failed to create gmirror with the handbook instructions

Andy Zammy andyzammy at
Tue Oct 8 19:10:25 UTC 2013

On 8 October 2013 01:31, Warren Block <wblock at> wrote:

> On Tue, 8 Oct 2013, Andy Zammy wrote:
>  Hi,
>> I used the second section of the handbook (20.4) to create a gmirror. In
>> my
>> particular setup I had a 1GB /, 6GB swap, 1GB /tmp and the rest of the 1TB
>> drive was left for /usr
>> I had to deviate from the handbook when it came to running the dump +
>> restore commands, as the dump failed due to an issue with the journalling.
>> To get around this problem, I dropped into single user mode, so I could
>> remount root as read-only. The dump commands then worked. It specified in
>> the handbook to restart the machine, and boot from ada1.
>> It was at this point that I noticed something wasn't quite right. There
>> was
>> a spew of 'not found/no such file or directory' messages. These were all
>> trying to reference libs and binaries that live in /usr.
>> I boot into single user mode, and upon checking the other partitions, I
>> notice that /tmp and /usr are empty, apart from a .snap file, and the
>> restoresymtable file.
>> Please could someone help me troubleshoot this problem? Let me know if you
>> need any more info, and I'll post it up asap.
> dump does not work reliably on filesystems with SUJ enabled.  Turn off SUJ
> on the filesystems to be dumped by booting in single-user mode and running
>   tunefs -j disable /dev/ada0whatever
> Do each filesystem, then use dump.

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