freebsd-nq

History

Rick Macklem ad6dc36520 nfscl: Use vfs.nfs.maxalloclen to limit Deallocate RPC RTT

Unlike Copy, the NFSv4.2 Allocate and Deallocate operations do not
allow a reply with partial completion.  As such, the only way to
limit the time the operation takes to provide a reasonable RPC RTT
is to limit the size of the allocation/deallocation in the NFSv4.2
client.

This patch uses the sysctl vfs.nfs.maxalloclen to set
the limit on the size of the Deallocate operation.
There is no way to know how long a server will take to do an
deallocate operation, but 64Mbytes results in a reasonable
RPC RTT for the slow hardware I test on.

For an 8Gbyte deallocation, the elapsed time for doing it in 64Mbyte
chunks was the same (within margin of variability) as the
elapsed time taken for a single large deallocation
operation for a FreeBSD server with a UFS file system.

2021-09-18 14:38:43 -07:00

autofs

Ensure that dirent's d_off field is initialized

2021-01-03 11:50:31 -05:00

cd9660

buffer pager: allow get_blksize method to return error

2021-09-17 20:29:55 +03:00

cuse

Fix for loading cuse.ko via rc.d . Make sure we declare the cuse(3)

2020-10-23 08:44:53 +00:00

deadfs

vn_open(): If the vnode is reclaimed during open(2), do not return error.