MicroMemory 5425CN support and ZFS + NFS

Erich Jenkins, Fuujin Group Ltd erich at fuujingroup.com
Wed Apr 14 03:28:59 UTC 2010


Not sure if the NAND drivers being written at 
http://wiki.freebsd.org/NAND apply to this device or not. It appears 
this is more of a simulator at the moment and an experimental framework. 
Is there any current support for the MM-5425CN series NAND flash cards 
in FreeBSD? These seem like they'd be excellent for a separate ZIL in a 
ZFS raidz config if installed in pairs for mirroring...

Here's the pciconf probe of the device in question:

none3 at pci0:6:2:0:       class=0x058000 card=0x00000000 chip=0x54251332 
rev=0x06 hdr=0x00
     vendor     = 'Micro Memory'
     device     = 'MM-5425CN PCI 64/66 Memory Module with Battery Backup'
     class      = memory

Also, does anyone have any direct experience with ZFS + NFS? It seems 
like there's some disagreement on whether or not this taxes the host 
machine to the point that performance drops off significantly.


-- 
Erich M. Jenkins
Fuujin Group Limited

"You should never, never doubt what no one is sure about."
-- Gene Wilder


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