[zfs-discuss] vmap allocation failed messages
selimbaygin at gmail.com
Fri Jul 1 13:24:29 EDT 2011
Running a 3GB Ubuntu 11.04 32-bit instance with vmalloc=512M in the
kernel options. However, I see the following messages in the 'dmesg'
vmap allocation for size 4198400 failed: use vmalloc=<size> to
vmap allocation for size 2101248 failed: use vmalloc=<size> to
I know that ZFS is memory hungry and this could be something to do
with the fact that I am transferring large (e.g., BD .m2ts files about
2GB in size).
1. Is there a configuration change I can make to prevent these
messages from coming up?
2. If I set vmalloc=2052M, would that help (seems like it's the value
in the 2nd dmesg line from above, converted to megabytes)?
3. Would my system choke an die considering that it also has a full
LAMP install + SSHd?
4. Are these non-fatal warning messages that can safely be ignored,
i.e., it slows down a copy process, but doesn't result in lost data?
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