[linux-lvm] HowTo: EIDE/ATA-100 + RAID 1 + LVM

Robert_Macaulay at Dell.com Robert_Macaulay at Dell.com
Thu Jun 28 21:46:10 UTC 2001

About the Raid 1.

I had a 4G RAM box(HIMEM64 enabled) with Hardware RAID 1 and LVM beta7,
kernel is from RH 7.1, version 2.4.3-6.

I added 4GB of RAM, kept the kernel the same, and switched to Software RAID
1. Now, I'm getting all sorts of instabilities. For example, I had a APIC
error fly by. umount core dumped. pvscan crashed twice and worked on the
third try(but saw a fraction to the disks, the 4th shot saw them all).
crond randomly crashed. I have the oops from the crond dump, but looked
fairly innocent of lvm code.

I know I changed 2 variables(RAM and RAID). I'm going to go back to HW raid
1 for now, and see if it makes a difference.

Just wondering if this has been seen, and if anyone knows what could have
caused it. The oops follows.


Unable to handle kernel paging request at virtual address 2e2e3e83
Oops: 0000
CPU:    0
EIP:    0010:[<c0144078>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: 2e2e3e5b   ebx: ccf0dd60   ecx: e839d700   edx: e8123f54
esi: 00000000   edi: e81832c0   ebp: e821f00c   esp: e8123f34
ds: 0018   es: 0018   ss: 0018
Process crond (pid: 817, stackpage=e8123000)
Stack: 000041ed 00000009 00000000 ccf0dd60 00000000 00001000 fffffff4
       e821f005 00000007 0af98a86 0804c702 00000000 e821f000 e8123f9c
       c014462a e821f000 e8123f9c e8122000 bffffbe0 00000003 c0140ff3
Call Trace: [<c014462a>] [<c0140ff3>] [<c012035b>] [<c0106f3b>]
Code: 8b 40 28 85 c0 74 71 be 00 e0 ff ff 21 e6 8b 86 40 03 00 00

>>EIP; c0144078 <path_walk+748/8b0>   <=====
Trace; c014462a <__user_walk+3a/60>
Trace; c0140ff3 <sys_stat64+13/70>
Trace; c012035b <sys_nanosleep+11b/190>
Trace; c0106f3b <system_call+33/38>
Code;  c0144078 <path_walk+748/8b0>
00000000 <_EIP>:
Code;  c0144078 <path_walk+748/8b0>   <=====
   0:   8b 40 28                  mov    0x28(%eax),%eax   <=====
Code;  c014407b <path_walk+74b/8b0>
   3:   85 c0                     test   %eax,%eax
Code;  c014407d <path_walk+74d/8b0>
   5:   74 71                     je     78 <_EIP+0x78> c01440f0
Code;  c014407f <path_walk+74f/8b0>
   7:   be 00 e0 ff ff            mov    $0xffffe000,%esi
Code;  c0144084 <path_walk+754/8b0>
   c:   21 e6                     and    %esp,%esi
Code;  c0144086 <path_walk+756/8b0>
   e:   8b 86 40 03 00 00         mov    0x340(%esi),%eax

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