* [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
@ 2022-03-28 17:04 Xose Vazquez Perez
2022-03-28 17:48 ` Martin Wilck
0 siblings, 1 reply; 6+ messages in thread
From: Xose Vazquez Perez @ 2022-03-28 17:04 UTC (permalink / raw)
Cc: Xose Vazquez Perez, Martin Wilck, DM-DEVEL ML
Cc: Martin Wilck <mwilck@suse.com>
Cc: Benjamin Marzinski <bmarzins@redhat.com>
Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: DM-DEVEL ML <dm-devel@redhat.com>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
---
README.nvme | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100644 README.nvme
diff --git a/README.nvme b/README.nvme
new file mode 100644
index 00000000..70bf6b0d
--- /dev/null
+++ b/README.nvme
@@ -0,0 +1,12 @@
+To use Device Mapper/multipath-tools with NVMe devices,
+if the Native NVMe Multipath subsystem is enabled
+( "Y" in /sys/module/nvme_core/parameters/multipath ),
+it has to be disabled:
+
+echo "options nvme_core multipath=N" > /etc/modprobe.d/01-nvme_core-mp.conf
+regenerate the initramfs (dracut -f or update-initramfs) and reboot.
+
+Check that it is disabled(N) with:
+cat /sys/module/nvme_core/parameters/multipath
+or
+systool -m nvme_core -A multipath
--
2.35.1
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
2022-03-28 17:04 [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices Xose Vazquez Perez
@ 2022-03-28 17:48 ` Martin Wilck
2022-03-28 17:57 ` Xose Vazquez Perez
0 siblings, 1 reply; 6+ messages in thread
From: Martin Wilck @ 2022-03-28 17:48 UTC (permalink / raw)
To: Xose Vazquez Perez; +Cc: DM-DEVEL ML
On Mon, 2022-03-28 at 19:04 +0200, Xose Vazquez Perez wrote:
> Cc: Martin Wilck <mwilck@suse.com>
> Cc: Benjamin Marzinski <bmarzins@redhat.com>
> Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
> Cc: DM-DEVEL ML <dm-devel@redhat.com>
> Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
> ---
> README.nvme | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
> create mode 100644 README.nvme
Why another separate README with just 12 lines?
Martin
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
2022-03-28 17:48 ` Martin Wilck
@ 2022-03-28 17:57 ` Xose Vazquez Perez
2022-04-01 10:20 ` Martin Wilck
0 siblings, 1 reply; 6+ messages in thread
From: Xose Vazquez Perez @ 2022-03-28 17:57 UTC (permalink / raw)
To: Martin Wilck; +Cc: DM-DEVEL ML
On 3/28/22 19:48, Martin Wilck wrote:
> On Mon, 2022-03-28 at 19:04 +0200, Xose Vazquez Perez wrote:
>> Cc: Martin Wilck <mwilck@suse.com>
>> Cc: Benjamin Marzinski <bmarzins@redhat.com>
>> Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
>> Cc: DM-DEVEL ML <dm-devel@redhat.com>
>> Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
>> ---
>> README.nvme | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>> create mode 100644 README.nvme
>
> Why another separate README with just 12 lines?
>
> Martin
README.md is intended multipath-tools developers.
And README.alua and README.nvme are for sysadmins.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
2022-03-28 17:57 ` Xose Vazquez Perez
@ 2022-04-01 10:20 ` Martin Wilck
2022-06-16 20:32 ` Xose Vazquez Perez
0 siblings, 1 reply; 6+ messages in thread
From: Martin Wilck @ 2022-04-01 10:20 UTC (permalink / raw)
To: Xose Vazquez Perez; +Cc: DM-DEVEL ML
On Mon, 2022-03-28 at 19:57 +0200, Xose Vazquez Perez wrote:
> On 3/28/22 19:48, Martin Wilck wrote:
> > On Mon, 2022-03-28 at 19:04 +0200, Xose Vazquez Perez wrote:
> > > Cc: Martin Wilck <mwilck@suse.com>
> > > Cc: Benjamin Marzinski <bmarzins@redhat.com>
> > > Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
> > > Cc: DM-DEVEL ML <dm-devel@redhat.com>
> > > Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
> > > ---
> > > README.nvme | 12 ++++++++++++
> > > 1 file changed, 12 insertions(+)
> > > create mode 100644 README.nvme
> >
> > Why another separate README with just 12 lines?
> >
> > Martin
>
> README.md is intended multipath-tools developers.
> And README.alua and README.nvme are for sysadmins.
>
I see no fundamental reason not to merge all READMEs into one,
and create "sysadmin" and "developer" sections.
Regards,
Martin
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
2022-04-01 10:20 ` Martin Wilck
@ 2022-06-16 20:32 ` Xose Vazquez Perez
2022-06-17 6:48 ` Martin Wilck
0 siblings, 1 reply; 6+ messages in thread
From: Xose Vazquez Perez @ 2022-06-16 20:32 UTC (permalink / raw)
To: Martin Wilck; +Cc: Christophe Varoqui, DM-DEVEL ML
On 4/1/22 12:20, Martin Wilck wrote:
> On Mon, 2022-03-28 at 19:57 +0200, Xose Vazquez Perez wrote:
>> On 3/28/22 19:48, Martin Wilck wrote:
>>> On Mon, 2022-03-28 at 19:04 +0200, Xose Vazquez Perez wrote:
>>>> Cc: Martin Wilck <mwilck@suse.com>
>>>> Cc: Benjamin Marzinski <bmarzins@redhat.com>
>>>> Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
>>>> Cc: DM-DEVEL ML <dm-devel@redhat.com>
>>>> Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
>>>> ---
>>>> README.nvme | 12 ++++++++++++
>>>> 1 file changed, 12 insertions(+)
>>>> create mode 100644 README.nvme
>>>
>>> Why another separate README with just 12 lines?
>>>
>>> Martin
>>
>> README.md is intended multipath-tools developers.
>> And README.alua and README.nvme are for sysadmins.
>>
>
> I see no fundamental reason not to merge all READMEs into one,
> and create "sysadmin" and "developer" sections.
README.md is in markdown syntax.
README.alua and README.nvme are plain text, and its content is easier to identify.
Are you running out of inodes? :-)
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices
2022-06-16 20:32 ` Xose Vazquez Perez
@ 2022-06-17 6:48 ` Martin Wilck
0 siblings, 0 replies; 6+ messages in thread
From: Martin Wilck @ 2022-06-17 6:48 UTC (permalink / raw)
To: Xose Vazquez Perez; +Cc: Christophe Varoqui, DM-DEVEL ML
On Thu, 2022-06-16 at 22:32 +0200, Xose Vazquez Perez wrote:
> On 4/1/22 12:20, Martin Wilck wrote:
>
> > On Mon, 2022-03-28 at 19:57 +0200, Xose Vazquez Perez wrote:
> > > On 3/28/22 19:48, Martin Wilck wrote:
> > > > On Mon, 2022-03-28 at 19:04 +0200, Xose Vazquez Perez wrote:
> > > > > Cc: Martin Wilck <mwilck@suse.com>
> > > > > Cc: Benjamin Marzinski <bmarzins@redhat.com>
> > > > > Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
> > > > > Cc: DM-DEVEL ML <dm-devel@redhat.com>
> > > > > Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
> > > > > ---
> > > > > README.nvme | 12 ++++++++++++
> > > > > 1 file changed, 12 insertions(+)
> > > > > create mode 100644 README.nvme
> > > >
> > > > Why another separate README with just 12 lines?
> > > >
> > > > Martin
> > >
> > > README.md is intended multipath-tools developers.
> > > And README.alua and README.nvme are for sysadmins.
> > >
> >
> > I see no fundamental reason not to merge all READMEs into one,
> > and create "sysadmin" and "developer" sections.
>
> README.md is in markdown syntax.
> README.alua and README.nvme are plain text, and its content is easier
> to identify.
> Are you running out of inodes? :-)
No, it' about user friendliness. These .txt files are developer-level
documentation, while ALUA and NVMe are topic which are at least as
important to users as for developers. Distributions tend to ship the
READMEs under /usr/share/doc, but to be realistic, how many users still
look there for documentation these days?
Regards,
Martin
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^ permalink raw reply [flat|nested] 6+ messages in thread
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2022-03-28 17:04 [dm-devel] [PATCH] multipath-tools: add basic info on how to use multipath-tools with NVMe devices Xose Vazquez Perez
2022-03-28 17:48 ` Martin Wilck
2022-03-28 17:57 ` Xose Vazquez Perez
2022-04-01 10:20 ` Martin Wilck
2022-06-16 20:32 ` Xose Vazquez Perez
2022-06-17 6:48 ` Martin Wilck
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