freebsd stable - Nov 2019 - Slow zfs destroy

28.11.2019 13:46, Eugene Grosbein wrote:
> Hi!
> 
> Is it normal that "zfs destroy" for one ZVOL with attribute
"used" equal to 2112939808 bytes (~2GB)
> takes over two minutes waiting on "tx_sync_done_cv"? The pool is
RAID1 over five SSDs encrypted with GELI
The pool is *RAIDZ1*
> having ZIL and Cache on distinct unencrypted SSD.
> 
> 11.3-STABLE/amd64 r354667. System has 360G RAM and vfs.zfs.arc_max=160g.

On 28/Nov/2019 07:03, Eugene Grosbein wrote:
> 28.11.2019 13:46, Eugene Grosbein wrote:
> 
>> Hi!
>>
>> Is it normal that "zfs destroy" for one ZVOL with attribute
"used" equal to 2112939808 bytes (~2GB)
>> takes over two minutes waiting on "tx_sync_done_cv"? The pool
is RAID1 over five SSDs encrypted with GELI
> 
> The pool is *RAIDZ1*
Not normal, no. Having said that I have seen zfs destory take a very lng 
time on occasion, but for a 2GB volume then thats surprisng. Is there 
actual disc activity during this time ?

I've been using 12 a while now, and I don't recall seeing this recently,
so maybe its soemthing which has been improved on over 11.

-pete.