zpool scrub tank && high file system activity caused crash

Jeremy Chadwick koitsu at freebsd.org
Mon Mar 24 22:38:58 PDT 2008

On Mon, Mar 24, 2008 at 04:23:19PM -0700, Bert JW Regeer wrote:
> I am running FreeBSD 7.0-RELEASE with GENERIC on a AMD XP Athlon 3500+ with 
> 1267 MB of ram, and a GigBit NIC. I am testing out ZFS just for the hell of 
> it, I know, 32 bit is not suggested and runs badly, but it does what it 
> needs to do.
> I was copying large amounts of data for backup purposes from my MacBook Pro 
> to the machine over FTP. At the time I was looking around the man page for 
> zpool, and figured I'd run a zpool scrub just to see how badly it affects 
> performance. It affects it in that it takes down the machine with a dump.

There's been many previous statements from others that heavy I/O on ZFS
results in either a crash or a hard hang, on both i386 and amd64.
You're not alone.

| Jeremy Chadwick                                    jdc at parodius.com |
| Parodius Networking                           http://www.parodius.com/ |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |

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