From: Kees Cook <keescook@chromium.org>
To: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: James Morris <jmorris@namei.org>, Sasha Levin <sashal@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
anton@enomsg.org, ccross@android.com,
Tony Luck <tony.luck@intel.com>,
robh+dt@kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v1 0/3] allow ramoops to collect all kmesg_dump events
Date: Mon, 4 May 2020 12:12:12 -0700 [thread overview]
Message-ID: <202005041211.040A1C65C8@keescook> (raw)
In-Reply-To: <CA+CK2bBDzbXdH23aDxqGzMoxPppNcVmitrYJ00tJqympMBVJOg@mail.gmail.com>
On Mon, May 04, 2020 at 02:47:45PM -0400, Pavel Tatashin wrote:
> > > # reboot -f
> > >
> > > After VM is back:
> > >
> > > # mount -t pstore pstore /mnt
> > > # head /mnt/dmesg-ramoops-0
> > > Restart#1 Part1
> >
> > Is there a reason that using ramoops.console_size isn't sufficient for
> > this?
>
> Unfortunately, the console option is not working for us (Microsoft),
> we have an embedded device with a serial console, and the baud rate
> reduces the reboot performance, so we must keep the console quiet. We
> also want to be able collect full shutdown logs from the field that
> are collected during kexec based updates.
I meant collecting console via pstore (i.e. /mnt/console-ramoops-0). Are
you saying that's still too large for your situation?
--
Kees Cook
next prev parent reply other threads:[~2020-05-04 19:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-02 14:35 [PATCH v1 0/3] allow ramoops to collect all kmesg_dump events Pavel Tatashin
2020-05-02 14:35 ` [PATCH v1 1/3] printk: honor the max_reason field in kmsg_dumper Pavel Tatashin
2020-05-04 17:15 ` Steven Rostedt
2020-05-04 17:56 ` Pavel Tatashin
2020-05-04 18:12 ` Kees Cook
2020-05-04 18:40 ` Pavel Tatashin
2020-05-05 1:02 ` Sergey Senozhatsky
2020-05-05 2:52 ` Pavel Tatashin
2020-05-05 3:12 ` Pavel Tatashin
2020-05-05 4:21 ` Pavel Tatashin
2020-05-05 10:50 ` Sergey Senozhatsky
2020-05-02 14:35 ` [PATCH v1 2/3] pstore/ram: allow to dump kmesg during regular reboot Pavel Tatashin
2020-05-04 19:29 ` Kees Cook
2020-05-04 20:30 ` Pavel Tatashin
2020-05-04 20:54 ` Kees Cook
2020-05-02 14:35 ` [PATCH v1 3/3] ramoops: add dump_all optional field to ramoops DT node Pavel Tatashin
2020-05-04 19:29 ` Kees Cook
2020-05-04 20:00 ` Pavel Tatashin
2020-05-05 15:14 ` Pavel Tatashin
2020-05-04 18:14 ` [PATCH v1 0/3] allow ramoops to collect all kmesg_dump events Kees Cook
2020-05-04 18:47 ` Pavel Tatashin
2020-05-04 19:12 ` Kees Cook [this message]
2020-05-04 19:17 ` Pavel Tatashin
2020-05-04 19:30 ` Kees Cook
2020-05-04 20:00 ` Pavel Tatashin
2020-05-05 12:36 ` Sergey Senozhatsky
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