kern/171865: [geom] g_wither_washer() keeping a core busy

[Jaakko Heinonen]

The following reply was made to PR kern/171865; it has been noted by GNATS.

From: Jaakko Heinonen <jh at FreeBSD.org>
To: Fabian Keil <fk at fabiankeil.de>
Cc: bug-followup at FreeBSD.org, luigi at FreeBSD.org
Subject: Re: kern/171865: [geom] g_wither_washer() keeping a core busy
Date: Tue, 25 Sep 2012 17:06:54 +0300

 On 2012-09-22, Fabian Keil wrote:
 > I recently found a way to reproduce the problem without using
 > ZFS or writing to the device.
 > >How-To-Repeat:
 > geli onetime /dev/md0
 > geom sched insert -a rr /dev/md0.eli
 > geli detach /dev/md0.eli.sched.
 
 It seems that if you "insert" a sched geom and do "geli detach" on it,
 the geli geom can't be destroyed.
 
 After your commands "md0.eli" still exists:
 
 # geli list
 Geom name: md0.eli
 Providers:
 1. Name: md0.eli
    Mediasize: 10485760 (10M)
    Sectorsize: 512
    Mode: r0w0e0
 # geli detach md0.eli
 geli: No such device: md0.eli.
 
 I didn't find a way to destroy it. I suspect a geom_sched bug. luigi@
 cc'd.
 
 -- 
 Jaakko