Can not read from ZFS exported over NFSv4 but write to it

[Rick Macklem]

Yamagi Burmeister wrote:
> Hello :)
> 
> On Thu, 25 Oct 2012 11:03:44 -0700
> YongHyeon PYUN <pyunyh at gmail.com> wrote:
> 
> > age(4) is cheap and consumer grade controller but it shows
> > good performance on various network loads. It's much better choice
> > than using other cheap controllers.
> >
> > Would you show me dmesg output(age(4) and atphy(4) only)?
> > And try disabling TSO or TX checksum offloading and see whether
> > that makes any difference.
> > I remember age(4) had a 64bit DMA bug but it was fixed long
> > time ago.
> 
> Yeah I was the one who reported it. This is the same machine...
> If disabled TSO and it seems to work. I've copied ~10GB from
> the client to the server and the other way round without any
> problem.
> 
Just in case it might be related, the client will sosend() a
segment just a little over 64Kbytes in size for writes. (I vaguely
remember a recent thread related to TSO of segments a little over
64Kbytes. I don't know if that issue was specific to one type of
network interface.)

Good luck with it, rick

> The dmesg (with verbose boot enabled) is:
> 
> age0: <Attansic Technology Corp, L1 Gigabit Ethernet> mem
> 0xfeac0000-0xfeafffff irq 18 at device 0.0 on pci2 age0: PCI device
> revision : 0x00b0 age0: Chip id/revision : 0x9006
> age0: 1280 Tx FIFO, 2364 Rx FIFO
> age0: MSIX count : 0
> age0: MSI count : 1
> age0: attempting to allocate 1 MSI vectors (1 supported)
> msi: routing MSI IRQ 256 to local APIC 0 vector 48
> age0: using IRQ 256 for MSI
> age0: Using 1 MSI messages.
> age0: Read request size : 512 bytes.
> age0: TLP payload size : 128 bytes.
> age0: 4GB boundary crossed, switching to 32bit DMA addressing mode.
> age0: PCI VPD capability not found!
> miibus0: <MII bus> on age0
> atphy0: <Atheros F1 10/100/1000 PHY> PHY 0 on miibus0
> atphy0: OUI 0x00c82e, model 0x0001, rev. 5
> atphy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
> 1000baseT-FDX, 1000baseT-FDX-master, auto age0: bpf attached
> age0: Ethernet address: 00:23:54:31:a0:12
> pci3: driver added
> age0: link state changed to DOWN
> age0: interrupt moderation is 100 us.
> age0: link state changed to UP
> 
> Ciao,
> Yamagi
> 
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