[linux-lvm] LVM 0.9 snapshot and ext3

Jay Weber jay at lazy.accessus.net
Wed Nov 29 06:09:32 UTC 2000


I'm getting an oops while using ext3 and lvm snapshot (in the case where
snapshot runs out of space).  I'm thinking if the snapshot is out of space
it should disable and ext3 probably shouldn't oops since the journal is
being written to the active source and not the snapshot.

This is using lvm 0.9 and ext3 0.05b using the writeback data journaling

I've included the output below for any interested.

EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with writeback data mode.
lvm -- giving up to snapshot /dev/vol/foo on /dev/vol/snap due out of
Bad lvm_map in ll_rw_block
Assertion failure in journal_write_metadata_buffer() at journal.c line
302: "!buffer_locked(bh_in)"
Unable to handle kernel NULL pointer dereference at virtual address
current->tss.cr3 = 00101000, %cr3 = 00101000
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0010:[<c0155540>]
EFLAGS: 00010282
eax: 00000067   ebx: 00000000   ecx: 000000d4   edx: c6da6000
esi: c3b85c60   edi: c3b85c60   ebp: 00000000   esp: c3ac7e64
ds: 0018   es: 0018   ss: 0018
Process kjournald (pid: 968, process nr: 60, stackpage=c3ac7000)
Stack: c01e2c20 0000012e c01e2c7a c3ac7fc4 c3b85c60 c7e3aac0 c3ac7fc8
       c015851c c7e3aac0 c3b85c60 c3ac7fc4 00000427 c6161a40 c5d9c8c0
       c5ae82a0 c5ae85a0 c5ae86a0 c6fb3560 c6fb3de0 c6fb3ee0 c10114a0
Call Trace: [<c01e2c20>] [<c01e2c7a>] [<c015851c>] [<c0155341>]
[<c0155230>] [<c0108c5f>] 
Code: c6 05 00 00 00 00 00 83 c4 14 89 f6 8b 7c 24 1c 8b 47 18 a8 

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