Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
This happned after a drbdadm resize in my resource (I had extended the
device with lvm), on a debian gnu/linux (the oops is on the end of report)
magratea:~# uname -a
Linux magratea 2.6.16-2-xen-686 #1 SMP Tue May 23 05:46:45 CEST 2006 i686
GNU/Linux
Im running LVM on top of DRBD
magratea:~# lvm version
LVM version: 2.01.04 (2005-02-09)
Library version: 1.01.00-ioctl (2005-01-17)
Driver version: 4.5.0
drbd version is:
Version: 8.0pre3 (api:82)
SVN Revision: 2169 build by root at magratea, 2006-06-29 17:09:10
My config (and resource of drbd)
global {
minor-count 15;
}
common {
startup {
wfc-timeout 0;
degr-wfc-timeout 120; # 2 minutes.
}
disk {
on-io-error detach;
}
net {
timeout 60; # 6 seconds (unit = 0.1 seconds)
connect-int 10; # 10 seconds (unit = 1 second)
ping-int 10; # 10 seconds (unit = 1 second)
max-buffers 2048;
max-epoch-size 2048;
ko-count 4;
allow-two-primaries;
}
syncer {
rate 100M;
al-extents 257;
}
}
resource marvin.root {
protocol B;
on magratea {
device /dev/drbd0;
disk /dev/mapper/arr0-marvin.root;
address 10.255.255.1:7788;
meta-disk internal;
}
on cricket {
device /dev/drbd0;
disk /dev/mapper/arr0-marvin.root;
address 10.255.255.2:7788;
meta-disk internal;
}
}
The volume
magratea:~# lvdisplay /dev/arr0/marvin.root
--- Logical volume ---
LV Name /dev/arr0/marvin.root
VG Name arr0
LV UUID DFLxkR-y3by-9Q95-bs5I-iHAq-Y9eM-AWJ8J6
LV Write Access read/write
LV Status available
# open 2
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 254:4
The syslog...
Jul 3 17:49:21 magratea kernel: Unable to handle kernel NULL pointer
dereference at virtual address 0000001c
Jul 3 17:49:21 magratea kernel: printing eip:
Jul 3 17:49:21 magratea kernel: c13af1e0
Jul 3 17:49:21 magratea kernel: *pde = ma 00000000 pa fffff000
Jul 3 17:49:21 magratea kernel: Oops: 0002 [#1]
Jul 3 17:49:21 magratea kernel: SMP
Jul 3 17:49:21 magratea kernel: Modules linked in: drbd xt_physdev
iptable_filter ip_tables x_tables ipv6 bridge megaraid ext2 mbcache dm_mod
ide_disk evdev mousedev tsdev hw_random sg pcspkr rtc floppy serial_core
psmouse shpchp pci_hotplug serio_raw xfs exportfs sd_mod usbhid ide_cd cdrom
megaraid_mbox scsi_mod megaraid_mm uhci_hcd piix ehci_hcd generic usbcore
ide_core tg3 thermal processor fan
Jul 3 17:49:21 magratea kernel: CPU: 0
Jul 3 17:49:21 magratea kernel: EIP: 0061:[<c13af1e0>] Not tainted
VLI
Jul 3 17:49:21 magratea kernel: EFLAGS: 00010293 (2.6.16-2-xen-686 #1)
Jul 3 17:49:21 magratea kernel: EIP is at drbd_ioctl+0x33a/0xafd [drbd]
Jul 3 17:49:21 magratea kernel: eax: 00000000 ebx: 40084410 ecx:
00000015 edx: 00000000
Jul 3 17:49:21 magratea kernel: esi: bf5368c0 edi: 00000000 ebp:
be654808 esp: bde69e28
Jul 3 17:49:21 magratea kernel: ds: 007b es: 007b ss: 0069
Jul 3 17:49:21 magratea kernel: Process drbdsetup (pid: 13403,
threadinfo=bde68000 task=bf521030)
Jul 3 17:49:21 magratea kernel: Stack: <0>bf2cee40 b00fa964 00000310
00000001 00000000 00000000 00000004 00001000
Jul 3 17:49:21 magratea kernel: b8269684 b8269684 c1229b94 b8269684
00000008 00000000 00000000 00000000
Jul 3 17:49:21 magratea kernel: b8269684 00000008 be558664 00000006
0f22a09c 00000000 bde69ef0 bde69ef0
Jul 3 17:49:21 magratea kernel: Call Trace:
Jul 3 17:49:21 magratea kernel: [<c1229b94>] xfs_access+0x2b/0x33 [xfs]
Jul 3 17:49:21 magratea kernel: [<b0106d66>] do_gettimeofday+0x4d/0x1cc
Jul 3 17:49:21 magratea kernel: [<b01345cd>] find_get_page+0x1b/0x5d
Jul 3 17:49:21 magratea kernel: [<b013534d>] filemap_nopage+0xc5/0x2e7
Jul 3 17:49:21 magratea kernel: [<b0135419>] filemap_nopage+0x191/0x2e7
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b01a91bb>] blkdev_driver_ioctl+0x40/0x58
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b01a9387>] blkdev_ioctl+0x1b4/0x1c3
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b0156c5c>] block_ioctl+0x1a/0x1e
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b015f284>] do_ioctl+0x28/0x66
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b015f54c>] vfs_ioctl+0x17e/0x18c
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b015f5a0>] sys_ioctl+0x46/0x62
Jul 3 17:49:21 magratea kernel: [<b0325900>] inflate_codes+0x26e/0x3fa
Jul 3 17:49:21 magratea kernel: [<b0104665>] syscall_call+0x7/0xb
Jul 3 17:49:21 magratea kernel: Code: 0f b6 85 5c 02 00 00 c7 44 24 38 8d
ff ff ff 24 0f 3c 0a 0f 84 be 07 00 00 c7 44 24 38 00 00 00 00 8b bc 24 c4
00 00 00 8b 45 34 <89> 78 1c c7 40 20 00 00 00 00 68 fd 04 00 00 68 60 20 3c
c1 55
Jul 3 17:49:21 magratea kernel: klogd 1.4.1, ---------- state change
----------
Jul 3 17:49:21 magratea kernel: No module symbols loaded - kernel modules
not enabled.
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