Commit 15d03055 authored Aug 16, 2016 by Trond Myklebust

pNFS/flexfiles: Set reasonable default retrans values for the data channel

Prior to this patch, the retrans value was set at 5, meaning that we
could see a maximum retransmission timeout value of more than 6 minutes.
That's a tad high for NFSv3 where the protocol does allow the server to
drop requests at any time.

Since this is a data channel, let's just set retrans to 0, and the default
timeout to 60s. The user can continue to adjust these defaults using the
dataserver_retrans and dataserver_timeo module parameters.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

parent a956beda

fs/nfs/flexfilelayout/flexfilelayoutdev.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -17,8 +17,8 @@

		#define NFSDBG_FACILITY NFSDBG_PNFS_LD

		static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO;
		static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS;
		static unsigned int dataserver_timeo = NFS_DEF_TCP_RETRANS;
		static unsigned int dataserver_retrans;

		void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds)
		{