I think you have a problem with pool fragmentation. We have the same problem
and changing
recordsize will help. You have to set smaller recordsize for pool ( all
filesystem must have the same size or smaller size ). First check if you have
problems with finding blocks with this dtrace script:
#!/usr/sbin/dtrace -s
fbt::space_map_alloc:entry
{
self->s = arg1;
}
fbt::space_map_alloc:return
/arg1 != -1/
{
self->s = 0;
}
fbt::space_map_alloc:return
/self->s && (arg1 == -1)/
{
@s = quantize(self->s);
self->s = 0;
}
tick-10s
{
printa(@s);
}
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