[xubuntu-users] Swap not active

[Petter Adsen]

On Tue, 19 May 2015 18:19:55 -0400
Rog <linux.rog at gmail.com> wrote:

> I tried Puny Geek's method (ref: below), creating the missing resume
> file after mkswap. While the process seemed go to a successful
> completion, /swap was gone after reboot. Not to mention, the
> partition with /swap on it could no longer be "activated." I had to
> delete and recreate the /swap partition. At this point, as discussed
> previously, I'm ready to opt-out of an encrypted /swap but how do I
> get rid of the traces of encrypted swap and the associated error
> message at boot?

I had a similar problem to yours, and solved it by switching from UUID
to /dev/disk/by-id/... in /etc/crypttab - you could try that and see if
it works for you also.

> (Oh, I know: this is a top post but you can always scroll down!)

That is not the point.

Petter

> On 05/19/2015 04:23 PM, Rog wrote:
> > On 05/19/2015 04:01 AM, Marcos Almeida Azevedo wrote:
> >>
> >>
> >> On Wed, May 6, 2015 at 9:25 AM, Rog <linux.rog at gmail.com 
> >> <mailto:linux.rog at gmail.com>> wrote:
> >>
> >>     On 05/05/2015 09:18 PM, Marcos Almeida Azevedo wrote:
> >>>
> >>>
> >>>     On Wed, May 6, 2015 at 6:39 AM, Rog <linux.rog at gmail.com
> >>>     <mailto:linux.rog at gmail.com>> wrote:
> >>>
> >>>         When I boot, I see, "The device mapper
> >>> for /dev/mapper/cryptswap1 is not ready or not present. Continue
> >>> to wait, or Press S to skip mounting or M for manual recovery.
> >>>
> >>>         Waiting has no apparent effect; M does nothing.
> >>>
> >>>         Gnome-system-monitor shows swap as not available.
> >>> Gnome-disk utility shows the partition as inactive and when I
> >>> Activate it, the swap status changes immediately to available.
> >>>
> >>>         After a reboot, I get the same message at boot, swap is
> >>> not available and is not active, according to Gnome-disk.
> >>>
> >>>         I'm running Xubuntu 14.04 and updates are current. But,
> >>> I've seen the same message at boot on another PC running Xubuntu
> >>> 12.04.
> >>>
> >>>         Luckily, Linux manages memory memory quite well so swap
> >>> is seldom called into action, and, I don't hibernate - just
> >>> suspend or shutdown.
> >>>
> >>>         Solution?
> >>>
> >>>
> >>>     You may try this guide:
> >>>     http://punygeek.blogspot.com/2012/10/ubuntu-1204-how-to-solve-disk-drive-for.html
> >>>     It's for 12.04 but it might still work
> >>     Thanks, Marcos: I'll give that a try in a couple of days . . .
> >> I'll be tied-up until Thursday p.m.
> >>
> >>
> >> Did it work?
> > Marcos: did not work. I tried it last night. I did a little more
> > research and found this is very likely related to a bug, 
> > https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1153661
> >
> > In short, it appears to have been around since ver. 12.04 with
> > various attempts to cope with little success.
> >
> > In the short-term, it appears to me that the best solution is to
> > dump encryption of /swap and go with a non-encrypted swap. BUT, I
> > don't know how to do that!
> >
> > More comments:
> >
> > The encryption of /swap appears to be a byproduct of opting to
> > encrypt /home during install of Xubuntu. This happened without my
> > explicit invoking this option during install on two different
> > systems.
> >
> > As noted by others, the UUID for encrypted swap is not correctly
> > identified in /etc/crypttab as well as in /etc/fstab.
> >
> > Some suggest that the error is related to having installed from a
> > thumb drive, which is what I did.
> >
> > Puny Geek suggests updating /etc/initramfs-tools/conf.d/resume.
> > That file does NOT exist on my 14.04 install.
> >
> > As others have noticed, some fixes work for a current session but
> > don't survive a re-boot. I had this experience by "activating"
> > the /swap partition with the Disk Utility, previously known as
> > "palimpsest" under 12.04.
> >
> > I concluded that, since this bug has been long-standing and others
> > have not been successful in fixing it or having a lasting
> > work-around, I'm not likely to be successful either. Hence the
> > conclusion of living without it being encrypted is a nice work
> > around. I encrypt /home on my portable devices to protect personal
> > info if it is stolen. My guess is that it's unlikely for
> > unencrypted info to be compromised because it's unlikely to sit
> > in /swap and be read by a nefarious operator.
> >
> > Thanks to all who thought about this.
> >
> > Other, related links:
> > http://askubuntu.com/questions/505880/message-disk-drive-for-dev-mapper-cryptswap1-is-not-ready-yet-or-not-present-ev
> >
> > Oh: here's one I did not try: treating this as a timing error (also 
> > discussed elsewhere)
> > http://ubuntuforums.org/showthread.php?t=2164313
> >
> > Other thoughts:
> > Try creating /etc/initramfs-tools/conf.d/resume with the correct
> > UUID and go through Puny Geek's approach.
> > Hope for a solution in response to bug report.
> >
> > p.s. All of this fiddling around is what I anticipated when
> > attempting a solution and why I put it off!
> >
> > /Roger
> 



-- 
"I'm ionized"
"Are you sure?"
"I'm positive."
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