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Bug 889973 - "kernel: device-mapper: table: 253:3: snapshot-origin: unknown target type"
Summary: "kernel: device-mapper: table: 253:3: snapshot-origin: unknown target type"
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.4
Hardware: All
OS: Linux
low
high
Target Milestone: rc
: ---
Assignee: Mikuláš Patočka
QA Contact: Petr Beňas
URL:
Whiteboard:
Depends On:
Blocks: 961662
TreeView+ depends on / blocked
 
Reported: 2012-12-24 08:35 UTC by Chao Yang
Modified: 2015-01-04 23:03 UTC (History)
14 users (show)

Fixed In Version: kernel-2.6.32-375.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-11-21 14:27:45 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:1645 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 6 kernel update 2013-11-20 22:04:18 UTC

Description Chao Yang 2012-12-24 08:35:39 UTC 
Description of problem:
When I create snapshot-origin mapping type target through dmsetup command, it fails.

Version-Release number of selected component (if applicable):
# rpm -q kernel
kernel-2.6.32-348.el6.x86_64
# rpm -q device-mapper
device-mapper-1.02.77-5.el6.x86_64


How reproducible:
100%

Steps to Reproduce:
1. Using loop device to simulate block device.
2. try to create snapshot-origin mapping target using
# dmsetup create --table "0 2097152 snapshot-origin /dev/loop5" dm-ssorigin
device-mapper: reload ioctl on dm-ssorigin failed: Invalid argument
Command failed
  
Actual results:
Dec 24 03:31:05 intel-s3e37-01 kernel: device-mapper: table: 253:3: snapshot-origin: unknown target type
Dec 24 03:31:05 intel-s3e37-01 kernel: device-mapper: ioctl: error adding target to table

Expected results:
The target should be created successfully. 

Additional info:
Comment 1 Chao Yang 2012-12-24 08:59:15 UTC 
Seems problem with kernel module dm_snapshot, if I load the module manually, then the snapshot-origin target will be created successfully. 

# modprobe dm_snapshot
# dmsetup create --table "0 2097152 snapshot-origin /dev/loop5" dm-ssorigin
# dmsetup ls
dm-ssorigin	(253:4)
dm-mirror	(253:3)
vg_intels3e3701-lv_home	(253:2)
vg_intels3e3701-lv_swap	(253:1)
vg_intels3e3701-lv_root	(253:0)

But I guess this is the wrong way. The kernel module should be automatically loaded.
Comment 2 Alasdair Kergon 2012-12-27 13:52:01 UTC 
lvm always loads a module it needs before using it, but auto-loading should work too.

More MODULE_ALIASes perhaps?
Comment 3 RHEL Program Management 2013-04-12 02:09:49 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in a Red Hat Enterprise Linux release.  Product
Management has requested further review of this request by
Red Hat Engineering, for potential inclusion in a Red Hat
Enterprise Linux release for currently deployed products.
This request is not yet committed for inclusion in a release.
Comment 4 Jarod Wilson 2013-05-08 20:31:10 UTC 
Patch(es) available on kernel-2.6.32-375.el6
Comment 13 Petr Beňas 2013-08-01 11:53:54 UTC 
Reproduced in 2.6.32-369.el6.x86_64 and verified in 2.6.32-370.el6.x86_64.
Comment 14 errata-xmlrpc 2013-11-21 14:27:45 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-1645.html
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