PPC64 architecture cannot initialize snapshot with chunksize smaller than pagesize (here 64K page) Setting up Logical Volume Management: kernel BUG in mempool_resize at mm/mempool.c:121! cpu 0x1: Vector: 700 (Program Check) at [c0000001633f3250] pc: c0000000000b8a10: .mempool_resize+0x3c/0x254 lr: d000000000627d3c: .dm_io_client_resize+0x24/0x38 [dm_mod] sp: c0000001633f34d0 msr: 8000000000029032 current = 0xc0000001645764f0 paca = 0xc000000000475000 pid = 1854, comm = lvm.static kernel BUG in mempool_resize at mm/mempool.c:121! Volume group was created on i386 this way: DEV=/dev/sdc1 VG=vg_tst pvcreate $DEV vgcreate $VG $DEV lvcreate -L 100M -n lv $VG for i in 4 8 16 32 64 128 256 512 ; do lvcreate -s -c $i -L 12M -n "snap"$i vg_tst/lv done Simple vgscan; vgchange -a y is enough to rerproduce it. Kernel version: Linux ppc-powerv 2.6.18-53.1.14.el5 #1 SMP Tue Feb 19 07:22:57 EST 2008 ppc64 ppc64 ppc64 GNU/Linux
Created attachment 303351 [details] Zero number of pages What about this patch? I can't check that it fixes the bug (don't have PPC), but it looks like a place where "0" count of pages was created.
(In reply to comment #1) > What about this patch? I can't check that it fixes the bug (don't have PPC), > but it looks like a place where "0" count of pages was created. yep, this helps:-)
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
in kernel-2.6.18-99.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5
*** Bug 461506 has been marked as a duplicate of this bug. ***
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2009-0225.html