Re: kern/40474: Kernel panic after remounting raid root with softdep

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/40474; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: Tero Kivinen <kivinen%iki.fi@localhost>
Cc: David Holland <dholland-bugs%netbsd.org@localhost>, 
kern-bug-people%netbsd.org@localhost,
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
        gnats-bugs%netbsd.org@localhost
Subject: Re: kern/40474: Kernel panic after remounting raid root with
        softdep
Date: Sat, 21 Feb 2009 08:06:27 +0000

 On Tue, Jan 27, 2009 at 03:25:00PM +0200, Tero Kivinen wrote:
  > > The immediate problem appears to be that it's allocating the same
  > > inode twice. I think this is probably happening either because of a
  > > general known problem with mount updates not flushing things properly
  > > (e.g. PR 30525)... or because softdep uses different rules for
  > > handling free object bitmaps from baseline ffs, and after the mode
  > > transition not all filesystem state is arranged the way softdep
  > > expects.
  > 
  > It could be that it is actually crashing on file creation, so
  > allocating inode twice could be the rason (vi creates the recovery
  > file).
 
 If it's ffsv2, it could also conceivably be PR 40525.
 
  > As I said my test machine is already back in use, so cannot do those
  > things anymore... 
 
 Right. Well, I'll put it on the list for softdep... :-|
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost