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I've got Solaris 11 installed on an HP X1600 and I've recently been experiencing a strange issue where the whole system appears to hang, with no clue being given in the log files or on the console.

This has started to happen every few days, at no specific time of day or day of the week. The system is still responsive to pings, but not to any other services - all NFS shares go down, CIFS shares become inaccessible, I can no longer SSH in.

The system went down at around 9am this morning - I know this because this is when cacti stopped drawing graphs for this host. The latest thing displayed on the console is:

Jan  1 02:00:05 hostname smbsrv: NOTICE: [hostname\guest]: filestream.hdr share not found
Jan  1 02:01:03 last message repeated 40 times
Jan  1 02:03:19 hostname smbsrv: NOTICE: [hostname\guest]: filestream.hdr share not found
Jan  1 02:04:50 last message repeated 8 times

That's it. It echos characters back to me on the console when I type, but nothing seems to actually do anything. It requires a hard reset to get it back again.

CPU / memory usage looked normal from cacti.

Where do I even begin to troubleshoot this?

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Is there any particular interval between the hangs? Do you have a share called filstream.hdr on the system? –  Iain Jan 1 '12 at 18:25
    
No particular interval. It's happened twice in 2 days, but also gone weeks without happening. There is no filestream.hdr share, and I can't figure out how to get smbsrv to tell me what client's making that request. –  growse Jan 1 '12 at 18:30
    
Let me guess - this box uses ZFS with compression and/or dedupe turned on? –  Lester Cheung Jun 5 '12 at 14:19
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