xfs: report fs and rt health via geometry structure

Use our newly expanded geometry structure to report the overall fs and
realtime health status.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

4 files changed, 73 insertions, 2 deletions

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index ee33d628a240..6b8956dbf49d 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -199,9 +199,18 @@ struct xfs_fsop_geom {
         __u32           rtsectsize;     /* realtime sector size, bytes  */
         __u32           dirblocksize;   /* directory block size, bytes  */
         __u32           logsunit;       /* log stripe unit, bytes       */
-        __u64           reserved[18];   /* reserved space               */
+        uint32_t        sick;           /* o: unhealthy fs & rt metadata */
+        uint32_t        checked;        /* o: checked fs & rt metadata  */
+        __u64           reserved[17];   /* reserved space               */
 };
 
+#define XFS_FSOP_GEOM_SICK_COUNTERS     (1 << 0)  /* summary counters */
+#define XFS_FSOP_GEOM_SICK_UQUOTA       (1 << 1)  /* user quota */
+#define XFS_FSOP_GEOM_SICK_GQUOTA       (1 << 2)  /* group quota */
+#define XFS_FSOP_GEOM_SICK_PQUOTA       (1 << 3)  /* project quota */
+#define XFS_FSOP_GEOM_SICK_RT_BITMAP    (1 << 4)  /* realtime bitmap */
+#define XFS_FSOP_GEOM_SICK_RT_SUMMARY   (1 << 5)  /* realtime summary */
+
 /* Output for XFS_FS_COUNTS */
 typedef struct xfs_fsop_counts {
         __u64   freedata;       /* free data section blocks */
diff --git a/fs/xfs/libxfs/xfs_health.h b/fs/xfs/libxfs/xfs_health.h
index 0915d20975be..3fffdcc80970 100644
--- a/fs/xfs/libxfs/xfs_health.h
+++ b/fs/xfs/libxfs/xfs_health.h
@@ -34,6 +34,7 @@
 struct xfs_mount;
 struct xfs_perag;
 struct xfs_inode;
+struct xfs_fsop_geom;
 
 /* Observable health issues for metadata spanning the entire filesystem. */
 #define XFS_SICK_FS_COUNTERS    (1 << 0)  /* summary counters */
@@ -182,4 +183,6 @@ xfs_inode_is_healthy(struct xfs_inode *ip)
         return !xfs_inode_has_sickness(ip, -1U);
 }
 
+void xfs_fsop_geom_health(struct xfs_mount *mp, struct xfs_fsop_geom *geo);
+
 #endif  /* __XFS_HEALTH_H__ */
diff --git a/fs/xfs/xfs_health.c b/fs/xfs/xfs_health.c
index 21728228e08b..d137b8f13869 100644
--- a/fs/xfs/xfs_health.c
+++ b/fs/xfs/xfs_health.c
@@ -264,3 +264,59 @@ xfs_inode_measure_sickness(
         *checked = ip->i_checked;
         spin_unlock(&ip->i_flags_lock);
 }
+
+/* Mappings between internal sick masks and ioctl sick masks. */
+
+struct ioctl_sick_map {
+        unsigned int            sick_mask;
+        unsigned int            ioctl_mask;
+};
+
+static const struct ioctl_sick_map fs_map[] = {
+        { XFS_SICK_FS_COUNTERS, XFS_FSOP_GEOM_SICK_COUNTERS},
+        { XFS_SICK_FS_UQUOTA,   XFS_FSOP_GEOM_SICK_UQUOTA },
+        { XFS_SICK_FS_GQUOTA,   XFS_FSOP_GEOM_SICK_GQUOTA },
+        { XFS_SICK_FS_PQUOTA,   XFS_FSOP_GEOM_SICK_PQUOTA },
+        { 0, 0 },
+};
+
+static const struct ioctl_sick_map rt_map[] = {
+        { XFS_SICK_RT_BITMAP,   XFS_FSOP_GEOM_SICK_RT_BITMAP },
+        { XFS_SICK_RT_SUMMARY,  XFS_FSOP_GEOM_SICK_RT_SUMMARY },
+        { 0, 0 },
+};
+
+static inline void
+xfgeo_health_tick(
+        struct xfs_fsop_geom            *geo,
+        unsigned int                    sick,
+        unsigned int                    checked,
+        const struct ioctl_sick_map     *m)
+{
+        if (checked & m->sick_mask)
+                geo->checked |= m->ioctl_mask;
+        if (sick & m->sick_mask)
+                geo->sick |= m->ioctl_mask;
+}
+
+/* Fill out fs geometry health info. */
+void
+xfs_fsop_geom_health(
+        struct xfs_mount                *mp,
+        struct xfs_fsop_geom            *geo)
+{
+        const struct ioctl_sick_map     *m;
+        unsigned int                    sick;
+        unsigned int                    checked;
+
+        geo->sick = 0;
+        geo->checked = 0;
+
+        xfs_fs_measure_sickness(mp, &sick, &checked);
+        for (m = fs_map; m->sick_mask; m++)
+                xfgeo_health_tick(geo, sick, checked, m);
+
+        xfs_rt_measure_sickness(mp, &sick, &checked);
+        for (m = rt_map; m->sick_mask; m++)
+                xfgeo_health_tick(geo, sick, checked, m);
+}
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index b36abd453709..ae615a79b266 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -34,6 +34,7 @@
 #include "scrub/xfs_scrub.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
+#include "xfs_health.h"
 
 #include <linux/capability.h>
 #include <linux/cred.h>
@@ -797,8 +798,10 @@ xfs_ioc_fsgeometry(
                 len = sizeof(struct xfs_fsop_geom_v1);
         else if (struct_version == 4)
                 len = sizeof(struct xfs_fsop_geom_v4);
-        else
+        else {
+                xfs_fsop_geom_health(mp, &fsgeo);
                 len = sizeof(fsgeo);
+        }
 
         if (copy_to_user(arg, &fsgeo, len))
                 return -EFAULT;