From: Nathan Scott <nathans@sgi.com>
Date: Thu, 18 May 2006 03:48:51 +0000 (+0000)
Subject: Add code to xfs_db/admin to allow version 1 to version 2 log transition.
X-Git-Tag: v2.8.0~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6699747336d0765d2e7c11fa2916af43fe404117;p=thirdparty%2Fxfsprogs-dev.git

Add code to xfs_db/admin to allow version 1 to version 2 log transition.
Merge of master-melb:xfs-cmds:25961a by kenmcd.
---

diff --git a/db/sb.c b/db/sb.c
index 746a72f4d..9f329584d 100644
--- a/db/sb.c
+++ b/db/sb.c
@@ -536,11 +536,12 @@ version_help(void)
 " 'version extflg'   - enable unwritten extents\n"
 " 'version attr1'    - enable v1 inline extended attributes\n"
 " 'version attr2'    - enable v2 inline extended attributes\n"
+" 'version log2'     - enable v2 log format\n"
 "\n"
 "The version function prints currently enabled features for a filesystem\n"
 "according to its the version field of the primary superblock.\n"
 "It can also be used to enable selected features, such as support for\n"
-"unwritten extents.  The upated version is written into to all AGs.\n"
+"unwritten extents.  The upated version is written into all AGs.\n"
 "\n"
 );
 }
@@ -549,14 +550,21 @@ static int
 do_version(xfs_agnumber_t agno, __uint16_t version, __uint32_t features)
 {
 	xfs_sb_t	tsb;
+	__int64_t	fields = 0;
 
 	if (!get_sb(agno, &tsb))
 		return 0;
 
+	if ((version & XFS_SB_VERSION_LOGV2BIT) &&
+	    !XFS_SB_VERSION_HASLOGV2(&tsb)) {
+		tsb.sb_logsunit = 1;
+		fields |= (1LL << XFS_SBS_LOGSUNIT);
+	}
+
 	tsb.sb_versionnum = version;
 	tsb.sb_features2 = features;
-	libxfs_xlate_sb(iocur_top->data, &tsb, -1,
-			(XFS_SB_VERSIONNUM | XFS_SBS_FEATURES2));
+	fields |= XFS_SB_VERSIONNUM | XFS_SB_FEATURES2;
+	libxfs_xlate_sb(iocur_top->data, &tsb, -1, fields);
 	write_cur();
 	return 1;
 }
@@ -641,6 +649,26 @@ version_f(
 						  XFS_SB_VERSION_EXTFLGBIT;
 				break;
 			}
+		} else if (!strcasecmp(argv[1], "log2")) {
+			switch (XFS_SB_VERSION_NUM(&mp->m_sb)) {
+			case XFS_SB_VERSION_1:
+				version = 0x0004 | XFS_SB_VERSION_LOGV2BIT;
+				break;
+			case XFS_SB_VERSION_2:
+				version = 0x0014 | XFS_SB_VERSION_LOGV2BIT;
+				break;
+			case XFS_SB_VERSION_3:
+				version = 0x0034 | XFS_SB_VERSION_LOGV2BIT;
+				break;
+			case XFS_SB_VERSION_4:
+				if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb))
+					dbprintf("version 2 log format"
+						 " is already in use\n");
+				else
+					version = mp->m_sb.sb_versionnum |
+						  XFS_SB_VERSION_LOGV2BIT;
+				break;
+			}
 		} else if (!strcasecmp(argv[1], "attr1")) {
 			if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
 				if (!(mp->m_sb.sb_features2 &=
diff --git a/db/xfs_admin.sh b/db/xfs_admin.sh
index 1702a3158..ac86d128d 100755
--- a/db/xfs_admin.sh
+++ b/db/xfs_admin.sh
@@ -4,13 +4,14 @@
 #
 
 OPTS=""
-USAGE="Usage: xfs_admin [-efluV] [-L label] [-U uuid] special"
+USAGE="Usage: xfs_admin [-efjluV] [-L label] [-U uuid] special"
 
-while getopts "efluL:U:V" c
+while getopts "efjluL:U:V" c
 do
 	case $c in
 	e)	OPTS=$OPTS" -c 'version extflg'";;
 	f)	OPTS=$OPTS" -f";;
+	j)	OPTS=$OPTS" -c 'version log2'";;
 	l)	OPTS=$OPTS" -r -c label";;
 	L)	OPTS=$OPTS" -c 'label "$OPTARG"'";;
 	u)	OPTS=$OPTS" -r -c uuid";;
diff --git a/doc/CHANGES b/doc/CHANGES
index 9594e6f23..0d03a6611 100644
--- a/doc/CHANGES
+++ b/doc/CHANGES
@@ -1,3 +1,7 @@
+[cvs]
+	- Added code to xfs_db and xfs_admin to allow conversion
+	  from version 1 to version 2 logs.
+
 xfsprogs-2.7.18 (16 May 2006)
 	- Fixed a case where xfs_repair was reporting a valid used 
 	  block as a duplicate during phase 4.
diff --git a/man/man8/xfs_admin.8 b/man/man8/xfs_admin.8
index 7034b5e5c..3cb42f598 100644
--- a/man/man8/xfs_admin.8
+++ b/man/man8/xfs_admin.8
@@ -32,6 +32,10 @@ already have this enabled.
 Specifies that the filesystem image to be processed is stored in a
 regular file (see the \f2mkfs.xfs\f1 \f3\-d\f1 \f2file\f1 option).
 .TP 5
+\f3\-j\f1
+Enables version 2 log format (journal format supporting larger
+log buffers).
+.TP 5
 \f3\-l\f1
 Print the current filesystem label.
 .TP 5
diff --git a/man/man8/xfs_db.8 b/man/man8/xfs_db.8
index dd7530e8f..2b28a1b55 100644
--- a/man/man8/xfs_db.8
+++ b/man/man8/xfs_db.8
@@ -436,13 +436,15 @@ superblock in the filesystem.
 to all secondary copies of the superblock.
 If no argument is given, the current filesystem UUID is printed.
 .TP
-\f3version\f1 [ \f2extflg\f1 | [\f2versionnum\f1 \f2features2\f1 ] ]
+\f3version\f1 [ \f2feature\f1 | [\f2versionnum\f1 \f2features2\f1 ] ]
 Enable selected features for a filesystem (certain features can
 be enabled on an unmounted filesystem, after
 .IR mkfs.xfs (8)
 has created the filesystem).
 Support for unwritten extents can be enabled using the \f2extflg\f1
 option.
+Support for version 2 log format can be enabled using the \f2log2\f1
+option.
 Support for extended attributes can be enabled using the \f2attr1\f1
 or \f2attr2\f1 option.
 Once enabled, extended attributes cannot be disabled, but the user