| Message ID | 20220328170404.8565-1-xose.vazquez@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | christophe varoqui |
| Headers | show |
| Series | multipath-tools: add basic info on how to use multipath-tools with NVMe devices | expand |
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 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
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. -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
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 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
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? :-) -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
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 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
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
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