[linux-lvm] Can we make char files not blocked for the volumes
ak at suse.de
Mon Feb 21 23:23:42 UTC 2000
On Mon, Feb 21, 2000 at 04:45:06PM -0600, Chris Anderson wrote:
> "Stephen C. Tweedie" wrote:
> > Hi,
> > On Sat, 19 Feb 2000 07:08:29 -0600, Chris Anderson <chris at alwan.com> said:
> > > Heinz Mauelshagen wrote:
> > >> Please have a look at the rawio support for Linux.
> > > Where can I find this? In the kernel? Any help would be great.
> > 2.3 has it, and there are 2.2 patches on
> > ftp://ftp.uk.linux.org/pub/linux/sct/fs/raw-io
> Thanks. I used the link and download the files.
> It is odd how it is used. I had to hack it into 2.2.14, but go it working.
> I think the "raw" command is odd, also it needs to be run every time you
> reboot. Also who is the owner of this code. How does it find its way into
> the standard 2.3 and lvm has not yet? That is odd too.
LVM is in 2.3.47.
> My test with Informix IDS 7.3 for linux showed that the raw io is twice as
> slow. A 17 mins load under block device using lvm but took 31mins for the
> raw linked version. I will be testing the Informix 9.2 version tonight. I
> could not find much doc from informix other then the device need to be
rawio does not do any caching (as the name says), so you probably
need to configure the database to cache more on itself.
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