unimore/kernel-hacking-2024-linux-steffo
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NFS/pNFS: Set the connect timeout for the pNFS flexfiles driver

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Ensure that the connect timeout for the pNFS flexfiles driver is of the
same order as the I/O timeout, so that we can fail over quickly when
trying to read from a data server that is down.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2023-08-19 17:32:25 -04:00 committed by Anna Schumaker
parent cd18f24085
commit 537935f72e
4 changed files with 10 additions and 0 deletions
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2
fs/nfs/client.c
View file

@ -517,6 +517,8 @@ int nfs_create_rpc_client(struct nfs_client *clp,
.authflavor = flavor,
.cred = cl_init->cred,
.xprtsec = cl_init->xprtsec,
.connect_timeout = cl_init->connect_timeout,
.reconnect_timeout = cl_init->reconnect_timeout,
};
if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))

2
fs/nfs/internal.h
View file

@ -82,6 +82,8 @@ struct nfs_client_initdata {
const struct rpc_timeout *timeparms;
const struct cred *cred;
struct xprtsec_parms xprtsec;
unsigned long connect_timeout;
unsigned long reconnect_timeout;
};
/*

3
fs/nfs/nfs3client.c
View file

@ -86,6 +86,7 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
{
struct rpc_timeout ds_timeout;
unsigned long connect_timeout = ds_timeo * (ds_retrans + 1) * HZ / 10;
struct nfs_client *mds_clp = mds_srv->nfs_client;
struct nfs_client_initdata cl_init = {
.addr = ds_addr,
@ -98,6 +99,8 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
.timeparms = &ds_timeout,
.cred = mds_srv->cred,
.xprtsec = mds_clp->cl_xprtsec,
.connect_timeout = connect_timeout,
.reconnect_timeout = connect_timeout,
};
struct nfs_client *clp;
char buf[INET6_ADDRSTRLEN + 1];

3
fs/nfs/pnfs_nfs.c
View file

@ -852,6 +852,7 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
{
struct nfs_client *clp = ERR_PTR(-EIO);
struct nfs4_pnfs_ds_addr *da;
unsigned long connect_timeout = timeo * (retrans + 1) * HZ / 10;
int status = 0;
dprintk("--> %s DS %s\n", __func__, ds->ds_remotestr);
@ -870,6 +871,8 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
.dstaddr = (struct sockaddr *)&da->da_addr,
.addrlen = da->da_addrlen,
.servername = clp->cl_hostname,
.connect_timeout = connect_timeout,
.reconnect_timeout = connect_timeout,
};
if (da->da_transport != clp->cl_proto)