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authorChuck Lever <cel@netapp.com>2006-03-20 13:44:15 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:15 -0500
commit67ec9f46b889bfb1ab0a4e307d53929d5f0692bf (patch)
treefe9cb38a7ead5bf4894b22bdc10af5d513695781
parent006ea73e5fa82915d0ac7a3f15ee7c688433236d (diff)
NFS: report how long an NFS file system has been mounted
Add a field in nfs_server to record a timestamp when a mount succeeds. Report the number of seconds the file system has been mounted via nfs_show_stats(). Test plan: Mount an NFS file system, watch the mountstats reports and compare with clock time. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/nfs/inode.c5
-rw-r--r--include/linux/nfs_fs_sb.h1
2 files changed, 6 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 8ee74111e51..1b2d782374b 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -299,6 +299,9 @@ nfs_sb_init(struct super_block *sb, rpc_authflavor_t authflavor)
goto out_no_root;
}
+ /* mount time stamp, in seconds */
+ server->mount_time = jiffies;
+
/* Get some general file system info */
if (server->namelen == 0 &&
server->rpc_ops->pathconf(server, &server->fh, &pathinfo) >= 0)
@@ -674,6 +677,8 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
seq_puts(m, mnt->mnt_sb->s_flags & MS_NODIRATIME ? ",nodiratime" : "");
nfs_show_mount_options(m, nfss, 1);
+ seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ);
+
seq_printf(m, "\n\tcaps:\t");
seq_printf(m, "caps=0x%x", nfss->caps);
seq_printf(m, ",wtmult=%d", nfss->wtmult);
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index d65e69a06b7..65dec21af77 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -35,6 +35,7 @@ struct nfs_server {
char * hostname; /* remote hostname */
struct nfs_fh fh;
struct sockaddr_in addr;
+ unsigned long mount_time; /* when this fs was mounted */
#ifdef CONFIG_NFS_V4
/* Our own IP address, as a null-terminated string.
* This is used to generate the clientid, and the callback address.