 | | | Red Hat AS 4 questions | Red Hat AS 4 questions 2005-08-10 - By Allen, Jack
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I just loaded Red Hat AS 4 on and IBM xServer 366. Everything
when fine. I have 2 disk in Raid 1, that everything was loaded on and
appear as /dev/sdg1 - /dev/sdg9. Then there are 12 other disk, that are
in Raid 1, so the OS sees 6 disk. These 6 disk were all setup with one
partition and appear as /dev/sda1 through /dev/sdf1. I ran pvcreate
/dev/sda1, pvcreate /dev/sdb1 ... Then I ran vgcreate vg01 /dev/sda1
/dev/sdb1. The vgdisplay command shows the correct information, no
problem. Then I ran
lvcreate -L 2G -n h0000n0.v00a vg01. This is for and application to
directly access, so I needed to change the owner, group and mode. So I
went to /dev/vg01 and did "ls -l" to see what it currently was. This is
when I found out the name h0000n0.v00a was a symbolic link to
/dev/mapper/vg01-h0000n0.v00a. So my first question is: does this mean I
am running the dev file system or something by default? Or is this the
way that lvm2 works now?
Now to my second problem. When I loaded Red Hat AS 3, I don't
remember doing anything special to create the /dev/st* and /dev/nst*
nodes. It seems there was something like 7 of each. Well on the this
system there are none. The man page for st gives an example of "mknod -m
0666 /dev/st0 c 9 0", which I did. No errors. But if I do "mt -f
/dev/st0 status" the error indicates no such device or address. I would
assume this is because the major device number may not be correct. So my
question is: what should it be? Or is it related to the /dev/mapper
question above? As far as the tape drive really being connected to the
system, it shows up during boot when the controller is identified. This
is before Linux boots. I don't remember if it showed up during the Linux
boot. I will have to reboot again to see. I guess another question would
be is all the boot messages from the kernel logged somewhere? I thought
it was, but don't remember where.
Thanks in advance for any help you can provide.
Jack Allen
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<P> <FONT SIZE=2 FACE="Arial">I just
loaded Red Hat AS 4 on and IBM xServer 366. Everything when fine. I have 2 disk
in Raid 1, that everything was loaded on and appear as /dev/sdg1 - /dev/sdg9.
Then there are 12 other disk, that are in Raid 1, so the OS sees 6 disk. These
6 disk were all setup with one partition and appear as /dev/sda1 through /dev
/sdf1. I ran pvcreate /dev/sda1, pvcreate /dev/sdb1 ... Then I ran vgcreate vg01
/dev/sda1 /dev/sdb1. The vgdisplay command shows the correct information, no
problem. Then I ran</FONT></P>
<P><FONT SIZE=2 FACE="Arial">lvcreate -L 2G -n h0000n0.v00a vg01. This is for
and application to directly access, so I needed to change the owner, group and
mode. So I went to /dev/vg01 and did "ls -l" to see what it currently
was. This is when I found out the name h0000n0.v00a was a symbolic link to /dev
/mapper/vg01-h0000n0.v00a. So my first question is: does this mean I am running
the dev file system or something by default? Or is this the way that lvm2 works
now?</FONT></P>
<P> <FONT SIZE=2 FACE="Arial">Now to
my second problem. When I loaded Red Hat AS 3, I don't remember doing anything
special to create the /dev/st* and /dev/nst* nodes. It seems there was
something like 7 of each. Well on the this system there are none. The man page
for st gives an example of "mknod -m 0666 /dev/st0 c 9 0", which I
did. No errors. But if I do "mt -f /dev/st0 status" the error
indicates no such device or address. I would assume this is because the major
device number may not be correct. So my question is: what should it be? Or is
it related to the /dev/mapper question above? As far as the tape drive really
being connected to the system, it shows up during boot when the controller is
identified. This is before Linux boots. I don't remember if it showed up during
the Linux boot. I will have to reboot again to see. I guess another question
would be is all the boot messages from the kernel logged somewhere? I thought
it was, but don't remember where.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Thanks in advance for any help you can provide.<
/FONT>
<BR><FONT SIZE=2 FACE="Arial">Jack Allen</FONT>
</P>
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