NAS hanging near startup - net.inet.tcp.delayed_ack

[norskman]

My Freenas hardware has not changed in 18 months since I built it. Its basically worked flawlessly.

My problem is now:
The bootup is fine, the system runs a filesystem check. that passes on all drives.
Then FreeNas says
mounting local file systems:
net.inet.tcp.sendbuf_max: 2097152 -> 2097152
kern.ipc.maxsockbuf: 2097152 -> 2097152
net.inet.tcp.recvbuf_max: 2097152 -> 2097152
net.inet.tcp.delayed_ack: 0 -> 0

Then the machine stops - no error messages - nothing.
I cannot access the machine via Ethernet anymore.

What does this mean? - the motherboard is Intel the GigE ports are built into the motherboard. The BIOS tells me the Ethernet port link status is 'connected'.
Running FreeNAS V9.2.1.5
Is there something I can do to fix this or work around it?
I doubt if there is a hardware issue - more likely some sort of corruption.

I don;t suppose I can use a new installation of FreeNAS without loosing the contents of my ZFS pool.
I do boot from a USB drive and use an MSATA for logs. (again built into the motherboard) The 4 NAS drives are SATA - ports built into the motherboard.

I would even be willing to pay for some help on this one.

many thanks

 

[danb35]

You can reinstall FreeNAS without losing the contents of your ZFS pool. If you've saved a backup of your current config database, you won't even lose any of your system settings.

What motherboard are you using? Other hardware setup (RAM amount? ECC? etc.)? Have you changed anything on the system recently?

 

[norskman]

My system has been so reliable - except for a HDD failure - That I did not take a backup.
I did have a ZFS degraded message - I did replace the HDD - it was not the boot ( I boot from USB) so was just about to resilver.
I have not changed any settings or anything. I rebooted many times or hard power failures and everything survived.


DO you think i can create a new USB boot disk and then reinstall without loosing my ZFS data. I am trying hard to avoid that.
Following this failure I am going to rethink my backup strategy. I dont want to backup my NAS and the ZFS is good in maintaining things for a HDD failure.

Is there any good docs on what to backup?

many thanks for your input. I am sitting here looking at a dead NAS!

 

[danb35]

Yes, you should be able to do a clean FreeNAS installation and access your ZFS pool without an issue. If you have a spare USB stick, give that a try. You should even be able to resilver your zpool (what is the storage configuration?). If you didn't save a copy of your config database anywhere (check out the how-to guides for how to script automatic backups and integrity checks of the database), you'll lose your system settings--shares, plug-ins, jails, etc. Your data, however, will still be there.

Minimal backup should include the config database, whenever you make a configuration change. It's small (only around 200 KB), and the Web GUI has an easy way to do it (on the Settings tab, General sub-tab, click Save Config).

 

[norskman]

many thanks. As long as the data is there - then the rest can follow. I use Plex and also Owncloud. So a bit of a rebuild but not too bad. I will let the forum know how it goes.