Any way to restore or fast reinstall an installed flatpak?

[Alexander Larsson]

On Thu, Apr 5, 2018 at 4:08 PM, Alexander Larsson <alexl at redhat.com> wrote:
> On Thu, Apr 5, 2018 at 3:03 PM, Robin Lee <robinlee.sysu at gmail.com> wrote:
>> $ ostree fsck --repo=$HOME/.local/share/flatpak/repo --delete
>> Validating refs...
>> Enumerating objects...
>> Verifying content integrity of 16 commit objects...
>>
>> fsck objects (48647/72169) [========     ]  67%fsck content object
>> b5eeec19a429c594e684f64c1bc84f717b9b6596e3f75fc8197421d94f560c61:
>> Corrupted file object; checksum
>> expected='b5eeec19a429c594e684f64c1bc84f717b9b6596e3f75fc8197421d94f560c61'
>> actual='b7431d71c722e8edb2f4f11b1603ebcfa281e7a598757fa7631355a40fbac986'
>> fsck objects (72169/72169) [=============] 100%
>> 6 partial commits not verified
>> error: Repository corruption encountered
>>
>> After running this, runtime reinstall will fail:
>>
>> $ flatpak --user install  flathub org.freedesktop.Sdk/x86_64/1.6
>> Installing for user: org.freedesktop.Sdk/x86_64/1.6 from flathub
>> [####################] 1 metadata, 0 content objects fetched; 569 B
>> transferred in 6 seconds
>> error: While trying to checkout
>> 07b0e89b0f6c4f72bbeb101f89d5c16ffab2a1f3d2e317b5ecc2adf8ead585ba into
>> /home/cheese/.local/share/flatpak/runtime/org.freedesktop.Sdk/x86_64/1.6/.07b0e89b0f6c4f72bbeb101f89d5c16ffab2a1f3d2e317b5ecc2adf8ead585ba-68YTGZ:
>> Couldn't find file object
>> 'b5eeec19a429c594e684f64c1bc84f717b9b6596e3f75fc8197421d94f560c61'
>>
>> So the file is still not recovered.
>
> Hmm, this is the object that was corrupt and deleted above, so its not
> unexpected that it is not ther. But I'm not sure why it was not pulled
> when you reinstalled...
>
> o> By the way, shall flatpak prevents apps from modifying files under /etc?
>
> For technical reasons /etc is a tmpfs, so you can write to it but all
> the files from the runtime that are in there are not writable.

Actually i know why this is happening. When we pull the new commit as
long as there is a commit or a directory locally available in the repo
it assumes all the objects it references are there.

Can you try to create an empty file called
~/.local/share/flatpak/repo/state/07b0e89b0f6c4f72bbeb101f89d5c16ffab2a1f3d2e317b5ecc2adf8ead585ba.commitpartial

And then:

flatpak --user install --reinstall flathub org.freedesktop.Sdk/x86_64/1.6

Colin: Maybe we should add a flag to ostree pull that assumes all
commits are partial, for this kind of "repo repair" operations? I.e.
to repair a repo we could do ostree fsck --delete, and then re-pull
all refs with this flag.



-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Alexander Larsson                                Red Hat, Inc
       alexl at redhat.com         alexander.larsson at gmail.com