From: KELEMEN Peter <Peter.Kelemen@cern.ch>
To: linux-raid@vger.kernel.org
Subject: Re: /proc/partitions
Date: Mon, 20 Dec 2004 12:49:39 +0100 [thread overview]
Message-ID: <20041220114939.GA20243@inara.maison.net> (raw)
In-Reply-To: <Pine.LNX.4.56.0412201046050.4389@lion.drogon.net>
* Gordon Henderson (gordon@drogon.net) [20041220 10:50]:
> Is there any plans to make the entries in /proc/partitions
> return anything sensible for the md devices?
AFACT not. Current consensus is that md devices don't do I/O,
they only dispatch I/O to lower layer devices, hence no stats.
(OTOH, I personally was in a situation at least once when it
would have been very useful -- regardless of the obvious double
accounting.)
> If not, is there any other way to get some stats on reading &
> writing each md device?
Parse /proc/mdstat and cook up your own stat counters based on the
md member devices' stats.
Peter
PS: 2.6.x same thing
--
.+'''+. .+'''+. .+'''+. .+'''+. .+''
Kelemen Péter / \ / \ Peter.Kelemen@cern.ch
.+' `+...+' `+...+' `+...+' `+...+'
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2004-12-20 11:49 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <037401c4cf3b$ee75bc90$030a0a0a@musicroom>
2004-11-21 4:33 ` Good news / bad news - The joys of RAID Guy
2004-11-22 14:13 ` Yu Chen
2004-11-22 14:34 ` Gordon Henderson
2004-11-22 15:52 ` Good news / bad news - The joys of RAID - backups Alvin Oga
2004-11-22 17:56 ` Guy
2004-11-22 18:29 ` Alvin Oga
2004-11-22 19:48 ` Guy
2004-11-22 17:51 ` Good news / bad news - The joys of RAID Guy
2004-11-22 23:26 ` Gordon Henderson
2004-11-22 23:48 ` Guy
2004-11-23 0:09 ` Måns Rullgård
2004-11-23 15:33 ` Gordon Henderson
2004-11-23 0:17 ` berk walker
2004-11-23 9:24 ` Robin Bowes
2004-11-23 12:31 ` Bob Hillegas
2004-11-23 13:00 ` berk walker
2004-12-20 10:50 ` /proc/partitions Gordon Henderson
2004-12-20 11:49 ` KELEMEN Peter [this message]
2004-12-20 12:32 ` /proc/partitions Gordon Henderson
2004-12-20 22:26 ` /proc/partitions Neil Brown
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=20041220114939.GA20243@inara.maison.net \
--to=peter.kelemen@cern.ch \
--cc=linux-raid@vger.kernel.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.