On Nov 19, 2007 7:05 AM, Tim <linux_geek at comcast.net> wrote:
> Hi,
>
> Well I have a freshly built system with ZFS raidz.
>
> Solaris 10 X86 32bit 8/07 U4 {patched with smpatch}
> Intel P4 2.4 Ghz
> 1GB Ram
> Marvell Technology Group Ltd. MV88SX6081 8-port SATA II PCI-X Controller
> (2) Intel Dual Port 1Gbit nics
>
> I have (5) 300GB disks in a Raidz1 with Zfs.
>
> I've created a couple of FS on this.
>
> /export/downloads
> /export/music
> /export/musicraw
>
> I've shared these out as well.
>
> First with ZFS 'zfs set sharenfs=on'
>
> Then with /etc/dfs/dfstab.
>
> On a Solars 10 client host I would mount that File System Vers=3.
> Then CD to that mountpoint and proceed to run iozone {from Blastwave}
>
>
> # iozone -Racb iozone.`hostname`.wks > iozone.data
>
> Sometime during the test I get a 'NFS server timsnas-nfs not responding still
> trying'
> NFS is dead at this point. To no avail. A reboot of the NFS server is order
> to recover.
>
> The clients mount this share:
> timsnas-nfs:/export/downloads - /mnt/downloads nfs - yes
> vers=3,bg,rsize=8192,wsize=8192,timeo=14,proto=tcp,intr
>
> The Server is set to NFSv3 only:
> # Sets the minimum version of the NFS protocol that will be registered
> # and offered by the server. The default is 2.
> NFS_SERVER_VERSMIN=3
>
> # Sets the maximum version of the NFS protocol that will be registered
> # and offered by the server. The default is 4.
> NFS_SERVER_VERSMAX=3
>
> At this point I have no clue what the issue is....
>
> On the NFS server I've successfully ran 'iozone' 2X.
> I've also ran scrub on this zpool.
>
> Please advise...
>
Look at the kernel messages. I've had trouble with the marvell card in
nevada, with never a resolution, whereby it port resets frequently but
in ms timings. With the load that comes from NFS and never allows the
marvell to reset happily and locks. We resolved this by only using
RAID10 (mirrors striped) which effectively allows port resets on one
port to not take down the card.
Going forward, I'm going to suggest people adopt the LSI SAS/SATA raid
cards for use with ZFS just because the marvell card seems to be worse
for the wear if coupled with an NFS solution.
> Tim
>
>
> This message posted from opensolaris.org
> _______________________________________________
> nfs-discuss mailing list
> nfs-discuss at opensolaris.org
>
