On Fri, 14 Nov 2008, Andre Noll wrote:

On 18:58, Justin Piszcz wrote:

Please try the patch below which fixes this inconsistency.

Andre

commit 6c2f32376c59f08a893cd4736d92f000618dd88f
Author: Andre Noll [off-list ref]
Date:   Fri Nov 14 13:31:56 2008 +0100

   Improve raid printout for raid levels 4 and 6.

   As noted by Justin Piszcz we currently log a "RAID5 conf printout:" message
   also for raid4 and raid6 arrays. This trivial patch prints the correct raid
   level, adds KERN_INFO to all printk's in print_raid5_conf() and fixes a minor
   coding style issue.

   Signed-off-by: Andre Noll [off-list ref]

[ patch ]

# patch -p1 < /home/jpiszcz/patch 
patching file drivers/md/raid5.c
Hunk #1 succeeded at 4302 (offset -41 lines).

Ok, fixed some of them but not all:

before (vanilla 2.6.27.5/6):

[   21.404744] raid5: allocated 10568kB for md3
[   21.406935] raid5: raid level 6 set md3 active with 8 out of 10 devices, algo
rithm 2
[   21.409239] RAID5 conf printout:
                ^^^^^
[   21.411544]  --- rd:10 wd:8
[   21.413812]  disk 0, o:1, dev:sdd1
[   21.416068]  disk 1, o:1, dev:sdk1
[   21.418345]  disk 2, o:1, dev:sde1
[   21.420621]  disk 3, o:1, dev:sdf1
[   21.422836]  disk 6, o:1, dev:sdg1
[   21.424941]  disk 7, o:1, dev:sdh1
[   21.426926]  disk 8, o:1, dev:sdl1
[   21.428824]  disk 9, o:1, dev:sdi1

after: (with your patch):

[   21.430884] raid5: allocated 10568kB for md3
[   21.433023] raid5: raid level 6 set md3 active with 10 out of 10 devices, algorithm 2
[   21.435236] RAID6 printout:
                ^^^^^ patch fixed this one, but it still says raid5 in other
                      parts of the code
[   21.437316]  --- rd:10 wd:10
[   21.439291]  disk 0, o:1, dev:sdd1
[   21.441204]  disk 1, o:1, dev:sdk1
[   21.443013]  disk 2, o:1, dev:sde1
[   21.444749]  disk 3, o:1, dev:sdf1
[   21.446383]  disk 4, o:1, dev:sdc1
[   21.447937]  disk 5, o:1, dev:sdj1
[   21.449444]  disk 6, o:1, dev:sdg1
[   21.450873]  disk 7, o:1, dev:sdh1
[   21.452276]  disk 8, o:1, dev:sdl1
[   21.453618]  disk 9, o:1, dev:sdi1

Here is the current output that still contains 'raid5':

$ dmesg | grep -i raid5
[   19.881548] md: raid5 personality registered for level 5
[   21.408354] raid5: device sdl1 operational as raid disk 8
[   21.410583] raid5: device sdk1 operational as raid disk 1
[   21.412789] raid5: device sdj1 operational as raid disk 5
[   21.414994] raid5: device sdi1 operational as raid disk 9
[   21.417217] raid5: device sdh1 operational as raid disk 7
[   21.419420] raid5: device sdg1 operational as raid disk 6
[   21.421622] raid5: device sdf1 operational as raid disk 3
[   21.423810] raid5: device sde1 operational as raid disk 2
[   21.425970] raid5: device sdd1 operational as raid disk 0
[   21.428090] raid5: device sdc1 operational as raid disk 4
[   21.430884] raid5: allocated 10568kB for md3
[   21.433023] raid5: raid level 6 set md3 active with 10 out of 10 devices, algorithm 2


Justin.