From: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Eric Blake <eblake-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: linux-nvdimm
<linux-nvdimm-y27Ovi1pjclAfugRpC6u6w@public.gmane.org>,
qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org
Subject: Re: [Qemu-devel] [ndctl PATCH 0/8] dimm label space initialization support
Date: Wed, 19 Oct 2016 12:41:54 -0700 [thread overview]
Message-ID: <CAPcyv4gbRE-ALJM6EHv6fM3Kq02HeZFMLF5T63J5qaJmHWvQCg@mail.gmail.com> (raw)
In-Reply-To: <6ceb7075-71fc-b725-8a1c-a7d8c727770e-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Wed, Oct 19, 2016 at 11:42 AM, Eric Blake <eblake-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> On 10/19/2016 11:47 AM, Dan Williams wrote:
>> The 4.9 kernel added support for sub-dividing PMEM. With this kernel
>> patch [1] on top of that baseline, the PMEM-sub-division support can be
>> enabled for QEMU-KVM and any other platforms that advertise both un-aliased
>> PMEM regions and support for the label DSM commands [2].
>>
>> Given this increasing need to perform a label management operation
>> across a set of DIMMs this update also adds glob(3) support. For
>> example you can now write commands like:
>>
>> ndctl zero-labels nmem[2-4]
>
> This is slightly scary, as it depends on the user not having any file
> named nmem2, nmem3, or nmem4 in the current working directory. Your
> example should probably encourage proper shell quoting, as in:
>
> ndctl zero-labels 'nmem[2-4]'
True. Although, the glob is run against the list of present device
names in the system, so local files named nmem should change the
operation of the command.
WARNING: multiple messages have this Message-ID (diff)
From: Dan Williams <dan.j.williams@intel.com>
To: Eric Blake <eblake@redhat.com>
Cc: linux-nvdimm <linux-nvdimm@ml01.01.org>,
Vishal L Verma <vishal.l.verma@intel.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [ndctl PATCH 0/8] dimm label space initialization support
Date: Wed, 19 Oct 2016 12:41:54 -0700 [thread overview]
Message-ID: <CAPcyv4gbRE-ALJM6EHv6fM3Kq02HeZFMLF5T63J5qaJmHWvQCg@mail.gmail.com> (raw)
In-Reply-To: <6ceb7075-71fc-b725-8a1c-a7d8c727770e@redhat.com>
On Wed, Oct 19, 2016 at 11:42 AM, Eric Blake <eblake@redhat.com> wrote:
> On 10/19/2016 11:47 AM, Dan Williams wrote:
>> The 4.9 kernel added support for sub-dividing PMEM. With this kernel
>> patch [1] on top of that baseline, the PMEM-sub-division support can be
>> enabled for QEMU-KVM and any other platforms that advertise both un-aliased
>> PMEM regions and support for the label DSM commands [2].
>>
>> Given this increasing need to perform a label management operation
>> across a set of DIMMs this update also adds glob(3) support. For
>> example you can now write commands like:
>>
>> ndctl zero-labels nmem[2-4]
>
> This is slightly scary, as it depends on the user not having any file
> named nmem2, nmem3, or nmem4 in the current working directory. Your
> example should probably encourage proper shell quoting, as in:
>
> ndctl zero-labels 'nmem[2-4]'
True. Although, the glob is run against the list of present device
names in the system, so local files named nmem should change the
operation of the command.
next prev parent reply other threads:[~2016-10-19 19:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-19 16:47 [ndctl PATCH 0/8] dimm label space initialization support Dan Williams
2016-10-19 16:47 ` [Qemu-devel] " Dan Williams
2016-10-19 16:47 ` [ndctl PATCH 1/8] libndctl: fix error returns for unsigned apis Dan Williams
2016-10-19 16:47 ` [ndctl PATCH 2/8] ndctl: consolidate label commands into a single file Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 3/8] ndctl: glob support for label commands Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 4/8] ndctl: merge {enable, disable}-dimm with " Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 5/8] libndctl: add ndctl_cmd_cfg_read_get_size() Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 6/8] ndctl: provide a read_labels() helper Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 7/8] ndctl: init-labels command Dan Williams
2016-10-19 16:48 ` [Qemu-devel] " Dan Williams
2016-10-19 16:48 ` [ndctl PATCH 8/8] ndctl: check-labels command Dan Williams
2016-10-19 18:42 ` [ndctl PATCH 0/8] dimm label space initialization support Eric Blake
2016-10-19 18:42 ` [Qemu-devel] " Eric Blake
[not found] ` <6ceb7075-71fc-b725-8a1c-a7d8c727770e-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-19 19:41 ` Dan Williams [this message]
2016-10-19 19:41 ` Dan Williams
[not found] ` <CAPcyv4gbRE-ALJM6EHv6fM3Kq02HeZFMLF5T63J5qaJmHWvQCg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19 21:29 ` Dan Williams
2016-10-19 21:29 ` Dan Williams
2016-10-19 23:46 ` Eric Blake
2016-10-19 23:46 ` [Qemu-devel] " Eric Blake
[not found] ` <708947f5-dfdc-d6c9-4523-7436959119f3-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-19 23:56 ` Dan Williams
2016-10-19 23:56 ` Dan Williams
2016-10-20 19:32 ` Vishal Verma
2016-10-20 19:32 ` [Qemu-devel] " Vishal Verma
2016-10-20 20:06 ` Dan Williams
2016-10-20 20:06 ` [Qemu-devel] " Dan Williams
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=CAPcyv4gbRE-ALJM6EHv6fM3Kq02HeZFMLF5T63J5qaJmHWvQCg@mail.gmail.com \
--to=dan.j.williams-ral2jqcrhueavxtiumwx3w@public.gmane.org \
--cc=eblake-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=linux-nvdimm-y27Ovi1pjclAfugRpC6u6w@public.gmane.org \
--cc=qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.