xfs: report AG health via AG geometry ioctl

Use the AG geometry info ioctl to report health status too.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

fs/xfs/libxfs/xfs_ag.c

@@ -20,6 +20,7 @@
 #include "xfs_rmap.h"
 #include "xfs_ag.h"
 #include "xfs_ag_resv.h"
+#include "xfs_health.h"
 
 static struct xfs_buf *
 xfs_get_aghdr_buf(
@@ -505,6 +506,7 @@ xfs_ag_get_geometry(
 		   pag->pagf_btreeblks -
 		   xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE);
 	ageo->ag_freeblks = freeblks;
+	xfs_ag_geom_health(pag, ageo);
 
 	/* Release resources. */
 	xfs_perag_put(pag);

fs/xfs/libxfs/xfs_fs.h

@@ -285,9 +285,21 @@ struct xfs_ag_geometry {
 	uint32_t	ag_freeblks;	/* o: free space */
 	uint32_t	ag_icount;	/* o: inodes allocated */
 	uint32_t	ag_ifree;	/* o: inodes free */
+	uint32_t	ag_sick;	/* o: sick things in ag */
+	uint32_t	ag_checked;	/* o: checked metadata in ag */
 	uint32_t	ag_reserved32;	/* o: zero */
-	uint64_t	ag_reserved[13];/* o: zero */
+	uint64_t	ag_reserved[12];/* o: zero */
 };
+#define XFS_AG_GEOM_SICK_SB	(1 << 0)  /* superblock */
+#define XFS_AG_GEOM_SICK_AGF	(1 << 1)  /* AGF header */
+#define XFS_AG_GEOM_SICK_AGFL	(1 << 2)  /* AGFL header */
+#define XFS_AG_GEOM_SICK_AGI	(1 << 3)  /* AGI header */
+#define XFS_AG_GEOM_SICK_BNOBT	(1 << 4)  /* free space by block */
+#define XFS_AG_GEOM_SICK_CNTBT	(1 << 5)  /* free space by length */
+#define XFS_AG_GEOM_SICK_INOBT	(1 << 6)  /* inode index */
+#define XFS_AG_GEOM_SICK_FINOBT	(1 << 7)  /* free inode index */
+#define XFS_AG_GEOM_SICK_RMAPBT	(1 << 8)  /* reverse mappings */
+#define XFS_AG_GEOM_SICK_REFCNTBT (1 << 9)  /* reference counts */
 
 /*
  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT

fs/xfs/libxfs/xfs_health.h

@@ -184,5 +184,6 @@ xfs_inode_is_healthy(struct xfs_inode *ip)
 }
 
 void xfs_fsop_geom_health(struct xfs_mount *mp, struct xfs_fsop_geom *geo);
+void xfs_ag_geom_health(struct xfs_perag *pag, struct xfs_ag_geometry *ageo);
 
 #endif	/* __XFS_HEALTH_H__ */

fs/xfs/xfs_health.c

@@ -320,3 +320,39 @@ xfs_fsop_geom_health(
 	for (m = rt_map; m->sick_mask; m++)
 		xfgeo_health_tick(geo, sick, checked, m);
 }
+
+static const struct ioctl_sick_map ag_map[] = {
+	{ XFS_SICK_AG_SB,	XFS_AG_GEOM_SICK_SB },
+	{ XFS_SICK_AG_AGF,	XFS_AG_GEOM_SICK_AGF },
+	{ XFS_SICK_AG_AGFL,	XFS_AG_GEOM_SICK_AGFL },
+	{ XFS_SICK_AG_AGI,	XFS_AG_GEOM_SICK_AGI },
+	{ XFS_SICK_AG_BNOBT,	XFS_AG_GEOM_SICK_BNOBT },
+	{ XFS_SICK_AG_CNTBT,	XFS_AG_GEOM_SICK_CNTBT },
+	{ XFS_SICK_AG_INOBT,	XFS_AG_GEOM_SICK_INOBT },
+	{ XFS_SICK_AG_FINOBT,	XFS_AG_GEOM_SICK_FINOBT },
+	{ XFS_SICK_AG_RMAPBT,	XFS_AG_GEOM_SICK_RMAPBT },
+	{ XFS_SICK_AG_REFCNTBT,	XFS_AG_GEOM_SICK_REFCNTBT },
+	{ 0, 0 },
+};
+
+/* Fill out ag geometry health info. */
+void
+xfs_ag_geom_health(
+	struct xfs_perag		*pag,
+	struct xfs_ag_geometry		*ageo)
+{
+	const struct ioctl_sick_map	*m;
+	unsigned int			sick;
+	unsigned int			checked;
+
+	ageo->ag_sick = 0;
+	ageo->ag_checked = 0;
+
+	xfs_ag_measure_sickness(pag, &sick, &checked);
+	for (m = ag_map; m->sick_mask; m++) {
+		if (checked & m->sick_mask)
+			ageo->ag_checked |= m->ioctl_mask;
+		if (sick & m->sick_mask)
+			ageo->ag_sick |= m->ioctl_mask;
+	}
+}