"System has insufficient buffers to rebalance the tree." after upgrade to 3.8.1
marco at righele.it
Fri Jun 27 01:03:45 PDT 2014
I have a small system that I recently upgraded from 3.6 to 3.8.1.
After the upgrade, the nightly jobs will spew
hammer: System has insufficient buffers to rebalance the tree. nbuf
on the log while trying to do hammer rebalance.
If I try hammer rebalance on any pfs from the command line I will get
Rebalance / failed: No space left on device
even though the system has about 10% of free space (13GB out of 140GB).
doesn't seem to be affected.
Rebalancing a HAMMER PFS uses quite a bit of memory and can't be done
low memory systems. It has been reported to fail on 512MB systems.
Rebalancing isn't critical for HAMMER file system operation; it is
by hammer rebalance, often as part of hammer cleanup.
The machine has 2GB of RAM, so unless the requirement changed it
shouldn't be a an issue of not having enough memory.
Is it something I should worry about ?
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