Hi, I installed Centos 4.0 on a Dual P3/1GB machine with 2 IBM 9GB SCA
disks (sda and sdb) . I have the following partition layout
/boot (raid1 on /dev/md0 = /dev/sda1, /dev/sdb1)
swap (raid1 on /dev/md1 = /dev/sda2, /dev/sdb2)
/ (lvm on raid1 on /dev/md2 = /dev/sda3, /dev/sdb3)
hal,udev,hotplug packages I have are
hal-0.4.2-1.EL4
udev-039-10.8.EL4
hotplug-2004_04_01-7.2
df -h output is
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 7.6G 1.1G 6.2G 15% /
/dev/md0 289M 17M 258M 7% /boot
none 506M 0 506M 0% /dev/shm
I used the instructions here
http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/014331.html
to get grub installed on both disks MBR so I could pull out either disk
and the system would boot up.
Then, I rebooted the system and whilst it was booting up, pulled out one
disk. The system came back up correctly and I got a root shell.
/dev should on /dev/sda[1,2,3]. Then I hot-inserted the disk expecting
udev/hotplug to detect the disc insertion and create the device nodes.
However, nothing should up in /var/log/messages, dmesg and /dev.
A reboot with both disks inserted brought the system up with md1 being
synced and I then used
mdadm /dev/md0 -a /dev/sda1
mdadm /dev/md2 -a /dev/sda3
to hot add the partitions on the disc inserted.
Did I miss any steps which should have led to the creation of
/dev/sdb[1,2,3] when I hot-inserted the disc in the first place ? Has
anybody got working hot-swap scsi with CentOS ?
Regards, Yusuf
--
Yusuf Goolamabbas
yusufg@xxxxxxxxxxxx
