Jonathan Edwards wrote:
>
> On Mar 14, 2008, at 3:28 PM, Bill Shannon wrote:
>> What's the best way to backup a zfs filesystem to tape, where the size
>> of the filesystem is larger than what can fit on a single tape?
>> ufsdump handles this quite nicely. Is there a similar backup program
>> for
On Mar 14, 2008, at 3:28 PM, Bill Shannon wrote:
> What's the best way to backup a zfs filesystem to tape, where the size
> of the filesystem is larger than what can fit on a single tape?
> ufsdump handles this quite nicely. Is there a similar backup program
> for zfs? Or a general tape manageme
On Sun, 16 Mar 2008, Richard Elling wrote:
>
> But where is the bottleneck? iostat will show bottlenecks in the
> physical disks and channels. vmstat or mpstat will show the
> bottlenecks in cpus. To see if the app is the bottleneck will
> require some analysis of the app itself. Is it spending
Bob Friesenhahn wrote:
> On Sat, 15 Mar 2008, Richard Elling wrote:
>>
>> My observation, is that each metaslab is, by default, 1 MByte in
>> size. Each
>> top-level vdev is allocated by metaslabs. ZFS tries to allocate a
>> top-level
>> vdev's metaslab before moving onto another one. So you s
> I do see that all the devices are quite evenly busy. There is no
> doubt that the load balancing is quite good. The main question is if
> there is any actual "striping" going on (breaking the data into
> smaller chunks), or if the algorithm is simply load balancing.
> Striping trades IOPS f
