kern/84498: file system hangs when jail starts if unionfs is
involved
Marc G. Fournier
scrappy at hub.org
Thu Aug 4 05:20:12 GMT 2005
The following reply was made to PR kern/84498; it has been noted by GNATS.
From: "Marc G. Fournier" <scrappy at hub.org>
To: bug-followup at FreeBSD.org
Cc:
Subject: Re: kern/84498: file system hangs when jail starts if unionfs is
involved
Date: Thu, 4 Aug 2005 02:19:37 -0300 (ADT)
Just having found the vfs.uniondebug option, I've enabled this before
starting the jail in order to try and get some more information ... the
complete log is 3147 lines long, so am only including the part at which
the 'trace' ends (ie. the point at which the sendmail process hangs) ...
if more is desired, please let me know ...
Create 0xc4c82dd0 = 0xc4c85000 0xc3da2550 refs=3
Out 0 vpp 0xc4c82dd0/3 lower 0 upper 0
A 0xc4c85000
parentdir 0xc4c85000 result 0xc4c82aa0 flag 120c04c
uerror 0 upperdvp 0xc4c85000 4/2, uppervp 0xc4c82aa0 ref=2/lck=2
B 0xc3da2550
parentdir 0xc3da2550 result 0xc4c82cc0 flag 120c04c
Modify existing un 0xc3307100 vn 0xc4c82bb0 upper 0xc4c82aa0(refs 2) -> 0xc4c82aa0(refs 2)
Create 0xc4c82bb0 = 0xc4c82aa0 0xc4c82cc0 refs=1
Out 0 vpp 0xc4c82bb0/1 lower 0 upper 0
union_root UPPERVP 0xc4c39220 locked = 0
Modify existing un 0xc2937a80 vn 0xc4c38770 upper 0xc4c39220(refs 11) -> 0xc4c39220(refs 11)
error 0
union_root2 UPPERVP 0xc4c39220 locked = 0
A 0xc4c39220
parentdir 0xc4c39220 result 0xc381f550 flag 100404c
uerror 0 upperdvp 0xc4c39220 11/2, uppervp 0xc381f550 ref=8/lck=2
B 0xc2d19220
parentdir 0xc2d19220 result 0xc33e5cc0 flag 100404c
union_root UPPERVP 0xc4c39220 locked = 0
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy at hub.org Yahoo!: yscrappy ICQ: 7615664
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