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Hi, |
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I am using Gentoo Linux as an NFS server while doing development on an |
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Blackfin embedded system. The Blackfin is running uClinux and the |
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development host is Gentoo testing version (~amd64). The NFS server |
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version is 1.2.7. |
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Here is the problem that I am observing: I start from a known state, |
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restarting the NFS server on Gentoo and power cycling the Blackfin. Once |
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the Blackfin system has booted, I mount an folder on the Blackfin. This |
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succeeds without any problem. Then I power cycle the Blackfin again and |
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after it is up, I try to mount that same folder again. But this time, |
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the mount command hangs for a minute or so and eventually fails with a |
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timeout error. |
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Here is the mount command: |
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mount -o nolock,tcp 10.2.2.254:/romfs_2011R1 /mnt |
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When I look into the NFS server's system log, I can see that the mount |
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was authenticated: |
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|
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Jun 30 13:54:53 bonsai rpc.mountd[1597]: authenticated mount request |
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from 10.2.2.220:911 for /home/ta/uclinux_2011R1/db1/uclinux-dist/romfs |
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(/home/ta/uclinux_2011R1) |
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|
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I have captured what is happening using wireshark and what I am seeing |
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is that the mount request succeeds, but the client initiates another TCP |
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connection (SYN) and this SYN is never responded to by the server. |
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I know that a sm-notify program is used on both NFS clients/servers to |
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notify reboots, but this embedded system does not have the sm-notify |
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capability. And I would rather not try to port it to uClinux. |
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So, my question is, can I somehow configure the NFS server to allow |
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mounting the same directory repeatedly whenever the NFS client reboots? |
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|
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-- |
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Timur |
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