Re: Does RedHat 6.2 support Raw Devices for IDS 2000?
>>I got information from my local dealer of Informix Software about the new >>features of RedHat Linux 6.2 that allow configure IDS 2000 to use raw >>devices for the chunks. >>It's really posible? >With 9.21, yes. >>I've tried to install IDS 2000 on a RedHat 6.2 and used a link to the >>/dev/hda3 as the path for the primary chunk, but the initialization >>failed with an error message like this: "can't access the primary chunk". >What are the permissions on the device? >Why aren't they 660, user informix, group informix? "/dev/hda3" is a partition but not a raw revice. Raw devices are character devices, /dev/hda3 is a block device. RH7.0 DOES support true raw devices. /etc/sysconfig/rawdevices: -------------------------- # raw device bindings # format: <rawdev> <major> <minor> # <rawdev> <blockdev> # example: /dev/raw/raw1 /dev/sda1 # /dev/raw/raw2 8 5 /dev/raw/raw1 /dev/sda1 And when "/etc/rc.d/init.d/rawdevices" gets run (at startup based upon your runlevel) the specified partition is "bound" to the specified raw device. RH provides this for use with Oracle, but I would ***assume*** that it would work with Informix. I haven't tested this yet, so I'm only quoting documentation and very limited expirimentation (I can tar and untar from the raw partition). Systems and Network Administrator Morrison Industries 1825 Monroe Ave NW. Grand Rapids, MI. 49505
On Tue, 3 Oct 2000 17:28:24 -0400, Adam Tauno Williams <adam@morrison-ind.com> wrote: > >>>I got information from my local dealer of Informix Software about the new >>>features of RedHat Linux 6.2 that allow configure IDS 2000 to use raw >>>devices for the chunks. >>>It's really posible? >>With 9.21, yes. >>>I've tried to install IDS 2000 on a RedHat 6.2 and used a link to the >>>/dev/hda3 as the path for the primary chunk, but the initialization >>>failed with an error message like this: "can't access the primary chunk". >>What are the permissions on the device? >>Why aren't they 660, user informix, group informix? > >"/dev/hda3" is a partition but not a raw revice. Raw devices are character >devices, /dev/hda3 is a block device. RH7.0 DOES support true raw devices. > >/etc/sysconfig/rawdevices: >-------------------------- ># raw device bindings ># format: <rawdev> <major> <minor> ># <rawdev> <blockdev> ># example: /dev/raw/raw1 /dev/sda1 ># /dev/raw/raw2 8 5 >/dev/raw/raw1 /dev/sda1 > >And when "/etc/rc.d/init.d/rawdevices" gets run (at startup based upon >your runlevel) the specified partition is "bound" to the specified >raw device. RH provides this for use with Oracle, but I would >***assume*** that it would work with Informix. I haven't tested this >yet, so I'm only quoting documentation and very limited expirimentation >(I can tar and untar from the raw partition). > > >Systems and Network Administrator >Morrison Industries >1825 Monroe Ave NW. >Grand Rapids, MI. 49505 I am running RH7.0 and I am having a small problem using "tar" to the raw devices. The first thing I did was use fdisk to create an 100 MB linux partition (/dev/sdc1) Next I modified /etc/sysconfig/rawdevices to refelect the mapping /dev/raw/raw1 /dev/sdc1 Then I started raw device support up. I ran the raw -qa and all seems to be ok. Then I tried to tar some data to the raw partition using the following command: tar -cvf /dev/raw/raw1 /etc A couple of lines print and then I get an error "tar: /dev/raw/raw1: Cannot write: Invalid argument" I am running the command as root. If I try the tar command using the block device tar -cvf /dev/sdc1 /etc everything is fine. Does anyone have any ideam what might be wrong? I would like to use raw devices for my Informix installation of IIF 9.21.UC1 Thanlks Peter pdiazdeleon@cmpmail.com
Peter J Diaz de Leon wrote: > > On Tue, 3 Oct 2000 17:28:24 -0400, Adam Tauno Williams > <adam@morrison-ind.com> wrote: > > > > >>>I got information from my local dealer of Informix Software about the new > >>>features of RedHat Linux 6.2 that allow configure IDS 2000 to use raw > >>>devices for the chunks. > >>>It's really posible? > >>With 9.21, yes. > >>>I've tried to install IDS 2000 on a RedHat 6.2 and used a link to the > >>>/dev/hda3 as the path for the primary chunk, but the initialization > >>>failed with an error message like this: "can't access the primary chunk". > >>What are the permissions on the device? > >>Why aren't they 660, user informix, group informix? > > > >"/dev/hda3" is a partition but not a raw revice. Raw devices are character > >devices, /dev/hda3 is a block device. RH7.0 DOES support true raw devices. > > > >/etc/sysconfig/rawdevices: > >-------------------------- > ># raw device bindings > ># format: <rawdev> <major> <minor> > ># <rawdev> <blockdev> > ># example: /dev/raw/raw1 /dev/sda1 > ># /dev/raw/raw2 8 5 > >/dev/raw/raw1 /dev/sda1 > > > >And when "/etc/rc.d/init.d/rawdevices" gets run (at startup based upon > >your runlevel) the specified partition is "bound" to the specified > >raw device. RH provides this for use with Oracle, but I would > >***assume*** that it would work with Informix. I haven't tested this > >yet, so I'm only quoting documentation and very limited expirimentation > >(I can tar and untar from the raw partition). > > > > > >Systems and Network Administrator > >Morrison Industries > >1825 Monroe Ave NW. > >Grand Rapids, MI. 49505 > > I am running RH7.0 and I am having a small problem using "tar" to the > raw devices. > > The first thing I did was use fdisk to create an 100 MB linux > partition (/dev/sdc1) > > Next I modified /etc/sysconfig/rawdevices to refelect the mapping > /dev/raw/raw1 /dev/sdc1 > > Then I started raw device support up. > > I ran the raw -qa and all seems to be ok. > > Then I tried to tar some data to the raw partition using the following > command: > tar -cvf /dev/raw/raw1 /etc Why? Just to check that you could write anything there? What about using dd instead of tar? You don't normally write to raw devices with tar (though, in all honesty, I can't think of a reason why it shouldn't work). > A couple of lines print and then I get an error "tar: /dev/raw/raw1: > Cannot write: Invalid argument" I wonder if you need to specify a block size? I don't know what is a good one to suggest; probably a power of 2, such as 32: tar -cvfb /dev/raw/raw1 32 /etc > I am running the command as root. > > If I try the tar command using the block device > tar -cvf /dev/sdc1 /etc > everything is fine. > > Does anyone have any ideam what might be wrong? I would like to use > raw devices for my Informix installation of IIF 9.21.UC1 > > Thanlks > Peter > pdiazdeleon@cmpmail.com -- Yours, Jonathan Leffler (Jonathan.Leffler@Informix.com) #include <disclaimer.h> Guardian of DBD::Informix v1.00.PC1 -- http://www.perl.com/CPAN "I don't suffer from insanity; I enjoy every minute of it!"