pstore is empty

[Uzytkownik]

I'm trying to debug some issues for which dmesg or even better journal after hang would be great to have (essentially I got hang during suspend). But pstore is empty for whatever reason. What am I doing wrong?

Code: Select all

% zgrep PSTORE < /proc/config.gz 
CONFIG_EFI_VARS_PSTORE=y
# CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE is not set
CONFIG_PSTORE=y
CONFIG_PSTORE_CONSOLE=y
CONFIG_PSTORE_PMSG=y
CONFIG_PSTORE_RAM=y
% mount | grep pstore
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
% ls /sys/fs/pstore -al
total 0
drwxr-xr-x 2 root root 0 Aug 30 11:18 .
drwxr-xr-x 8 root root 0 Aug 30 11:18 ..
% dmesg| grep -i pstore
[    1.677649] pstore: Registered efi as persistent store backend

[kernelOfTruth]

Any insights meanwhile ?

I only found:

https://mjg59.dreamwidth.org/23554.html

https://coreos.com/os/docs/latest/colle ... -logs.html


So it perhaps needs to be manually mounted first,

and then it only fills if the kernel actually crashes and/or CONFIG_PSTORE_CONSOLE=y is set