scrambled (gmirror) dmesg output

Jeremy Chadwick koitsu at
Sat Dec 1 03:57:25 PST 2007

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...

| Jeremy Chadwick                                    jdc at |
| Parodius Networking                  |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |

More information about the freebsd-fs mailing list