Bug 1388962 - Prevent activation of RAID4 with kernels not supporting proper mapping
Summary: Prevent activation of RAID4 with kernels not supporting proper mapping
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2
Version: 7.3
Hardware: x86_64
OS: Linux
high
urgent
Target Milestone: rc
: ---
Assignee: Heinz Mauelshagen
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On: 1385149 1386184 1386194
Blocks: 1395563
TreeView+ depends on / blocked
 
Reported: 2016-10-26 15:00 UTC by Heinz Mauelshagen
Modified: 2021-09-03 12:52 UTC (History)
13 users (show)

Fixed In Version: lvm2-2.02.169-1.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1386184
: 1395563 (view as bug list)
Environment:
Last Closed: 2017-08-01 21:49:49 UTC
Target Upstream Version:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2017:2222 0 normal SHIPPED_LIVE lvm2 bug fix and enhancement update 2017-08-01 18:42:41 UTC

Comment 1 Heinz Mauelshagen 2016-10-26 15:04:39 UTC
This bz is coping with rejecting raid4 activation and conversion to/from on dm-raid target 1.[89].0 which does not provide correct raid4 mapping.

Comment 2 Heinz Mauelshagen 2016-10-27 09:43:03 UTC
Upstream commit ff05ed7afd16

Comment 3 Heinz Mauelshagen 2016-11-15 18:03:04 UTC
Corey,

test with creating a raid4 LV with raid target versions 1.[89].0 (e.g. kernel-3.10.0-515.el7) or converting to raid4 which gets rejected with
"RAID module does not support RAID4.".

Comment 7 Corey Marthaler 2016-11-17 23:56:34 UTC
Filed bug 1396309 for the raid10 version of this issue that was originally mentioned in bug 1385149.

Comment 9 Roman Bednář 2017-05-16 08:47:24 UTC
Marking verified. Raid 4 volume activation is prevented when using
incompatible versions of raid dm target and lvm2.

=============================================

Initial packages (RHEL7.2):
	3.10.0-327.el7.x86_64
	lvm2-2.02.130-5.el7.x86_64

# dmsetup targets|grep raid
raid             v1.7.0


# lvs -a -o lv_name,segtype,devices -S vg_name=vg
  LV               Type   Devices                                                                
  raid4            raid4  raid4_rimage_0(0),raid4_rimage_1(0),raid4_rimage_2(0),raid4_rimage_3(0)
  [raid4_rimage_0] linear /dev/sda(1)                                                            
  [raid4_rimage_1] linear /dev/sdb(1)                                                            
  [raid4_rimage_2] linear /dev/sdc(1)                                                            
  [raid4_rimage_3] linear /dev/sdd(1)                                                            
  [raid4_rmeta_0]  linear /dev/sda(0)                                                            
  [raid4_rmeta_1]  linear /dev/sdb(0)                                                            
  [raid4_rmeta_2]  linear /dev/sdc(0)                                                            
  [raid4_rmeta_3]  linear /dev/sdd(0)      

# vgchange -an vg

BEFORE PATCH:
Upgrade to 3.10.0-514.el7 and lvm2-2.02.166-1.el7

# dmsetup targets|grep raid
raid             v1.9.0

# pvscan --cache

# pvscan
  PV /dev/sdi    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdg    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdf    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sda    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdh    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdc    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdb    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdd    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sde    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdj    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/vda2   VG rhel_virt-369   lvm2 [7.51 GiB / 40.00 MiB free]
  Total: 11 [407.43 GiB] / in use: 11 [407.43 GiB] / in no VG: 0 [0   ]

# lvchange -ay vg/raid4
  device-mapper: reload ioctl on (253:22) failed: Invalid argument


May 16 10:31:10 virt-369 kernel: device-mapper: raid: Reshaping/takeover raid sets not yet supported. (raid level/stripes/size change)
May 16 10:31:10 virt-369 kernel: device-mapper: table: 253:22: raid: Unable to assemble array: Invalid superblocks
May 16 10:31:10 virt-369 kernel: device-mapper: ioctl: error adding target to table
May 16 10:31:10 virt-369 multipathd: dm-22: remove map (uevent)
May 16 10:31:10 virt-369 multipathd: dm-22: remove map (uevent)


AFTER PATCH:
Upgrade to lvm2-2.02.171-1.el7.x86_64

# dmsetup targets|grep raid
raid             v1.9.0

# uname -r
3.10.0-514.el7.x86_64

# pvscan --cache

# pvscan
  PV /dev/sdi    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdg    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdf    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sda    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdh    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdc    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdb    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdd    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sde    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/sdj    VG vg              lvm2 [39.99 GiB / 39.88 GiB free]
  PV /dev/vda2   VG rhel_virt-369   lvm2 [7.51 GiB / 40.00 MiB free]
  Total: 11 [407.43 GiB] / in use: 11 [407.43 GiB] / in no VG: 0 [0   ]

# lvchange -ay vg/raid4
  RAID module does not support RAID4.
  Failed to activate raid4 LV vg/raid4

=============================================

Comment 10 errata-xmlrpc 2017-08-01 21:49:49 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.

https://access.redhat.com/errata/RHBA-2017:2222


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