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systemid: Add built-in systemid command.

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Make it easy to find the system ID when testing.
Also show in general debug output.
This commit is contained in:
Alasdair G Kergon 2015-02-23 17:26:50 +00:00
parent fcebf27a9f
commit 36a6c0df46
5 changed files with 19 additions and 1 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.117 -
====================================
Add 'lvm systemid' to display the current system ID.
Fix configure to properly recognize --with-default-raid10-segtype option.
Do not refresh filters/rescan if no signature is wiped during pvcreate.
Enforce none external dev info for wiping during pvcreate to avoid races.

2
man/lvm.8.in
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@ -56,6 +56,8 @@ loading \fBlvm.conf\fP(5) and any other configuration files.
.TP
\fBsegtypes\fP \(em Display recognised Logical Volume segment types.
.TP
\fBsystemid\fP \(em Display the system ID, if any, currently set on this host.
.TP
\fBtags\fP \(em Display any tags defined on this host.
.TP
\fBversion\fP \(em Display version information.

2
tools/Makefile.in
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@ -166,7 +166,7 @@ liblvm2cmd.$(LIB_SUFFIX).$(LIB_VERSION): liblvm2cmd.$(LIB_SUFFIX)
.commands: $(srcdir)/commands.h $(srcdir)/cmdnames.h Makefile
$(CC) -E -P $(srcdir)/cmdnames.h 2> /dev/null | \
egrep -v '^ *(|#.*|devtypes|dumpconfig|formats|help|pvdata|segtypes|tags|version) *$$' > .commands
egrep -v '^ *(|#.*|devtypes|dumpconfig|formats|help|pvdata|segtypes|systemid|tags|version) *$$' > .commands
ifneq ("$(CFLOW_CMD)", "")
CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))

5
tools/commands.h
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@ -890,6 +890,11 @@ xx(segtypes,
PERMITTED_READ_ONLY,
"segtypes\n")
xx(systemid,
"Display the system ID, if any, currently set on this host",
PERMITTED_READ_ONLY,
"systemid\n")
xx(tags,
"List tags defined on this host",
PERMITTED_READ_ONLY,

10
tools/lvmcmdline.c
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@ -977,6 +977,15 @@ static int _merge_synonym(struct cmd_context *cmd, int oldarg, int newarg)
return 1;
}
int systemid(struct cmd_context *cmd __attribute__((unused)),
int argc __attribute__((unused)),
char **argv __attribute__((unused)))
{
log_print("System ID: %s", cmd->system_id ? : "");
return ECMD_PROCESSED;
}
int version(struct cmd_context *cmd __attribute__((unused)),
int argc __attribute__((unused)),
char **argv __attribute__((unused)))
@ -1456,6 +1465,7 @@ int lvm_run_command(struct cmd_context *cmd, int argc, char **argv)
init_dmeventd_monitor(monitoring);
log_debug("Processing: %s", cmd->cmd_line);
log_debug("System ID: %s", cmd->system_id ? : "");
#ifdef O_DIRECT_SUPPORT
log_debug("O_DIRECT will be used");