add mount opt, always_auth, to force to send req to auth mds
diff mbox series

Message ID 1568082511-805-1-git-send-email-simon29rock@gmail.com
State New
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Series
  • add mount opt, always_auth, to force to send req to auth mds
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Commit Message

simon gao Sept. 10, 2019, 2:28 a.m. UTC
In larger clusters (hundreds of millions of files). We have to pin the
directory on a fixed mds now. Some op of client use USE_ANY_MDS mode
to access mds, which may result in requests being sent to noauth mds
and then forwarded to authmds.
the opt is used to reduce forward op.
---
 fs/ceph/mds_client.c | 7 ++++++-
 fs/ceph/super.c      | 7 +++++++
 fs/ceph/super.h      | 1 +
 3 files changed, 14 insertions(+), 1 deletion(-)

Comments

Yan, Zheng Sept. 11, 2019, 2:58 a.m. UTC | #1
On Wed, Sep 11, 2019 at 2:46 AM simon gao <simon29rock@gmail.com> wrote:
>
> In larger clusters (hundreds of millions of files). We have to pin the
> directory on a fixed mds now. Some op of client use USE_ANY_MDS mode
> to access mds, which may result in requests being sent to noauth mds
> and then forwarded to authmds.
> the opt is used to reduce forward op.
> ---
>  fs/ceph/mds_client.c | 7 ++++++-
>  fs/ceph/super.c      | 7 +++++++
>  fs/ceph/super.h      | 1 +
>  3 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
> index 920e9f0..aca4490 100644
> --- a/fs/ceph/mds_client.c
> +++ b/fs/ceph/mds_client.c
> @@ -878,6 +878,7 @@ static struct inode *get_nonsnap_parent(struct dentry *dentry)
>  static int __choose_mds(struct ceph_mds_client *mdsc,
>                         struct ceph_mds_request *req)
>  {
> +       struct ceph_mount_options *ma = mdsc->fsc->mount_options;
>         struct inode *inode;
>         struct ceph_inode_info *ci;
>         struct ceph_cap *cap;
> @@ -900,7 +901,11 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
>
>         if (mode == USE_RANDOM_MDS)
>                 goto random;
> -
> +       // force to send the req to auth mds
> +       if (ma->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH && mode != USE_AUTH_MDS){

use ceph_test_mount_opt(). Otherwise, looks good to me

> +               dout("change mode %d => USE_AUTH_MDS", mode);
> +               mode = USE_AUTH_MDS;
> +       }
>         inode = NULL;
>         if (req->r_inode) {
>                 if (ceph_snap(req->r_inode) != CEPH_SNAPDIR) {
> diff --git a/fs/ceph/super.c b/fs/ceph/super.c
> index ab4868c..1e81ebc 100644
> --- a/fs/ceph/super.c
> +++ b/fs/ceph/super.c
> @@ -169,6 +169,7 @@ enum {
>         Opt_noquotadf,
>         Opt_copyfrom,
>         Opt_nocopyfrom,
> +       Opt_always_auth,
>  };
>
>  static match_table_t fsopt_tokens = {
> @@ -210,6 +211,7 @@ enum {
>         {Opt_noquotadf, "noquotadf"},
>         {Opt_copyfrom, "copyfrom"},
>         {Opt_nocopyfrom, "nocopyfrom"},
> +       {Opt_always_auth, "always_auth"},
>         {-1, NULL}
>  };
>
> @@ -381,6 +383,9 @@ static int parse_fsopt_token(char *c, void *private)
>         case Opt_noacl:
>                 fsopt->sb_flags &= ~SB_POSIXACL;
>                 break;
> +       case Opt_always_auth:
> +               fsopt->flags |= CEPH_MOUNT_OPT_ALWAYS_AUTH;
> +               break;
>         default:
>                 BUG_ON(token);
>         }
> @@ -563,6 +568,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
>                 seq_puts(m, ",nopoolperm");
>         if (fsopt->flags & CEPH_MOUNT_OPT_NOQUOTADF)
>                 seq_puts(m, ",noquotadf");
> +       if (fsopt->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH)
> +               seq_puts(m, ",always_auth");
>
>  #ifdef CONFIG_CEPH_FS_POSIX_ACL
>         if (fsopt->sb_flags & SB_POSIXACL)
> diff --git a/fs/ceph/super.h b/fs/ceph/super.h
> index 6b9f1ee..65f6423 100644
> --- a/fs/ceph/super.h
> +++ b/fs/ceph/super.h
> @@ -41,6 +41,7 @@
>  #define CEPH_MOUNT_OPT_MOUNTWAIT       (1<<12) /* mount waits if no mds is up */
>  #define CEPH_MOUNT_OPT_NOQUOTADF       (1<<13) /* no root dir quota in statfs */
>  #define CEPH_MOUNT_OPT_NOCOPYFROM      (1<<14) /* don't use RADOS 'copy-from' op */
> +#define CEPH_MOUNT_OPT_ALWAYS_AUTH     (1<<15) /* send op to auth mds, not to replicative mds */
>
>  #define CEPH_MOUNT_OPT_DEFAULT                 \
>         (CEPH_MOUNT_OPT_DCACHE |                \
> --
> 1.8.3.1
>
simon gao Sept. 11, 2019, 12:58 p.m. UTC | #2
changed it.
thanks

Yan, Zheng <ukernel@gmail.com> 于2019年9月11日周三 上午10:58写道:
>
> On Wed, Sep 11, 2019 at 2:46 AM simon gao <simon29rock@gmail.com> wrote:
> >
> > In larger clusters (hundreds of millions of files). We have to pin the
> > directory on a fixed mds now. Some op of client use USE_ANY_MDS mode
> > to access mds, which may result in requests being sent to noauth mds
> > and then forwarded to authmds.
> > the opt is used to reduce forward op.
> > ---
> >  fs/ceph/mds_client.c | 7 ++++++-
> >  fs/ceph/super.c      | 7 +++++++
> >  fs/ceph/super.h      | 1 +
> >  3 files changed, 14 insertions(+), 1 deletion(-)
> >
> > diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
> > index 920e9f0..aca4490 100644
> > --- a/fs/ceph/mds_client.c
> > +++ b/fs/ceph/mds_client.c
> > @@ -878,6 +878,7 @@ static struct inode *get_nonsnap_parent(struct dentry *dentry)
> >  static int __choose_mds(struct ceph_mds_client *mdsc,
> >                         struct ceph_mds_request *req)
> >  {
> > +       struct ceph_mount_options *ma = mdsc->fsc->mount_options;
> >         struct inode *inode;
> >         struct ceph_inode_info *ci;
> >         struct ceph_cap *cap;
> > @@ -900,7 +901,11 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
> >
> >         if (mode == USE_RANDOM_MDS)
> >                 goto random;
> > -
> > +       // force to send the req to auth mds
> > +       if (ma->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH && mode != USE_AUTH_MDS){
>
> use ceph_test_mount_opt(). Otherwise, looks good to me
>
> > +               dout("change mode %d => USE_AUTH_MDS", mode);
> > +               mode = USE_AUTH_MDS;
> > +       }
> >         inode = NULL;
> >         if (req->r_inode) {
> >                 if (ceph_snap(req->r_inode) != CEPH_SNAPDIR) {
> > diff --git a/fs/ceph/super.c b/fs/ceph/super.c
> > index ab4868c..1e81ebc 100644
> > --- a/fs/ceph/super.c
> > +++ b/fs/ceph/super.c
> > @@ -169,6 +169,7 @@ enum {
> >         Opt_noquotadf,
> >         Opt_copyfrom,
> >         Opt_nocopyfrom,
> > +       Opt_always_auth,
> >  };
> >
> >  static match_table_t fsopt_tokens = {
> > @@ -210,6 +211,7 @@ enum {
> >         {Opt_noquotadf, "noquotadf"},
> >         {Opt_copyfrom, "copyfrom"},
> >         {Opt_nocopyfrom, "nocopyfrom"},
> > +       {Opt_always_auth, "always_auth"},
> >         {-1, NULL}
> >  };
> >
> > @@ -381,6 +383,9 @@ static int parse_fsopt_token(char *c, void *private)
> >         case Opt_noacl:
> >                 fsopt->sb_flags &= ~SB_POSIXACL;
> >                 break;
> > +       case Opt_always_auth:
> > +               fsopt->flags |= CEPH_MOUNT_OPT_ALWAYS_AUTH;
> > +               break;
> >         default:
> >                 BUG_ON(token);
> >         }
> > @@ -563,6 +568,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
> >                 seq_puts(m, ",nopoolperm");
> >         if (fsopt->flags & CEPH_MOUNT_OPT_NOQUOTADF)
> >                 seq_puts(m, ",noquotadf");
> > +       if (fsopt->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH)
> > +               seq_puts(m, ",always_auth");
> >
> >  #ifdef CONFIG_CEPH_FS_POSIX_ACL
> >         if (fsopt->sb_flags & SB_POSIXACL)
> > diff --git a/fs/ceph/super.h b/fs/ceph/super.h
> > index 6b9f1ee..65f6423 100644
> > --- a/fs/ceph/super.h
> > +++ b/fs/ceph/super.h
> > @@ -41,6 +41,7 @@
> >  #define CEPH_MOUNT_OPT_MOUNTWAIT       (1<<12) /* mount waits if no mds is up */
> >  #define CEPH_MOUNT_OPT_NOQUOTADF       (1<<13) /* no root dir quota in statfs */
> >  #define CEPH_MOUNT_OPT_NOCOPYFROM      (1<<14) /* don't use RADOS 'copy-from' op */
> > +#define CEPH_MOUNT_OPT_ALWAYS_AUTH     (1<<15) /* send op to auth mds, not to replicative mds */
> >
> >  #define CEPH_MOUNT_OPT_DEFAULT                 \
> >         (CEPH_MOUNT_OPT_DCACHE |                \
> > --
> > 1.8.3.1
> >

Patch
diff mbox series

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 920e9f0..aca4490 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -878,6 +878,7 @@  static struct inode *get_nonsnap_parent(struct dentry *dentry)
 static int __choose_mds(struct ceph_mds_client *mdsc,
 			struct ceph_mds_request *req)
 {
+	struct ceph_mount_options *ma = mdsc->fsc->mount_options;
 	struct inode *inode;
 	struct ceph_inode_info *ci;
 	struct ceph_cap *cap;
@@ -900,7 +901,11 @@  static int __choose_mds(struct ceph_mds_client *mdsc,
 
 	if (mode == USE_RANDOM_MDS)
 		goto random;
-
+	// force to send the req to auth mds
+	if (ma->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH && mode != USE_AUTH_MDS){
+		dout("change mode %d => USE_AUTH_MDS", mode);
+		mode = USE_AUTH_MDS;
+	}
 	inode = NULL;
 	if (req->r_inode) {
 		if (ceph_snap(req->r_inode) != CEPH_SNAPDIR) {
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index ab4868c..1e81ebc 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -169,6 +169,7 @@  enum {
 	Opt_noquotadf,
 	Opt_copyfrom,
 	Opt_nocopyfrom,
+	Opt_always_auth,
 };
 
 static match_table_t fsopt_tokens = {
@@ -210,6 +211,7 @@  enum {
 	{Opt_noquotadf, "noquotadf"},
 	{Opt_copyfrom, "copyfrom"},
 	{Opt_nocopyfrom, "nocopyfrom"},
+	{Opt_always_auth, "always_auth"},
 	{-1, NULL}
 };
 
@@ -381,6 +383,9 @@  static int parse_fsopt_token(char *c, void *private)
 	case Opt_noacl:
 		fsopt->sb_flags &= ~SB_POSIXACL;
 		break;
+	case Opt_always_auth:
+		fsopt->flags |= CEPH_MOUNT_OPT_ALWAYS_AUTH;
+		break;
 	default:
 		BUG_ON(token);
 	}
@@ -563,6 +568,8 @@  static int ceph_show_options(struct seq_file *m, struct dentry *root)
 		seq_puts(m, ",nopoolperm");
 	if (fsopt->flags & CEPH_MOUNT_OPT_NOQUOTADF)
 		seq_puts(m, ",noquotadf");
+	if (fsopt->flags & CEPH_MOUNT_OPT_ALWAYS_AUTH)
+		seq_puts(m, ",always_auth");
 
 #ifdef CONFIG_CEPH_FS_POSIX_ACL
 	if (fsopt->sb_flags & SB_POSIXACL)
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 6b9f1ee..65f6423 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -41,6 +41,7 @@ 
 #define CEPH_MOUNT_OPT_MOUNTWAIT       (1<<12) /* mount waits if no mds is up */
 #define CEPH_MOUNT_OPT_NOQUOTADF       (1<<13) /* no root dir quota in statfs */
 #define CEPH_MOUNT_OPT_NOCOPYFROM      (1<<14) /* don't use RADOS 'copy-from' op */
+#define CEPH_MOUNT_OPT_ALWAYS_AUTH     (1<<15) /* send op to auth mds, not to replicative mds */
 
 #define CEPH_MOUNT_OPT_DEFAULT			\
 	(CEPH_MOUNT_OPT_DCACHE |		\