Files
MariaDB-open-code/mysys/errors.c
Sujatha Sivakumar 3a8f43bec7 Bug#22897202: RPL_IO_THD_WAIT_FOR_DISK_SPACE HAS OCCASIONAL
FAILURES

Analysis:
=========
Test script is not ensuring that "assert_grep.inc" should be
called only after 'Disk is full' error is written to the
error log.

Test checks for "Queueing master event to the relay log"
state. But this state is set before invoking 'queue_event'.
Actual 'Disk is full' error happens at a very lower level.
It can happen that we might even reset the debug point
before even the actual disk full simulation occurs and the
"Disk is full" message will never appear in the error log.

In order to guarentee that we must have some mechanism where
in after we write "Disk is full" error messge into the error
log we must signal the test to execute SSS and then reset
the debug point. So that test is deterministic.

Fix:
===
Added debug sync point to make script deterministic.
2016-04-19 11:44:34 +05:30

138 lines
6.0 KiB
C

/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. 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; version 2 of the License.
This program is distributed in the hope that it will 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 to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include "mysys_priv.h"
#include "mysys_err.h"
#include "m_string.h"
#ifndef SHARED_LIBRARY
const char *globerrs[GLOBERRS]=
{
"Can't create/write to file '%s' (Errcode: %d)",
"Error reading file '%s' (Errcode: %d)",
"Error writing file '%s' (Errcode: %d)",
"Error on close of '%s' (Errcode: %d)",
"Out of memory (Needed %u bytes)",
"Error on delete of '%s' (Errcode: %d)",
"Error on rename of '%s' to '%s' (Errcode: %d)",
"",
"Unexpected eof found when reading file '%s' (Errcode: %d)",
"Can't lock file (Errcode: %d)",
"Can't unlock file (Errcode: %d)",
"Can't read dir of '%s' (Errcode: %d)",
"Can't get stat of '%s' (Errcode: %d)",
"Can't change size of file (Errcode: %d)",
"Can't open stream from handle (Errcode: %d)",
"Can't get working dirctory (Errcode: %d)",
"Can't change dir to '%s' (Errcode: %d)",
"Warning: '%s' had %d links",
"Warning: %d files and %d streams is left open\n",
"Disk is full writing '%s' (Errcode: %d). Waiting for someone to free space... (Expect up to %d secs delay for server to continue after freeing disk space)",
"Can't create directory '%s' (Errcode: %d)",
"Character set '%s' is not a compiled character set and is not specified in the '%s' file",
"Out of resources when opening file '%s' (Errcode: %d)",
"Can't read value for symlink '%s' (Error %d)",
"Can't create symlink '%s' pointing at '%s' (Error %d)",
"Error on realpath() on '%s' (Error %d)",
"Can't sync file '%s' to disk (Errcode: %d)",
"Collation '%s' is not a compiled collation and is not specified in the '%s' file",
"File '%s' not found (Errcode: %d)",
"File '%s' (fileno: %d) was not closed",
"Can't change ownership of the file '%s' (Errcode: %d)",
"Can't change permissions of the file '%s' (Errcode: %d)",
"Can't seek in file '%s' (Errcode: %d)"
};
void init_glob_errs(void)
{
/* This is now done statically. */
}
#else
void init_glob_errs()
{
EE(EE_CANTCREATEFILE) = "Can't create/write to file '%s' (Errcode: %d)";
EE(EE_READ) = "Error reading file '%s' (Errcode: %d)";
EE(EE_WRITE) = "Error writing file '%s' (Errcode: %d)";
EE(EE_BADCLOSE) = "Error on close of '%'s (Errcode: %d)";
EE(EE_OUTOFMEMORY) = "Out of memory (Needed %u bytes)";
EE(EE_DELETE) = "Error on delete of '%s' (Errcode: %d)";
EE(EE_LINK) = "Error on rename of '%s' to '%s' (Errcode: %d)";
EE(EE_EOFERR) = "Unexpected eof found when reading file '%s' (Errcode: %d)";
EE(EE_CANTLOCK) = "Can't lock file (Errcode: %d)";
EE(EE_CANTUNLOCK) = "Can't unlock file (Errcode: %d)";
EE(EE_DIR) = "Can't read dir of '%s' (Errcode: %d)";
EE(EE_STAT) = "Can't get stat of '%s' (Errcode: %d)";
EE(EE_CANT_CHSIZE) = "Can't change size of file (Errcode: %d)";
EE(EE_CANT_OPEN_STREAM)= "Can't open stream from handle (Errcode: %d)";
EE(EE_GETWD) = "Can't get working directory (Errcode: %d)";
EE(EE_SETWD) = "Can't change dir to '%s' (Errcode: %d)";
EE(EE_LINK_WARNING) = "Warning: '%s' had %d links";
EE(EE_OPEN_WARNING) = "Warning: %d files and %d streams is left open\n";
EE(EE_DISK_FULL) = "Disk is full writing '%s'. Waiting for someone to free space...";
EE(EE_CANT_MKDIR) ="Can't create directory '%s' (Errcode: %d)";
EE(EE_UNKNOWN_CHARSET)= "Character set '%s' is not a compiled character set and is not specified in the %s file";
EE(EE_OUT_OF_FILERESOURCES)="Out of resources when opening file '%s' (Errcode: %d)";
EE(EE_CANT_READLINK)= "Can't read value for symlink '%s' (Error %d)";
EE(EE_CANT_SYMLINK)= "Can't create symlink '%s' pointing at '%s' (Error %d)";
EE(EE_REALPATH)= "Error on realpath() on '%s' (Error %d)";
EE(EE_SYNC)= "Can't sync file '%s' to disk (Errcode: %d)";
EE(EE_UNKNOWN_COLLATION)= "Collation '%s' is not a compiled collation and is not specified in the %s file";
EE(EE_FILENOTFOUND) = "File '%s' not found (Errcode: %d)";
EE(EE_FILE_NOT_CLOSED) = "File '%s' (fileno: %d) was not closed";
EE(EE_CHANGE_OWNERSHIP) = "Can't change ownership of the file '%s' (Errcode: %d)";
EE(EE_CHANGE_PERMISSIONS) = "Can't change permissions of the file '%s' (Errcode: %d)";
EE(EE_CANT_SEEK) = "Can't seek in file '%s' (Errcode: %d)";
}
#endif
/*
We cannot call my_error/my_printf_error here in this function.
Those functions will set status variable in diagnostic area
and there is no provision to reset them back.
Here we are waiting for free space and will wait forever till
space is created. So just giving warning in the error file
should be enough.
*/
void wait_for_free_space(const char *filename, int errors)
{
size_t time_to_sleep= MY_WAIT_FOR_USER_TO_FIX_PANIC;
if (!(errors % MY_WAIT_GIVE_USER_A_MESSAGE))
{
my_printf_warning(EE(EE_DISK_FULL),
filename,my_errno,MY_WAIT_FOR_USER_TO_FIX_PANIC);
my_printf_warning("Retry in %d secs. Message reprinted in %d secs",
MY_WAIT_FOR_USER_TO_FIX_PANIC,
MY_WAIT_GIVE_USER_A_MESSAGE * MY_WAIT_FOR_USER_TO_FIX_PANIC );
}
DBUG_EXECUTE_IF("simulate_no_free_space_error",
{
time_to_sleep= 1;
});
DBUG_EXECUTE_IF("simulate_io_thd_wait_for_disk_space",
{
time_to_sleep= 1;
});
(void) sleep(time_to_sleep);
DEBUG_SYNC_C("disk_full_reached");
}
const char **get_global_errmsgs()
{
return globerrs;
}