> - $class->zfs_request($scfg, undef, 'destroy', '-r',
> "$scfg->{pool}/$zvol");
> + open(STDERR, ">/tmp/zfslog.txt");
> + eval { $class->zfs_request($scfg, undef, 'destroy', '-r',
> "$scfg->{pool}/$zvol")};
> + close STDERR;
We have special hooks in run_command to catch stderr.
So please catch this in zfs_request, using 'errfunc' ...