Re: fs/pstore question

[Ronny Meeus]

Op do 9 mei 2019 10:05 schreef Ronny Meeus <ronny.meeus@xxxxxxxxx>:
>
> Hello
>
> I'm using the pstore feature to log kernel crashes.
>
> What I observe is that after reboot, always 2 entries are present in the pstore:
>
> ls -l /mnt/pstore
> total 0
> -r--r--r--    1 root     root         16372 Jan  1 00:00 dmesg-ramoops-0
> -r--r--r--    1 root     root         16372 Jan  1 00:00 dmesg-ramoops-1
>
> If I do not delete the entries and force a new crash, only 2 new
> entries are available
> after the system is online again and the older entries are overwritten.
>
> The reason for this is that the write index is always initialized to 0
> during init.
> Is this intentional? I would expect that existing entries are kept
> until they are explicitly
> deleted or the storage is full. In the latter case the oldest entries
> can be replaced.
>
> Best regards,
> Ronny


Any feedback is appreciated.
Thanks