raw volumes
Hi all: I created logical volume type raw. To use Informix block device or characte device ???? brw-rw---- 2 informix informix 9, 5 Jan 1 12:00 lvovl1 or crw-rw---- 2 informix informix 9, 5 Jan 1 12:00 rlvol1 Thanks PD: AIX 5.3 IDS 10.FC9 _________________________________________________________________ Regístrate en el nuevo Windows Live Messenger beta. http://imagine-msn.com/minisites/messenger/default.aspx?locale=es-ar
Juan Pablo wrote: > Hi all: > I created logical volume type raw. To use Informix block device or characte > device ???? > > brw-rw---- 2 informix informix 9, 5 Jan 1 12:00 lvovl1 > or > crw-rw---- 2 informix informix 9, 5 Jan 1 12:00 rlvol1 > > Thanks > > PD: > AIX 5.3 > IDS 10.FC9 > > _________________________________________________________________ > Regístrate en el nuevo Windows Live Messenger beta. > http://imagine-msn.com/minisites/messenger/default.aspx?locale=es-ar > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > > The character device.
Why character and not block Thanks >From: "Frank Langelage" <frank@lafr.de> >Reply-To: ids@iiug.org >To: ids@iiug.org >Subject: Re: raw volumes [10304] >Date: Sun, 4 Nov 2007 07:54:21 -0500 (EST) > >Juan Pablo wrote: > > Hi all: > > I created logical volume type raw. To use Informix block device or >characte > > device ???? > > > > brw-rw---- 2 informix informix 9, 5 Jan 1 12:00 lvovl1 > > or > > crw-rw---- 2 informix informix 9, 5 Jan 1 12:00 rlvol1 > > > > Thanks > > > > PD: > > AIX 5.3 > > IDS 10.FC9 > > > > _________________________________________________________________ > > Regístrate en el nuevo Windows Live Messenger beta. > > http://imagine-msn.com/minisites/messenger/default.aspx?locale=es-ar > > > > > > >******************************************************************************* > > Forum Note: Use "Reply" to post a response in the discussion forum. > > > > > > >The character device. > > >******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > _________________________________________________________________ MSN Amor: busca tu ½ naranja http://latam.msn.com/amor/
It is the way informix handles raw devices. The access is faster on most unixes through the character device (although dd should be faster with a block device, but what counts is the Informix access type). But it depends on the OS: For Linux e.g. you do not have to use character devices any more if you are using kaio (libaio should be present). At least, that is what I have learned about raw devices. Marcus -----Original Message----- From: Juan Pablo [mailto:in4mixperu@hotmail.com] Sent: Sunday, November 04, 2007 6:27 PM To: ids@iiug.org Subject: Re: raw volumes [10305] Why character and not block Thanks >From: "Frank Langelage" <frank@lafr.de> >Reply-To: ids@iiug.org >To: ids@iiug.org >Subject: Re: raw volumes [10304] >Date: Sun, 4 Nov 2007 07:54:21 -0500 (EST) > >Juan Pablo wrote: > > Hi all: > > I created logical volume type raw. To use Informix block device or >characte > > device ???? > > > > brw-rw---- 2 informix informix 9, 5 Jan 1 12:00 > > lvovl1 or > > crw-rw---- 2 informix informix 9, 5 Jan 1 12:00 rlvol1 > > > > Thanks > > > > PD: > > AIX 5.3 > > IDS 10.FC9 > > > > _________________________________________________________________ > > Regstrate en el nuevo Windows Live Messenger beta. > > http://imagine-msn.com/minisites/messenger/default.aspx?locale=es-ar > > > > > > >*********************************************************************** >******** > > Forum Note: Use "Reply" to post a response in the discussion forum. > > > > > > >The character device. > > >*********************************************************************** >******** Forum Note: Use "Reply" to post a response in the discussion >forum. > _________________________________________________________________ MSN Amor: busca tu naranja http://latam.msn.com/amor/ ************************************************************************ ******* Forum Note: Use "Reply" to post a response in the discussion forum.