[lvm-devel] master - lvmpolld-client.c: explain known return codes
okozina
okozina at fedoraproject.org
Fri May 15 18:37:14 UTC 2015
Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=6cdd153b891527d04f36e2c7feb34a6aebdc63df
Commit: 6cdd153b891527d04f36e2c7feb34a6aebdc63df
Parent: 333fdfd4b69d04ff94eca644d335567dd70bc589
Author: Ondrej Kozina <okozina at redhat.com>
AuthorDate: Thu May 14 16:44:31 2015 +0200
Committer: Ondrej Kozina <okozina at redhat.com>
CommitterDate: Fri May 15 20:31:54 2015 +0200
lvmpolld-client.c: explain known return codes
lvmpolld returns few well known return codes. Explain
these to users and suggest reading lvmpolld log files
for more details
---
lib/lvmpolld/lvmpolld-client.c | 37 ++++++++++++++++++++++++++++++++-----
1 files changed, 32 insertions(+), 5 deletions(-)
diff --git a/lib/lvmpolld/lvmpolld-client.c b/lib/lvmpolld/lvmpolld-client.c
index 91f77eb..58bc86f 100644
--- a/lib/lvmpolld/lvmpolld-client.c
+++ b/lib/lvmpolld/lvmpolld-client.c
@@ -20,6 +20,7 @@
#include "metadata-exported.h"
#include "polldaemon.h"
#include "toolcontext.h"
+#include "lvm2cmd.h"
struct progress_info {
unsigned error:1;
@@ -88,6 +89,33 @@ void lvmpolld_disconnect(void)
}
}
+static void _explain_error_codes(int retcode)
+{
+ switch (retcode) {
+ /* LVM2 return codes */
+ case LVM2_NO_SUCH_COMMAND:
+ log_error("LVM command run by lvmpolld responded with: 'No such command.'");
+ break;
+ case LVM2_INVALID_PARAMETERS:
+ log_error("LVM command run by lvmpolld failed due to invalid parameters.");
+ break;
+ case LVM2_PROCESSING_FAILED:
+ log_error("LVM command executed by lvmpolld failed.");
+ break;
+
+ /* lvmpolld specific return codes */
+ case LVMPD_RET_DUP_FAILED:
+ log_error("lvmpolld failed to duplicate file descriptors.");
+ case LVMPD_RET_EXC_FAILED:
+ log_error("lvmpolld failed to exec() lvm binary.");
+ break;
+ default:
+ log_error("lvmpolld responded with unexpected return code.");
+ }
+
+ log_print_unless_silent("For more information see lvmpolld messages in syslog or lvmpolld log file.");
+}
+
static void _process_error_response(daemon_reply rep)
{
if (!strcmp(daemon_reply_str(rep, "response", ""), LVMPD_RESP_FAILED))
@@ -102,7 +130,7 @@ static void _process_error_response(daemon_reply rep)
daemon_reply_str(rep, "response", "<empty>"),
daemon_reply_str(rep, "reason", "<empty>"));
- log_print_unless_silent("For more detailed information see lvmpolld log file.");
+ log_print_unless_silent("For more information see lvmpolld messages in syslog or lvmpolld log file.");
}
static struct progress_info _request_progress_info(const char *uuid, unsigned abort_polling)
@@ -310,12 +338,11 @@ int lvmpolld_request_info(const struct poll_operation_id *id, const struct daemo
if (info.finished) {
if (info.cmd_signal)
- log_error("Polling command got terminated by signal (%d).",
+ log_error("Command executed by lvmpolld got terminated by signal (%d).",
info.cmd_signal);
else if (info.cmd_retcode)
- log_error("Polling command exited with return code: %d.",
- info.cmd_retcode);
- else {
+ _explain_error_codes(info.cmd_retcode);
+ else {
log_verbose("Polling finished successfully.");
ret = 1;
}
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