[7/8] xfs_db: convert rtbitmap geometry

Commit Message

Darrick J. Wong Oct. 31, 2024, 11:23 p.m. UTC

From: Darrick J. Wong <[e-mail]>

Teach the rtconvert command to be able to convert realtime blocks and
extents to locations within the rt bitmap.

Signed-off-by: Darrick J. Wong <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
---
 db/convert.c      |   40 ++++++++++++++++++++++++++++++++++++++++
 man/man8/xfs_db.8 |   10 ++++++++++
 2 files changed, 50 insertions(+)

Patch

diff --git a/db/convert.c b/db/convert.c
index 4c2ff1c5804c47..7c10690f574f7a 100644
--- a/db/convert.c
+++ b/db/convert.c
@@ -31,6 +31,10 @@ 
 	((uint64_t)(x) << mp->m_sb.sb_blocklog)
 #define rtx_to_rtblock(x)	\
 	((uint64_t)(x) * mp->m_sb.sb_rextsize)
+#define rbmblock_to_bytes(x)	\
+	rtblock_to_bytes(rtx_to_rtblock(xfs_rbmblock_to_rtx(mp, (uint64_t)x)))
+#define rbmword_to_bytes(x)	\
+	rtblock_to_bytes(rtx_to_rtblock((uint64_t)(x) << XFS_NBWORDLOG))
 
 typedef enum {
 	CT_NONE = -1,
@@ -47,6 +51,8 @@  typedef enum {
 	CT_INOOFF,		/* byte offset in inode */
 	CT_RTBLOCK,		/* realtime block */
 	CT_RTX,			/* realtime extent */
+	CT_RBMBLOCK,		/* block within rt bitmap */
+	CT_RBMWORD,		/* word within rt bitmap */
 	NCTS
 } ctype_t;
 
@@ -69,6 +75,8 @@  typedef union {
 	int		inooff;
 	xfs_rtblock_t	rtblock;
 	xfs_rtblock_t	rtx;
+	xfs_fileoff_t	rbmblock;
+	unsigned int	rbmword;
 } cval_t;
 
 static uint64_t		bytevalue(ctype_t ctype, cval_t *val);
@@ -95,6 +103,8 @@  static const char	*inooff_names[] = { "inooff", "inodeoff", NULL };
 
 static const char	*rtblock_names[] = { "rtblock", "rtb", "rtbno", NULL };
 static const char	*rtx_names[] = { "rtx", "rtextent", NULL };
+static const char	*rbmblock_names[] = { "rbmblock", "rbmb", NULL };
+static const char	*rbmword_names[] = { "rbmword", "rbmw", NULL };
 
 static const ctydesc_t	ctydescs[NCTS] = {
 	[CT_AGBLOCK] = {
@@ -196,6 +206,14 @@  static const ctydesc_t	ctydescs_rt[NCTS] = {
 			   M(BLKOFF),
 		.names   = rtx_names,
 	},
+	[CT_RBMBLOCK] = {
+		.allowed = M(RBMWORD),
+		.names   = rbmblock_names,
+	},
+	[CT_RBMWORD] = {
+		.allowed = M(RBMBLOCK),
+		.names   = rbmword_names,
+	},
 };
 
 static const cmdinfo_t	convert_cmd =
@@ -236,6 +254,10 @@  bytevalue(ctype_t ctype, cval_t *val)
 		return rtblock_to_bytes(val->rtblock);
 	case CT_RTX:
 		return rtblock_to_bytes(rtx_to_rtblock(val->rtx));
+	case CT_RBMBLOCK:
+		return rbmblock_to_bytes(val->rbmblock);
+	case CT_RBMWORD:
+		return rbmword_to_bytes(val->rbmword);
 	case CT_NONE:
 	case NCTS:
 		break;
@@ -337,6 +359,8 @@  convert_f(int argc, char **argv)
 		break;
 	case CT_RTBLOCK:
 	case CT_RTX:
+	case CT_RBMBLOCK:
+	case CT_RBMWORD:
 		/* shouldn't get here */
 		ASSERT(0);
 		break;
@@ -418,6 +442,16 @@  rtconvert_f(int argc, char **argv)
 	case CT_RTX:
 		v = xfs_daddr_to_rtb(mp, v >> BBSHIFT) / mp->m_sb.sb_rextsize;
 		break;
+	case CT_RBMBLOCK:
+		v = xfs_rtx_to_rbmblock(mp,
+				xfs_rtb_to_rtx(mp,
+					xfs_daddr_to_rtb(mp, v >> BBSHIFT)));
+		break;
+	case CT_RBMWORD:
+		v = xfs_rtx_to_rbmword(mp,
+				xfs_rtb_to_rtx(mp,
+					xfs_daddr_to_rtb(mp, v >> BBSHIFT)));
+		break;
 	case CT_AGBLOCK:
 	case CT_AGINO:
 	case CT_AGNUMBER:
@@ -495,6 +529,12 @@  getvalue(char *s, ctype_t ctype, cval_t *val)
 	case CT_RTX:
 		val->rtx = (xfs_rtblock_t)v;
 		break;
+	case CT_RBMBLOCK:
+		val->rbmblock = (xfs_fileoff_t)v;
+		break;
+	case CT_RBMWORD:
+		val->rbmword = (unsigned int)v;
+		break;
 	case CT_NONE:
 	case NCTS:
 		/* NOTREACHED */
diff --git a/man/man8/xfs_db.8 b/man/man8/xfs_db.8
index 0bf434299a3fb4..12fc4f3b51016b 100644
--- a/man/man8/xfs_db.8
+++ b/man/man8/xfs_db.8
@@ -1173,6 +1173,16 @@  .SH COMMANDS
 or
 .B rtextent
 (realtime extent)
+.HP
+.B rbmblock
+or
+.B rbmb
+(realtime bitmap block)
+.HP
+.B rbmword
+or
+.B rbmw
+(32-bit word within a realtime bitmap block)
 .PD
 .RE
 .IP