On Mon, April 16, 2012 22:42, Andriy Bakay wrote:
> On 2012-04-16, at 13:32 , Nenhum_de_Nos wrote:
>
>> hail,
>>
>> I have a soekris running an atom and 2GB RAM and ZFS using 7 drives, small 
>> capacity though, to
>> test and study if I can make my home server this box and this way. It will 
>> be a simple server,
>> three users tops.
>>
>> I followed the handbook and made the geli step on the disks:
>>
>> Geom name: label/zfs1.eli
>> State: ACTIVE
>> EncryptionAlgorithm: AES-XTS
>> KeyLength: 128
>> Crypto: software
>> UsedKey: 0
>> Flags: NONE
>> KeysAllocated: 38
>> KeysTotal: 38
>> Providers:
>> 1. Name: label/zfs1.eli
>>   Mediasize: 160041881600 (149G)
>>   Sectorsize: 4096
>>   Mode: r1w1e1
>> Consumers:
>> 1. Name: label/zfs1
>>   Mediasize: 160041885184 (149G)
>>   Sectorsize: 512
>>   Mode: r1w1e1
>>
>>
>> all disks are this way (just 4 disks are on geli zfs).
>>
>> would it be faster, if I had geli over zfs, and not the other way (as is 
>> now) ?
>>
>> my performance is too low (I know the hardware is not that much, but I 
>> compared it to a friend's
>> arm based AP-Router gadget and my setup is when much equal. I have 1.6 GHz 
>> Atom and 2GB ram, he
>> has not half this ... I know can't compare arm and x86 clock for clock ...)
>>
>> I'll try to run geli on single disk, to see how much ZFS is impacting on 
>> performance, but, is
>> there any other way around ? All I want is RAID5, and FreeBSD has not 
>> developed RAID5 from GEOM
>> (AFAIK) since a long time. ZFS is the way people go in recent years.
>>
>> suggestions are welcome, just want to upgrade my old 8.0 BETA3 using geom 
>> mirror/stripe to a
>> newer
>> approach that would be supported by FreeBSD.
>>
>> I have an external enclosure for 4 SATA disks (port multiplier included) 
>> using 4 disks, another
>> port multiplier 5x1 using now 3 disks, and:
>>
>> ahci1@pci0:13:0:0:   class=0x010601 card=0x10601b21 chip=0x06121b21 rev=0x01 
>> hdr=0x00
>>    vendor     = 'ASMedia Technology Inc.'
>>    class      = mass storage
>>    subclass   = SATA
>>
>> with two eSATA to the Port Multipliers.
>>
>> thanks,
>>
>> matheus
>>
>> machine:
>> ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237)
>> Copyright (c) 1992-2012 The FreeBSD Project.
>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>>      The Regents of the University of California. All rights reserved.
>> FreeBSD is a registered trademark of The FreeBSD Foundation.
>> FreeBSD 9.0-RELEASE #0: Wed Apr 11 13:04:15 BRT 2012
>>    root@macgyver:/usr/obj/usr/src/sys/net6501-amd64 amd64
>> ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237)
>> CPU: Genuine Intel(R) CPU        @ 1.60GHz (1600.04-MHz K8-class CPU)
>>  Origin = "GenuineIntel"  Id = 0x20661  Family = 6  Model = 26  Stepping = 1
>>  
>> Features=0xbfe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>>  
>> Features2=0x40e3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,MOVBE>
>>  AMD Features=0x20100800<SYSCALL,NX,LM>
>>  AMD Features2=0x1<LAHF>
>>  TSC: P-state invariant, performance statistics
>> real memory  = 2147352576 (2047 MB)
>> avail memory = 2046488576 (1951 MB)
>> MPTable: <Soekris  net6501     >
>> Event timer "LAPIC" quality 400
>> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>> FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 HTT threads
>> cpu0 (BSP): APIC ID:  0
>> cpu1 (AP/HT): APIC ID:  1
>> ioapic0: Assuming intbase of 0
>> ioapic0 <Version 2.0> irqs 0-23 on motherboard
>> kbd0 at kbdmux0
>> ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237)
>> ACPI: Table initialisation failed: AE_NOT_FOUND
>> ACPI: Try disabling either ACPI or apic support.
>> cryptosoft0: <software crypto> on motherboard
>>
>> --
>> We will call you Cygnus,
>> The God of balance you shall be
>>
>> A: Because it messes up the order in which people normally read text.
>> Q: Why is top-posting such a bad thing?
>>
>> http://en.wikipedia.org/wiki/Posting_style
>> _______________________________________________
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>> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
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>
> The ideal solution will be ZFS with crypto support, but unfortunately this is 
> only available on
> Oracle Sun 5.11 for now.
>
> The GELI is very good, but it is mostly for single device/file image 
> encryption. Each new GELI
> device in the ZFS mirror/RAIDZ configuration will add extra overhead.
>
> GELI on top of ZFS volume/file-backed will be even worse.
>
> You could consider PEFS from ports on top of any ZFS pool. PEFS is a kernel 
> level stacked
> cryptographic filesystem for FreeBSD:
>
> http://www.freshports.org/sysutils/pefs-kmod/
> http://wiki.freebsd.org/PEFS
> https://github.com/glk/pefs
>
> P.S. ZFS RAIDZ1/RAIDZ2 pool is more sophisticated solution than RAID5/RAID6.

Thanks Andriy, I'll read about it. Can I consider this PEFS so stable as GELI ?

thanks,

matheus

-- 
We will call you Cygnus,
The God of balance you shall be

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

http://en.wikipedia.org/wiki/Posting_style
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