Increase the size of devd's client socket's send buffer from the
default (8k) to 128k. This prevents clients from getting
POLLHUPped during event storms. For example, during zpool creation,
the kernel emits a resource.fs.zfs.statechange event for every vdev
in the pool. A 128k buffer is large enough to hold the statechange
events for a pool with nearly 800 drives.
Reviewed by: ian, imp
Approved by: ken (mentor)
Sponsored by: Spectra Logic Corp
MFC after: 4 weeks
e12149b5f4