Add the new logformat command to format the log to a specified log cycle
and/or log stripe unit. This command is primarily for testing purposes
and is only available in expert mode.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
---
db/Makefile | 4 +-
db/command.c | 2 +
db/logformat.c | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
db/logformat.h | 19 ++++++++
4 files changed, 172 insertions(+), 2 deletions(-)
create mode 100644 db/logformat.c
create mode 100644 db/logformat.h
diff --git a/db/Makefile b/db/Makefile
index fb01bdd..8260da3 100644
--- a/db/Makefile
+++ b/db/Makefile
@@ -11,8 +11,8 @@ HFILES = addr.h agf.h agfl.h agi.h attr.h attrshort.h bit.h block.h bmap.h \
btblock.h bmroot.h check.h command.h convert.h debug.h \
dir2.h dir2sf.h dquot.h echo.h faddr.h field.h \
flist.h fprint.h frag.h freesp.h hash.h help.h init.h inode.h input.h \
- io.h malloc.h metadump.h output.h print.h quit.h sb.h sig.h strvec.h \
- text.h type.h write.h attrset.h symlink.h
+ io.h logformat.h malloc.h metadump.h output.h print.h quit.h sb.h \
+ sig.h strvec.h text.h type.h write.h attrset.h symlink.h
CFILES = $(HFILES:.h=.c)
LSRCFILES = xfs_admin.sh xfs_ncheck.sh xfs_metadump.sh
diff --git a/db/command.c b/db/command.c
index 2189e00..3c17a1e 100644
--- a/db/command.c
+++ b/db/command.c
@@ -40,6 +40,7 @@
#include "inode.h"
#include "input.h"
#include "io.h"
+#include "logformat.h"
#include "metadump.h"
#include "output.h"
#include "print.h"
@@ -131,6 +132,7 @@ init_commands(void)
hash_init();
inode_init();
input_init();
+ logformat_init();
io_init();
metadump_init();
output_init();
diff --git a/db/logformat.c b/db/logformat.c
new file mode 100644
index 0000000..254f33d
--- /dev/null
+++ b/db/logformat.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libxfs.h"
+#include "command.h"
+#include "init.h"
+#include "output.h"
+#include "libxlog.h"
+
+#define MAX_LSUNIT 256 * 1024 /* max log buf. size */
+
+static int
+logformat_f(int argc, char **argv)
+{
+ xfs_daddr_t head_blk;
+ xfs_daddr_t tail_blk;
+ int logversion;
+ int lsunit = -1;
+ int cycle = -1;
+ int error;
+ int c;
+
+ logversion = xfs_sb_version_haslogv2(&mp->m_sb) ? 2 : 1;
+
+ while ((c = getopt(argc, argv, "c:s:")) != EOF) {
+ switch (c) {
+ case 'c':
+ cycle = strtol(optarg, NULL, 0);
+ if (cycle == 0) {
+ dbprintf("invalid cycle\n");
+ return -1;
+ }
+ break;
+ case 's':
+ lsunit = strtol(optarg, NULL, 0);
+ /*
+ * The log stripe unit must be block aligned and no
+ * larger than 256k.
+ */
+ if (lsunit > 1 &&
+ (lsunit % mp->m_sb.sb_blocksize ||
+ (logversion == 2 && lsunit > MAX_LSUNIT))) {
+ dbprintf("invalid log stripe unit\n");
+ return -1;
+ }
+ break;
+ default:
+ dbprintf("invalid option\n");
+ return -1;
+ }
+ }
+
+ /*
+ * Check whether the log is dirty. This also determines the current log
+ * cycle if we have to use it by default below.
+ */
+ memset(mp->m_log, 0, sizeof(struct xlog));
+ mp->m_log->l_mp = mp;
+ mp->m_log->l_dev = mp->m_logdev_targp;
+ mp->m_log->l_logBBsize = XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks);
+ mp->m_log->l_logBBstart = XFS_FSB_TO_DADDR(mp, mp->m_sb.sb_logstart);
+ mp->m_log->l_sectBBsize = BBSIZE;
+ if (xfs_sb_version_hassector(&mp->m_sb))
+ mp->m_log->l_sectBBsize <<= (mp->m_sb.sb_logsectlog - BBSHIFT);
+ mp->m_log->l_sectBBsize = BTOBB(mp->m_log->l_sectBBsize);
+
+ error = xlog_find_tail(mp->m_log, &head_blk, &tail_blk);
+ if (error) {
+ dbprintf("could not find log head/tail\n");
+ return -1;
+ }
+ if (head_blk != tail_blk) {
+ dbprintf(_(
+ "The log is dirty. Please mount to replay the log.\n"));
+ return -1;
+ }
+
+ /*
+ * Use the current cycle and/or log stripe unit if either is not
+ * provided by the user.
+ */
+ if (cycle < 0)
+ cycle = mp->m_log->l_curr_cycle;
+ if (lsunit < 0)
+ lsunit = mp->m_sb.sb_logsunit;
+
+ dbprintf("Formatting the log to cycle %d, stripe unit %d bytes.\n",
+ cycle, lsunit);
+ error = libxfs_log_clear(mp->m_logdev_targp, NULL,
+ mp->m_log->l_logBBstart,
+ mp->m_log->l_logBBsize,
+ &mp->m_sb.sb_uuid, logversion, lsunit,
+ XLOG_FMT, cycle, false);
+ if (error) {
+ dbprintf("error formatting log - %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static void
+logformat_help(void)
+{
+ dbprintf(_(
+"\n"
+" The 'logformat' command reformats (clears) the log to the specified log\n"
+" cycle and log stripe unit. If the log cycle is not specified, the log is\n"
+" reformatted to the current cycle. If the log stripe unit is not specified,\n"
+" the stripe unit from the filesystem superblock is used.\n"
+"\n"
+ ));
+}
+
+static const struct cmdinfo logformat_cmd = {
+ .name = "logformat",
+ .altname = NULL,
+ .cfunc = logformat_f,
+ .argmin = 0,
+ .argmax = 4,
+ .canpush = 0,
+ .args = N_("[-c cycle] [-s sunit]"),
+ .oneline = N_("reformat the log"),
+ .help = logformat_help,
+};
+
+void
+logformat_init(void)
+{
+ if (!expert_mode)
+ return;
+
+ add_command(&logformat_cmd);
+}
diff --git a/db/logformat.h b/db/logformat.h
new file mode 100644
index 0000000..f9763ee
--- /dev/null
+++ b/db/logformat.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+void logformat_init(void);
--
2.1.0
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
