kern/129674: gjournal root did not mount on boot

[Patrick Lamaizière]

Le Tue, 16 Dec 2008 11:19:43 GMT,
Alexei Volkov <Alexei.Volkov at softlynx.ru> a écrit :

> 
> >Number:         129674
> >Category:       kern
> >Synopsis:       gjournal root did not mount on boot
> >Confidential:   no
> >Severity:       serious
> >Priority:       low
> >Responsible:    freebsd-bugs
> >State:          open
> >Quarter:        
> >Keywords:       
> >Date-Required:
> >Class:          sw-bug
> >Submitter-Id:   current-users
> >Arrival-Date:   Tue Dec 16 11:20:01 UTC 2008
> >Closed-Date:
> >Last-Modified:
> >Originator:     Alexei Volkov
> >Release:        7.1-PRERELEASE
> >Organization:
> SoftLynx
> >Environment:
> FreeBSD testhost7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #6 r185330: Wed
> Nov 26 14:12:01 MSK 2008
> root at testhost:/usr/obj/usr/src/sys/GENERIC  amd64
> 
> >Description:
> Under certain conditions the system did not boot from the single
> journaled root and fall into 
> 
> ad0: 10240MB <QEMU HARDDISK 0.9.1> at ata0-master WDMA2
> ad1: 10240MB <QEMU HARDDISK 0.9.1> at ata0-slave WDMA2
> GEOM_MIRROR: Device mirror/vol0 launched (1/2).
> GEOM_MIRROR: Device vol0: rebuilding provider ad1.
> GEOM_JOURNAL: Journal 4069545828: mirror/vol0a contains data.
> GEOM_JOURNAL: Journal 4069545828: mirror/vol0a contains journal.
> acd0: CDROM <QEMU DVD-ROM/0.9.1> at ata1-master WDMA2
> Trying to mount root from ufs:/dev/mirror/vol0a.journal
> 
> Manual root filesystem specification:
> <fstype>:<device>  Mount <device> using filesystem <fstype>
> eg. ufs:da0s1a
> ?                  List valid disk boot devices
> <empty line>       Abort manual input
> 
> mountroot> ?
> 
> List of GEOM managed disk devices:
> mirror/vol0c mirror/vol0b mirror/vol0a mirror/vol0 ad1 ad0
> 
> >How-To-Repeat:
> Prepare the filesystem as desribed 
> 
> gmirror label vol0 /dev/ad0 /dev/ad1
> 
> cat <<LABEL >/tmp/label
> a:    *     *   unused
> b:    1G    *   unused
> c:    *     *   unused
> LABEL
> 
> 
> disklabel -B -R /dev/mirror/vol0 /tmp/label
> gjournal label /dev/mirror/vol0a
> newfs -J /dev/mirror/vol0a.journal
> tunefs -a enable /dev/mirror/vol0a.journal
> 
> And install the system to that way prepared root.
> 
> After booting into it run
> 
> dd if=/dev/random of=/tmp/dump bs=16384
> 
> and press reset button.
> 
> Repeat the unexpected reset condition until the issue will appeared.
> In my case there was several attempts before reach the state.
> 
> The issue was initially discovered from the real running hardware.
> 
> 
> >Fix:
> There is no known fix, but some workaround. Boot into any FreeBSD
> livecd and 
> 
> kldload geom_mirror
> kldload geom_journal
> 
> After the message GEOM_JOURNAL: Journal mirror/vol0a consistent will
> appear reboot back from HDD.

Looks the same as PR 128529
http://www.freebsd.org/cgi/query-pr.cgi?pr=128529 

There is a fix for CURRENT:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/geom/journal/g_journal.c#rev1.18