FC3 with raid1 freeze!!!! ver II!
Dmitry
fedora at comita.ru
Thu Dec 9 13:14:50 UTC 2004
I wanted to simulate failing SATA drive in raid 1, I simply switch off
power on sda HDD, when the system was running. But my system almoust
freezes!!! Is it problems with half-done SATA-driver in kernel or
something other problem?
See my description:
Linux hostname.lan 2.6.9-1.681_FC3 #1 Thu Nov 18 15:10:10 EST 2004 i686 i686 i386 GNU/Linux
CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz stepping 02
Motherboard: P4B533-E
Onboard Promise controller - disabled!
Installed: PCI Promis SATA 150 TX2Plus.
2 HDD SATA Maxtor DiamondMax 10 200G
After updating:
kernel-2.6.9-1.681_FC3
kernel-utils-2.4-13.1.39
mdadm-1.6.0-2
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/md0 / ext3 defaults 1 1
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/vg0/usr /usr ext3 defaults 1 2
/dev/vg0/usr_cvsroot /usr/cvsroot ext3 defaults 1 2
/dev/vg0/var /var ext3 defaults 1 2
/dev/vg0/swap swap swap defaults 0 0
/dev/hdb /media/cdrom auto pamconsole,exec,noauto,managed 0 0
/dev/fd0 /media/floppy auto pamconsole,exec,noauto,managed 0 0
# mdadm.conf written out by anaconda
DEVICE partitions
MAILADDR root
ARRAY /dev/md1 super-minor=1
ARRAY /dev/md0 super-minor=0
md0 - raid1 for / (ext3)
md1 - raid1 for lvm (see fstab)
When system is running I power off second HDD (/dev/sdb) and my system almost freeze!!! After that I power down my system, plug on power to second HDD and system start. There are no error messages in /var/log/messages about failing /dev/sdb, no error mail from mdadm!
[root at cvs ~]# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdb2[1] sda2[0]
198113472 blocks [2/2] [UU]
md0 : active raid1 sdb1[1] sda1[0]
1020032 blocks [2/2] [UU]
unused devices: <none>
Three months ago I tested FC2 with 2 ATA HDD, and when I powered off
second HDD, system was fine, I got message from mdadm about failing
HDD and my system was still fine.
But FC3 almost freeze. System normally boots from sdb when sda unplugged.
Can someone help me?
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