Re: Setting sysctl vfs.zfs.arc_max failed: 22

I actually have this same problem.
I'll send more details when I get home later.

I think the problem started for me after r302265.
Before that, I can set vfs.zfs.arc_max and vfs.zfs.arc_min in loader.conf.
After r302265, setting either vfs.zfs.arc_max or vfs.zfs.arc_min in
loader.conf results in the EINVAL errors in 'dmesg':

Setting sysctl vfs.zfs.arc_max failed: 22
Setting sysctl vfs.zfs.arc_min failed: 22

But setting vfs.zfs.arc_meta_limit in loader.conf works fine.

But I did notice that using 'sysct' or sysctl.conf for vfs.zfs.arc_max and
vfs.zfs.arc_min works.
I only have problems with setting them now in loader.conf.

Like I said, I'll try to send output from my setup later.

Thanks.

On Tue, Jul 5, 2016 at 6:10 PM, Steven Hartland <steven_at_multiplay.co.uk>
wrote:

> What is it currently?
>
> Just had a quick play here:
> sysctl vfs.zfs.arc_max
> vfs.zfs.arc_max: 32283127808
> sysctl vfs.zfs.arc_max=32283127807
> vfs.zfs.arc_max: 32283127808 -> 32283127807
> sysctl vfs.zfs.arc_max=32283127808
> vfs.zfs.arc_max: 32283127807 -> 32283127808
>
> Error 22 = EINVAL so I suspect you're requesting a value which one of the
> following:
> * < arc_abs_min
> * > kmem_size
> * < arc_c_min
> * < zfs_arc_meta_limit
>
>     Regards
>     Steve
>
> On 05/07/2016 22:56, Eric van Gyzen wrote:
>
>> Steven and -current:
>>
>> I just updated to r302350 with a GENERIC kernel config.  I see this in
>> dmesg:
>>
>>      VT(efifb): resolution 1024x768
>>      Setting sysctl vfs.zfs.arc_max failed: 22
>>      CPU: Intel(R) Xeon(R) CPU E5-1650 v3 _at_ 3.50GHz (3491.98-MHz K8-class
>>      CPU)
>>
>> The relevant parts of /boot/loader.conf are:
>>
>>      zfs_load="YES"
>>      vfs.zfs.arc_max="6442450944"
>>
>> Let me know what other information you need.
>>
>> Cheers,
>>
>> Eric
>>
>>
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