Re: ZFS patches.

kevin wrote:
> Claus Guttesen wrote:
>> On Sun, Jul 27, 2008 at 2:54 PM, Pawel Jakub Dawidek 
>> <pjd_at_freebsd.org> wrote:
>>  
>>> Hi.
>>>
>>>        http://people.freebsd.org/~pjd/patches/zfs_20080727.patch.bz2
>>>
>>> The patch above contains the most recent ZFS version that could be 
>>> found
>>> in OpenSolaris as of today. Apart for large amount of new 
>>> functionality,
>>> I belive there are many stability (and also performance) improvements
>>> compared to the version from the base system.
>>>
>>> Check out OpenSolaris website to find out the differences between base
>>> system version and patch version.
>>>
>>> Please test, test, test. If I get enough positive feedback, I may be
>>> able to squeeze it into 7.1-RELEASE, but this might be hard.
>>>
>>> If you have any questions, please use mailing lists
>>> (freebsd-fs_at_FreeBSD.org would be the best).
>>>     
>>
>> I applied your patch to a current as of July the 31'st. I had to
>> remove /usr/src and perform a clean csup and remove the two empty
>> files as mentioned in this thread.
>>
>> I have a areca arc-1680 sas-card and an external sas-cabinet with 16
>> sas-drives each 1 TB (931 binary GB). They have been setup in three
>> raidz-partitions with five disks each in one zpool and one spare.
>>
>> There does seem to be a speed-improvement. I nfs-mounted a partition
>> from solaris 9 on sparc and is copying approx.400 GB using rsync. I
>> saw write of 429 MB/s. The spikes occured every 10 secs. to begin
>> with. After some minutes I get writes almost every sec. (watching
>> zpool iostat 1). The limit is clearly the network-connection between
>> the two hosts. I'll do some internal copying later.
>>
>> It's to early to say whether zfs is stable (enough) allthough I
>> haven't been able to make it halt unless I removed a disk. This was
>> with version 6. I'll remove a disk tomorrow and see how it goes.
>>
>>   
> Hi,
>    I think the new patch still have some problem.I run zfs on my 
> laptop,and it panic on zfs umount.
>    The problem ( http://www.freebsd.org/cgi/query-pr.cgi?pr=124200 ) 
> relate  to zfs? It alway panic in spa_zio_intr_1 and txg_thread_enter. 
> Benjsc is working on it.If any one interest in problem 124200, you can 
> visit http://www.clearchain.com/~benjsc/downloads/FreeBSD/ .
This issue is not zfs related, zfs however being such a big user of 
threads and condvars, triggers it more often.

Cheers,
    Benjamin