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Home » Kerio User Forums » Kerio Connect » Network storage over NFSv4 problems - Kerio 8.2.x (Errors with locking files on high load over NFSv4 ...)
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prognosis

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We have Linux version Kerio connect 8.2.x (64bit) and our mail storage is connected over NFSv4.
When there is a "high load" (many people logged-in over Kerio connector, and some over web), I get error in syslog - "NFS: nfs4_reclaim_open_state: Lock reclaim failed!".
This bug is known to be related in some kernels, but I got them independent of kernel version. When this error arrive, it's impossible for that user to login to mail account. Login is possible after NFS lock timeout.

My questions are: Are there any plans to officialy support network storage over NFS?
Would this problem disappear when I use NFSv3 and would it be safe? (NFSv3 don't support locking)
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Pavel Dobry (Kerio)

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Kerio Connect does not support network filesystems. Server require fast, reliable and low latency storage for message store.
Please use a local filesystem such as ext2, ext3 or ext4.
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prognosis

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Please try to tell this all clients which uses network storage with their DB and life-critical systems over multiple fiber connections Wink
We globaly use ext4. NFSv4 export is on ext4 too and has possibility to connect over 4 physical interfaces together. It's not cheap small dumb NAS Smile
I have reasons for not to use iSCSI and to use NFS.

My second question was: Are there any plans to officialy support network storage over NFS?
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Mark Price (Kerio)

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Hi Prognosis

I'm sorry, but we currently have no plans to support NFS at this time. But, You can use the suggest idea feature to add to the feature request list.

I hope this helps.

Mark Price
Kerio technical support.

Log Support Incidents here: http://www.kerio.com/support
Also, please use our KB: http://kb.kerio.com
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Tuxis

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The .nfs causing reindexing issue is fixed in 8.5 btw.

Tip for filelocking:
We use NFS V3 with setting local_lock=all and that works fine.
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