From: Coly Li <colyli@suse.de>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Jan Kara <jack@suse.com>,
Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
linux-nvdimm@lists.01.org, dm-devel@redhat.com
Subject: Re: flood of "dm-X: error: dax access failed" due to 5.9 commit 231609785cbfb
Date: Thu, 3 Sep 2020 00:53:03 +0800 [thread overview]
Message-ID: <04dc00a0-086b-fff7-9d01-bd663d3a676a@suse.de> (raw)
In-Reply-To: <20200902165101.GB5928@redhat.com>
On 2020/9/3 00:51, Mike Snitzer wrote:
> On Wed, Sep 02 2020 at 12:46pm -0400,
> Coly Li <colyli@suse.de> wrote:
>
>> On 2020/9/3 00:44, Mike Snitzer wrote:
>>> On Wed, Sep 02 2020 at 12:40pm -0400,
>>> Coly Li <colyli@suse.de> wrote:
>>>
>>>> On 2020/9/3 00:04, Mike Snitzer wrote:
>>>>> 5.9 commit 231609785cbfb ("dax: print error message by pr_info() in
>>>>> __generic_fsdax_supported()") switched from pr_debug() to pr_info().
>>>>>
>>>>> The justification in the commit header is really inadequate. If there
>>>>> is a problem that you need to drill in on, repeat the testing after
>>>>> enabling the dynamic debugging.
>>>>>
>>>>> Otherwise, now all DM devices that aren't layered on DAX capable devices
>>>>> spew really confusing noise to users when they simply activate their
>>>>> non-DAX DM devices:
>>>>>
>>>>> [66567.129798] dm-6: error: dax access failed (-5)
>>>>> [66567.134400] dm-6: error: dax access failed (-5)
>>>>> [66567.139152] dm-6: error: dax access failed (-5)
>>>>> [66567.314546] dm-2: error: dax access failed (-95)
>>>>> [66567.319380] dm-2: error: dax access failed (-95)
>>>>> [66567.324254] dm-2: error: dax access failed (-95)
>>>>> [66567.479025] dm-2: error: dax access failed (-95)
>>>>> [66567.483713] dm-2: error: dax access failed (-95)
>>>>> [66567.488722] dm-2: error: dax access failed (-95)
>>>>> [66567.494061] dm-2: error: dax access failed (-95)
>>>>> [66567.498823] dm-2: error: dax access failed (-95)
>>>>> [66567.503693] dm-2: error: dax access failed (-95)
>>>>>
>>>>> commit 231609785cbfb must be reverted.
>>>>>
>>>>> Please advise, thanks.
>>>>
>>>> Adrian Huang from Lenovo posted a patch, which titled: dax: do not print
>>>> error message for non-persistent memory block device
>>>>
>>>> It fixes the issue, but no response for now. Maybe we should take this fix.
>>>
>>> OK, yes sounds like it. It was merged and is commit c2affe920b0e066
>>> ("dax: do not print error message for non-persistent memory block
>>> device")
>>
>> Thanks for informing me this patch is merged, I am going to update my
>> local one :-)
>
> So the thing is I'm running v5.9-rc3 (which includes this commit) but
> I'm still seeing all these warnings when I run the lvm2 testsuite. The
> reason _seems_ to be because the lvm2 testsuite uses brd devices for
> test devices. So there is something about the brd device that shows
> commit c2affe920b0e066 isn't enough :(
Let me take a look. Thanks for reminding me.
Coly Li
_______________________________________________
Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org
To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
next prev parent reply other threads:[~2020-09-02 16:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 16:04 flood of "dm-X: error: dax access failed" due to 5.9 commit 231609785cbfb Mike Snitzer
2020-09-02 16:40 ` Coly Li
2020-09-02 16:44 ` Mike Snitzer
2020-09-02 16:46 ` Coly Li
2020-09-02 16:51 ` Mike Snitzer
2020-09-02 16:53 ` Coly Li [this message]
2020-09-03 5:05 ` Coly Li
2020-09-03 5:20 ` Coly Li
2020-09-03 8:37 ` Coly Li
2020-09-03 11:24 ` [External] " Adrian Huang12
2020-09-03 11:31 ` Coly Li
2020-09-03 11:09 ` Adrian Huang12
2020-09-03 11:24 ` Coly Li
2020-09-02 23:05 ` Verma, Vishal L
2020-09-03 3:32 ` Coly Li
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=04dc00a0-086b-fff7-9d01-bd663d3a676a@suse.de \
--to=colyli@suse.de \
--cc=dm-devel@redhat.com \
--cc=jack@suse.com \
--cc=linux-nvdimm@lists.01.org \
--cc=pankaj.gupta.linux@gmail.com \
--cc=snitzer@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).