ZFS deadlock

[Vince]

It depends a lot on your workload I'd say.
for me its pretty stable on a amd64 7-STABLE box that just does a little 
light mail and web and package building.
for others not so much.

info on my system below if anyones interested.

Vince

(20:12:28 </usr/home/jhary>) 0 $ more /boot/loader.conf
geom_mirror_load=YES
vm.kmem_size="768M"
vm.kmem_size_max="768M"
snd_emu10k1_load=YES
jhary at crab
(20:12:39 </usr/home/jhary>) 0 $ uptime
  8:12PM  up 13 days, 19:16, 5 users, load averages: 1.21, 0.86, 0.44
jhary at crab
(20:12:50 </usr/home/jhary>) 0 $ zfs list
NAME       USED  AVAIL  REFER  MOUNTPOINT
data       164G  64.8G    18K  /data
data/usr   163G  64.8G   163G  /usr
data/var   306M  64.8G   306M  /var
jhary at crab
(20:13:00 </usr/home/jhary>) 0 $ zpool status
   pool: data
  state: ONLINE
  scrub: none requested
config:

         NAME        STATE     READ WRITE CKSUM
         data        ONLINE       0     0     0
           mirror    ONLINE       0     0     0
             ad6s2   ONLINE       0     0     0
             ad4s2   ONLINE       0     0     0

errors: No known data errors

relevent bits from dmesg:

CPU: AMD Opteron(tm) Processor 242 (1594.18-MHz K8-class CPU)
   Origin = "AuthenticAMD"  Id = 0xf5a  Stepping = 10
 
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
   AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>
usable memory = 3210489856 (3061 MB)
avail memory  = 3103461376 (2959 MB)
ACPI APIC Table: <A M I  OEMAPIC >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
  cpu0 (BSP): APIC ID:  0
  cpu1 (AP): APIC ID:  1









Jisakiel wrote:
> ¿So no chances of ZFS stable on FBSD7? I was actually considering debian over freebsd on a dual AMD64, but if there are no settings that will make it stable... Nevertheless I'd be willing to help debugging ZFS on that machine (Dell T105) as soon as I receive it in a couple of weeks, as I'm in no rush to getting it into production (just tell me what to do ;) ).  
> 
> ----- Mensaje original ----
> De: Spike Ilacqua <spike at indra.com>
> Para: Ender <ender at enderzone.com>
> CC: freebsd-fs at freebsd.org; freebsd-stable at freebsd.org; Johan Ström <johan at headweb.com>
> Enviado: martes, 8 de abril, 2008 18:13:32
> Asunto: Re: ZFS deadlock
> 
>> Depending on  your work load you are just buying more time, so 
>> "reasonable" is a matter of perspective. :(  I didn't see if you said 
>> you are on 32bit or 64bit? Keep in mind the kmem max is 1.5-2G on amd64 
>> regardless of how much memory you have. If 512M arcsize crashes too soon 
>> for your tastes you can always lower it down to 256M, or 128M, etc.
> 
> I tried for several weeks to get ZFS stable on a 64bit system with a 
> 1.5G kernel.  The best uptime I ever got was 72 hours, the worst was 2, 
> the average about 24.  Interestingly, most of the hangs were at off 
> hours, when the system was lightly loaded, had lots of free memory, etc. 
>   That suggests to me a slow leak of some sort.
> 
> Anyway, ZFS is not ready for production.  Some people may get lucky, but 
>   you can't count on it.
> 
> Spike
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