Indeed, for now the solution will have to be to disable zram before
installing for LVM2 with crypto.
So; for zram, I think the solution will be "involved". Not overly
complex, but I think it needs a small rework of seeds. zram is
compressed, not encrypted. It would be downright wrong to ignore zram
devices when checking that swap is safe when dealing with encrypted
disks. One option is to allow users to decide whether it's fine, but
that seems like pointing them in a direction that might not be in their
best interest -- it's not obvious enough this way that we look whether
swap is safe for a good reason: if you keep unencrypted swap enabled,
you still have unencrypted data in memory that may contain the data
you're trying to secure with disk encryption.
The other option would be to install zram later, once we know the system
is not going to be installed with crypto. To get that, we'd need to move
zram-config from live-share to ship-live-share so it still exists on the
CD, but in the pool/ directory rather than as a part of the live image;
and add some code in ubiquity to that if you install without crypto, for
lubuntu it would install zram-config.
You wouldn't have the error if the live image didn't have zram-config in
the first place. In fact, I think having zram-config in live potentially
slows things down -- if you're in the live session, you're already
running in memory and not swapping to disk (the point of the live image
is not to change the local disk), so having zram only seems to me to be
adding compression overhead.
Late install of zram-config probably ought to be done somewhat like for
language packs, so in scripts/plugininstall.py for instance, possibly
install_extras() with the appropriate guards to install on Lubuntu, and
only if LVM2-crypto was not the partitioning mode.
** Changed in: ubiquity (Ubuntu)
Status: Confirmed => Triaged
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1205397
Title:
encrypted install fails because unsafe swap (zram) is detected
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1205397/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
