If you seed a snap, then you also need to seed that snap's base, and
snaps providing any plugs that snap requires, otherwise it'll fail to
seed.
A failure to seed it pretty bad, as snapd will be stuck in a loop trying
to do that. I don't think this is a bug in snapd, because if you have
network,
** Changed in: oem-priority
Importance: Undecided => Critical
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Title:
Live 18.04 with persistence snapd high CPU usage
To manage
it looks like the seed is missing gtk-common-themes
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Title:
Live 18.04 with persistence snapd high CPU usage
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** Changed in: oem-priority
Assignee: (unassigned) => Chen-Han Hsiao (Stanley) (swem)
** Changed in: oem-priority
Status: New => Confirmed
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Note that this issue doesn't happen with official released image
ubuntu-18.04-desktop-amd64.iso.
But does happen with daily build image http://cdimage.ubuntu.com/bionic
/daily-live/pending/bionic-desktop-amd64.iso (For example, 20180508)
I think this issue is introduced between 2018-04-24 and
output of "snap tasks --last=seed"
This issue could be reproduced on every platform.
** Attachment added: "snap-tasks-seed.txt"
https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1767896/+attachment/5136966/+files/snap-tasks-seed.txt
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** Also affects: oem-priority
Importance: Undecided
Status: New
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Title:
Live 18.04 with persistence snapd high CPU usage
To manage
That's very interesting!
Could you paste the output of "snap tasks --last=seed" ?
Thank you.
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Title:
Live 18.04 with persistence snapd high CPU
After finishing the installation and reboot, this issue could be observed
before connecting to internet. snapd restarts again and again and consuming
high percentage of cpu.
(Daily Build image: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64
(20180508)%)
May 9 06:40:11 u-XPS-13-9360
seeded snap in Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64
(20180508)%
$ ll /var/lib/snapd/seed/snaps/
total 273560
drwxr-xr-x 2 root root 4096 May 8 04:23 ./
drwxr-xr-x 4 root root 4096 May 8 04:23 ../
-rw-r--r-- 2 root root 90828800 May 8 04:22 core_4571.snap
-rw-r--r-- 2
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: snapd (Ubuntu)
Status: New => Confirmed
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Title:
** Changed in: snapd (Ubuntu)
Status: Incomplete => New
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Title:
Live 18.04 with persistence snapd high CPU usage
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I see that this but report is "incomplete". In case it's waiting on the
snap version it's 2.32.5.
Since I still don't really know what it is or how to use it, I have to
presume there have been no changes. (I find lots of docs on the
interwebs but nothing so far that takes me back to the
*bug* report ;)
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Title:
Live 18.04 with persistence snapd high CPU usage
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I've verified that this can be reproduced when booted from a flash
drive. As above: extract the 18.04 ISO to a FAT32 drive. UEFI boot it.
Create a persistence file and a persistence boot stanza. Boot that.
snapd and Xorg will use lots of CPU. Perhaps not as consistently or as
high as when
It is a nice machine :) This one was signed by David Hill, so it's a
real treasure :)
I can try to dig up the info you requested, but first I have to state
that I don't even know what snapd is :( I can say that "apt purge snapd
ubuntu-core-launcher squashfs-tools" made it stop eating my CPU.
Hmm, is there an edit button here somewhere???
Adding: I haven't tried yet but my _guess_ is the same thing would
happen if the above was run from a flash drive. Will try to test later.
Bill
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First of all, kudos for using a nice machine :-)
Can you please provide some additional information about the system when
the issue was observed:
- snap version
- snap changes
Can you explain how to re-create a similar environment (the persistence
aspect is something I'm unfamiliar with). I
this could be a special case of bug 1729867
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Title:
Live 18.04 with persistence snapd high CPU usage
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