Public bug reported:
Under 20.10, my machine of 64GB had 8 zram devices of 2GB each.
After the 21.04 upgrade, zram was still configured, but now with one 1 device
of 256MB.
dpkg-reconfigure did not fix this
purge and reinstall did not fix this.
$ cat /proc/swaps
Filename Type Size Used
Priority
/dev/zram0 partition 262140 0
100
$ lsblk -d | grep -e ^NAME -e disk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
zram0 252:0 0 256M 0 disk [SWAP]
nvme0n1 259:0 0 953.9G 0 disk
nvme1n1 259:4 0 931.5G 0 disk
This is output from my system prior to upgrade (that is under 20.10)
$ lsblk -d | grep -e ^NAME -e disk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOIN
zram0 252:0 0 16M 0 disk [SWAP]
zram1 252:1 0 2G 0 disk [SWAP]
zram2 252:2 0 16M 0 disk [SWAP]
zram3 252:3 0 2G 0 disk [SWAP]
zram4 252:4 0 16M 0 disk [SWAP]
zram5 252:5 0 2G 0 disk [SWAP]
zram6 252:6 0 2G 0 disk [SWAP]
zram7 252:7 0 16M 0 disk [SWAP]
zram8 252:8 0 2G 0 disk [SWAP]
zram9 252:9 0 16M 0 disk [SWAP]
zram10 252:10 0 2G 0 disk [SWAP]
zram11 252:11 0 16M 0 disk [SWAP]
zram12 252:12 0 2G 0 disk [SWAP]
zram13 252:13 0 2G 0 disk [SWAP]
zram14 252:14 0 16M 0 disk [SWAP]
zram15 252:15 0 2G 0 disk [SWAP]
ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: zram-config 0.6
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 24 15:47:18 2021
Dependencies:
InstallationDate: Installed on 2020-11-22 (152 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
PackageArchitecture: all
SourcePackage: zram-config
UpgradeStatus: Upgraded to hirsute on 2021-04-23 (0 days ago)
** Affects: zram-config (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug hirsute
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https://bugs.launchpad.net/bugs/1925989
Title:
after upgrade to 21.04, zram only 1 device of 256MB on 64 GB system
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