This is a bug in the LVM driver which has been fixed in CVS already. Regards, Heinz -- The LVM Guy -- On Wed, Nov 28, 2001 at 08:31:10AM +0100, Michael Guntsche wrote: > Hello List, > > Testing LVM with 2 spare partitions on one of my harddrives I found the > following problem with DEVFS + LVM. > If I make a VG inactive (vgchange -an) the partitions associated with it > become unavailable. I can still see them in /dev/ide/../part3 but trying to > access them gives a kernel OOPS (see below). It looks like the LVM does > something nasty to the devfs structure. > I tried it with several different kernels and devfs version, the result was > the same every time. > After much compiling and rebooting I pinpointed the problem down to the > PATCHES archive. If I use a non-patched LVM from the kernel everything > works. > I looked at the patch but didn't find a reference to devfs or similar > changes that might explain that behaviour. > I put the patch on http://mike.it-loops.com/lvm/lvm-1.0.1-2.4.16.patch.gz > if someone wants to take a look at it. > BTW, a non devfs-kernel works with the patch just fine. > > I hope I gave all the relevant information, if someone needs more I'd be > glad to provide it. > > Kind regards, > Michael Guntsche > > > ________OOPS_________ > ksymoops 2.4.3 on i686 2.4.16. Options used > -V (default) > -k /proc/ksyms (default) > -l /proc/modules (default) > -o /lib/modules/2.4.16/ (default) > -m /boot/System.map (specified) > > Nov 27 18:19:41 deepblue kernel: Unable to handle kernel NULL pointer > dereference at virtual address 00000018 > Nov 27 18:19:41 deepblue kernel: c0152f46 > Nov 27 18:19:41 deepblue kernel: *pde = 00000000 > Nov 27 18:19:41 deepblue kernel: Oops: 0002 > Nov 27 18:19:41 deepblue kernel: CPU: 0 > Nov 27 18:19:41 deepblue kernel: EIP: 0010:[devfs_open+118/352] Not > tainted > Nov 27 18:19:41 deepblue kernel: EFLAGS: 00010282 > Nov 27 18:19:41 deepblue kernel: eax: 00000000 ebx: cff5d8c0 ecx: > cd7b29c0 edx: c01efd20 > Nov 27 18:19:41 deepblue kernel: esi: cfc5b480 edi: cff5d8c8 ebp: > cd7b29c0 esp: cd675f40 > Nov 27 18:19:41 deepblue kernel: ds: 0018 es: 0018 ss: 0018 > Nov 27 18:19:41 deepblue kernel: Process vgchange (pid: 620, > stackpage=cd675000) > Nov 27 18:19:41 deepblue kernel: Stack: cd7b29c0 cfc5b480 ffffffe9 cffe93c0 > c01e7020 c012f081 cfc5b480 cd7b29c0 > Nov 27 18:19:41 deepblue kernel: 0804d554 cff4c000 00000000 bffff4fc > c012ef92 cfc5f8c0 cffe93c0 00000000 > Nov 27 18:19:41 deepblue kernel: 00000004 cff4c000 0804d554 cfc5f8c0 > cffe93c0 0804d554 bffff4fc 00000000 > Nov 27 18:19:41 deepblue kernel: Call Trace: [dentry_open+225/400] > [filp_open+82/96] [sys_open+54/160] [system_call+51/56] > Nov 27 18:19:41 deepblue kernel: Code: 89 50 18 eb 2b 90 8d 74 26 00 8b 43 > 08 85 c0 74 1a 8b 00 85 > Using defaults from ksymoops -t elf32-i386 -a i386 > > Code; 00000000 Before first symbol > 00000000 <_EIP>: > Code; 00000000 Before first symbol > 0: 89 50 18 mov %edx,0x18(%eax) > Code; 00000002 Before first symbol > 3: eb 2b jmp 30 <_EIP+0x30> 00000030 Before > first symbol > Code; 00000004 Before first symbol > 5: 90 nop > Code; 00000006 Before first symbol > 6: 8d 74 26 00 lea 0x0(%esi,1),%esi > Code; 0000000a Before first symbol > a: 8b 43 08 mov 0x8(%ebx),%eax > Code; 0000000c Before first symbol > d: 85 c0 test %eax,%eax > Code; 0000000e Before first symbol > f: 74 1a je 2b <_EIP+0x2b> 0000002a Before > first symbol > Code; 00000010 Before first symbol > 11: 8b 00 mov (%eax),%eax > Code; 00000012 Before first symbol > 13: 85 00 test %eax,(%eax) > ________________ > > > > > > > > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
