kern/189355: [zfs] zfs panic on root mount 10-stable

Fri May 23 17:30:01 UTC 2014

The following reply was made to PR kern/189355; it has been noted by GNATS.

From: Radim Kolar <hsn at sendmail.cz>
To: Steven Hartland <killing at multiplay.co.uk>, "bug-followup at freebsd.org"
	<bug-followup at freebsd.org>, "freebsd-fs at freebsd.org" <freebsd-fs at freebsd.org>
Cc:  
Subject: RE: kern/189355: [zfs] zfs panic on root mount 10-stable
Date: Fri, 23 May 2014 17:23:03 +0000

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 its not just about building custom kernel. GENERIC from 10-STABLE panics on=
  i386 mount ZFS root too.

 Maybe ZFS should not be used on i386=2C but it should not panic system. If =
 you are against changing default kernel configuration on i386 then add anot=
 her warning to boot messages similar to this:

 ZFS WARNING: Recommended minimum kmem_size is 512MB=3B expect unstable beha=
 vior.
              Consider tuning vm.kmem_size and vm.kmem_size_max
              in /boot/loader.conf.
  		 	   		  =

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 <body class=3D'hmmessage'><div dir=3D'ltr'>its not just about building cust=
 om kernel. GENERIC from 10-STABLE panics on i386 mount ZFS root too.<br><br=
 >Maybe ZFS should not be used on i386=2C but it should not panic system. If=
  you are against changing default kernel configuration on i386 then add ano=
 ther warning to boot messages similar to this:<br><br>ZFS WARNING: Recommen=
 ded minimum kmem_size is 512MB=3B expect unstable behavior.<br>&nbsp=3B&nbs=
 p=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=
 =3B&nbsp=3B Consider tuning vm.kmem_size and vm.kmem_size_max<br>&nbsp=3B&n=
 bsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=
 =3B&nbsp=3B in /boot/loader.conf.<br> 		 	   		  </div></body>
 </html>=

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