Hi,
After a boot this evening when back home:
$ cat /proc/swaps
Filename Type Size Used Priority
/dev/zram0 partition 947216 0 100
/dev/sda6 partition 4607996 0 -1
$
**Only one device is created, and it has a 100 priority! (zram-config
usually creates it with priority 5).
$ systemctl list-units | grep zram
sys-devices-virtual-block-zram0.device
loaded active plugged /sys/devices/virtual/block/zram0
● zram-config.service
loaded failed failed Initializes zram swaping
dev-zram0.swap
loaded active active /dev/zram0
$ apt-cache policy zram-config
zram-config:
Installé : 0.3.1
Candidat : 0.3.1
Table de version :
*** 0.3.1 0
500 http://archive.ubuntu.com/ubuntu/ vivid-proposed/universe amd64
Packages
100 /var/lib/dpkg/status
0.3 0
500 http://archive.ubuntu.com/ubuntu/ vivid/universe amd64 Packages
[melodie@bento64:~]$
=-=-=-=-=
then:
$ LANG=C systemctl status zram-config.service -l
* zram-config.service - Initializes zram swaping
Loaded: loaded (/lib/systemd/system/zram-config.service; enabled; vendor
preset: enabled)
Active: failed (Result: exit-code) since Tue 2015-06-16 20:50:26 CEST; 1h
59min ago
Process: 701 ExecStart=/usr/bin/init-zram-swapping (code=exited, status=255)
Main PID: 701 (code=exited, status=255)
Jun 16 20:50:22 bento64 init-zram-swapping[701]: sh: echo: I/O error
Jun 16 20:50:22 bento64 init-zram-swapping[701]: mkswap: error: /dev/zram0 is
mounted; will not make swapspace
Jun 16 20:50:22 bento64 init-zram-swapping[701]: swapon: /dev/zram0 : échec de
swapon: Périphérique ou ressource occupé
Jun 16 20:50:22 bento64 init-zram-swapping[701]: /usr/bin/init-zram-swapping:
21: /usr/bin/init-zram-swapping: cannot create /sys/block/zram1/disksize:
Directory nonexistent
Jun 16 20:50:22 bento64 init-zram-swapping[701]: /dev/zram1: Aucun fichier ou
dossier de ce type
Jun 16 20:50:22 bento64 init-zram-swapping[701]: swapon: stat failed
/dev/zram1: Aucun fichier ou dossier de ce type
Jun 16 20:50:26 bento64 systemd[1]: zram-config.service: main process exited,
code=exited, status=255/n/a
Jun 16 20:50:26 bento64 systemd[1]: Failed to start Initializes zram swaping.
Jun 16 20:50:26 bento64 systemd[1]: Unit zram-config.service entered failed
state.
Jun 16 20:50:26 bento64 systemd[1]: zram-config.service failed.
$
What else? Yes more information here:
$ uname -a
Linux bento64 3.19.0-21-generic #21-Ubuntu SMP Sun Jun 14 18:31:11 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
$
and also here about zram module:
$ cd /lib/modules
$ find . -name "zram*"
./3.19.0-18-generic/kernel/drivers/block/zram
./3.19.0-18-generic/kernel/drivers/block/zram/zram.ko
./3.19.0-20-generic/kernel/drivers/block/zram
./3.19.0-20-generic/kernel/drivers/block/zram/zram.ko
./3.19.0-21-generic/kernel/drivers/block/zram
./3.19.0-21-generic/kernel/drivers/block/zram/zram.ko
$
I wasn't aware it wasn't in the staging directory anymore. And about "is
it loaded and how?":
$ grep ZRAM /boot/config-3.19.0-21-generic
CONFIG_ZRAM=m
CONFIG_ZRAM_LZ4_COMPRESS=y
# CONFIG_ZRAM_DEBUG is not set
$
What about lsmod?
$ lsmod | grep zram
zram 24576 1
lz4_compress 16384 1 zram
$
What do you think? How is zram loaded?
Here is a scheme brought by "systemd-analyze plot" (can that help?)
http://citrotux.org/Downloads/plot.svg
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https://bugs.launchpad.net/bugs/1449678
Title:
(Vivid) zram-config 0.3 Job for zram-config.service failed
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