kern/119868: [zfs] 7.0 kernel panic during boot with ZFS and WD1600JS

Harald Hanche-Olsen hanche at
Wed Oct 1 15:20:04 UTC 2008

The following reply was made to PR kern/119868; it has been noted by GNATS.

From: Harald Hanche-Olsen <hanche at>
To: johan at
Cc: bug-followup at
Subject: Re: kern/119868: [zfs] 7.0 kernel panic during boot with ZFS and
Date: Wed, 01 Oct 2008 17:18:31 +0200 (CEST)

 + Johan A. van Zanten <johan at>:
 > The problem for me is that the panic occured very early in the boot
 > process, before the dump device is normally configured, and no one
 > on the freebsd-help list, nor anyone reading these bug reports
 > seemed to know or care enough to help me get a dump device
 > configured earlier.
 Well, the handbook gives a method that it says is "deprecated"
 (specifying a dump device in the kernel config), but these lines from
         CONFIG System_id System_parameter_list
           = { errx(1, "%s:%d: root/dump/swap specifications obsolete",
               yyfile, yyline);}
 make me think that the handbook itself is obsolete at this point, and
 the "deprecated" method is no longer available.
 If you still have the disk and wish to resurrect it, you can try my
 method: I booted from a ubuntu cd and erased the EFI partition table
 using dd if=/dev/zero bs=512 count=1 seek=1 of=/dev/disk/by-id/...
 (making VERY sure I did not clobber the wrong disk).
 - Harald

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