Bug 443627
| Summary: | kernel dm snapshot: PPC64: kernel OOPS during activation of snapshot with small chunksize | ||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Milan Broz <mbroz> | ||||
| Component: | kernel | Assignee: | Milan Broz <mbroz> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Martin Jenner <mjenner> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 5.2 | CC: | agk, mgahagan, mpatocka, pvrabec | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | ppc64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2009-01-20 20:16:13 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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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 |
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