scrambled (gmirror) dmesg output

[Johan Ström]

On Dec 1, 2007, at 12:37 , Jeremy Chadwick wrote:

> On Sat, Dec 01, 2007 at 12:16:45PM +0100, Johan Ström wrote:
>> Hello
>> Im playing with a new box running RELENG_7.0 from yesterday. I got  
>> two
>> discs with gmirror on ad[6|14]s1a and zfs-mirror on s1d. When o do
>> atacontrol detach ata7 (detach ad14), i get this in dmesG:
>>
>> (first time)
>> subdisk14: detached
>> ad14: detached
>> GEOM_MIRROR: Device gm1b: provider ad14s1bG  
>> dEiOsMc_oMnInReRcOtRe:d .De
>> vice gm1: provider ad14s1a disconnected.
>>
>> (second time, detaching again after reattach)
>> subdisk14: detached
>> ad14: detached
>> GEOMG_EMOIMR_RMOIRR:R ORD:e viDceev icgem 1bg:m 1p:r opvriodveird era
>> d1a4ds114bs 1dai sdciosncnoencnteecdt.ed.
>>
>> huh? :) Some print raceing or something?
>
> The problem isn't specific to GEOM or ZFS.  It's a known issue with  
> two
> kernel printf()s being called simultaneously.  There are older threads
> discussing the issue.  I can dig up URLs if you want to read them,  
> but I
> don't have them available quickly...

Just what I thought then. Just have never seen it 6.x (where I use  
gmirror) so I was a bit curious.

Btw, zfs doesnt seem to be very "chatty" in dmesg? Ie loosing discs,  
starting to rebuild discs etc... Isnt that something one would want  
in logs?

Thanks!

>
> -- 
> | Jeremy Chadwick                                    jdc at  
> parodius.com |
> | Parodius Networking                           http:// 
> www.parodius.com/ |
> | UNIX Systems Administrator                      Mountain View,  
> CA, USA |
> | Making life hard for others since 1977.                  PGP:  
> 4BD6C0CB |
>