always.
    
    -sandalle

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