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3932392030
Problem:If Disk becomes full while writing into the binlog, then the server instance hangs till someone frees the space. After user frees up the disk space, mysql server crashes with an assert (m_status != DA_EMPTY) Analysis: wait_for_free_space is being called in an infinite loop i.e., server instance will hang until someone frees up the space. So there is no need to set status bit in diagnostic area. Fix: Replace my_error/my_printf_error with sql_print_warning() which prints the warning in error log. include/my_sys.h: Provision to call sql_print_warning from mysys files mysys/errors.c: Replace my_error/my_printf_error with sql_print_warning() which prints the warning in error log. mysys/my_error.c: implementation of my_printf_warning mysys/my_write.c: Adding logic to break infinite loop in the simulation sql/mysqld.cc: Provision to call sql_print_warning from mysys files
128 lines
5.7 KiB
C
128 lines
5.7 KiB
C
/*
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Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mysys_priv.h"
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#include "mysys_err.h"
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#ifndef SHARED_LIBRARY
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const char * NEAR globerrs[GLOBERRS]=
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{
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"Can't create/write to file '%s' (Errcode: %d)",
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"Error reading file '%s' (Errcode: %d)",
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"Error writing file '%s' (Errcode: %d)",
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"Error on close of '%s' (Errcode: %d)",
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"Out of memory (Needed %u bytes)",
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"Error on delete of '%s' (Errcode: %d)",
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"Error on rename of '%s' to '%s' (Errcode: %d)",
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"",
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"Unexpected eof found when reading file '%s' (Errcode: %d)",
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"Can't lock file (Errcode: %d)",
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"Can't unlock file (Errcode: %d)",
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"Can't read dir of '%s' (Errcode: %d)",
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"Can't get stat of '%s' (Errcode: %d)",
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"Can't change size of file (Errcode: %d)",
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"Can't open stream from handle (Errcode: %d)",
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"Can't get working dirctory (Errcode: %d)",
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"Can't change dir to '%s' (Errcode: %d)",
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"Warning: '%s' had %d links",
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"Warning: %d files and %d streams is left open\n",
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"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)",
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"Can't create directory '%s' (Errcode: %d)",
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"Character set '%s' is not a compiled character set and is not specified in the '%s' file",
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"Out of resources when opening file '%s' (Errcode: %d)",
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"Can't read value for symlink '%s' (Error %d)",
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"Can't create symlink '%s' pointing at '%s' (Error %d)",
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"Error on realpath() on '%s' (Error %d)",
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"Can't sync file '%s' to disk (Errcode: %d)",
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"Collation '%s' is not a compiled collation and is not specified in the '%s' file",
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"File '%s' not found (Errcode: %d)",
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"File '%s' (fileno: %d) was not closed",
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"Can't change ownership of the file '%s' (Errcode: %d)",
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"Can't change permissions of the file '%s' (Errcode: %d)",
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"Can't seek in file '%s' (Errcode: %d)"
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};
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void init_glob_errs(void)
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{
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/* This is now done statically. */
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}
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#else
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void init_glob_errs()
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{
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EE(EE_CANTCREATEFILE) = "Can't create/write to file '%s' (Errcode: %d)";
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EE(EE_READ) = "Error reading file '%s' (Errcode: %d)";
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EE(EE_WRITE) = "Error writing file '%s' (Errcode: %d)";
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EE(EE_BADCLOSE) = "Error on close of '%'s (Errcode: %d)";
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EE(EE_OUTOFMEMORY) = "Out of memory (Needed %u bytes)";
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EE(EE_DELETE) = "Error on delete of '%s' (Errcode: %d)";
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EE(EE_LINK) = "Error on rename of '%s' to '%s' (Errcode: %d)";
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EE(EE_EOFERR) = "Unexpected eof found when reading file '%s' (Errcode: %d)";
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EE(EE_CANTLOCK) = "Can't lock file (Errcode: %d)";
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EE(EE_CANTUNLOCK) = "Can't unlock file (Errcode: %d)";
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EE(EE_DIR) = "Can't read dir of '%s' (Errcode: %d)";
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EE(EE_STAT) = "Can't get stat of '%s' (Errcode: %d)";
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EE(EE_CANT_CHSIZE) = "Can't change size of file (Errcode: %d)";
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EE(EE_CANT_OPEN_STREAM)= "Can't open stream from handle (Errcode: %d)";
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EE(EE_GETWD) = "Can't get working directory (Errcode: %d)";
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EE(EE_SETWD) = "Can't change dir to '%s' (Errcode: %d)";
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EE(EE_LINK_WARNING) = "Warning: '%s' had %d links";
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EE(EE_OPEN_WARNING) = "Warning: %d files and %d streams is left open\n";
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EE(EE_DISK_FULL) = "Disk is full writing '%s'. Waiting for someone to free space...";
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EE(EE_CANT_MKDIR) ="Can't create directory '%s' (Errcode: %d)";
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EE(EE_UNKNOWN_CHARSET)= "Character set '%s' is not a compiled character set and is not specified in the %s file";
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EE(EE_OUT_OF_FILERESOURCES)="Out of resources when opening file '%s' (Errcode: %d)";
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EE(EE_CANT_READLINK)= "Can't read value for symlink '%s' (Error %d)";
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EE(EE_CANT_SYMLINK)= "Can't create symlink '%s' pointing at '%s' (Error %d)";
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EE(EE_REALPATH)= "Error on realpath() on '%s' (Error %d)";
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EE(EE_SYNC)= "Can't sync file '%s' to disk (Errcode: %d)";
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EE(EE_UNKNOWN_COLLATION)= "Collation '%s' is not a compiled collation and is not specified in the %s file";
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EE(EE_FILENOTFOUND) = "File '%s' not found (Errcode: %d)";
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EE(EE_FILE_NOT_CLOSED) = "File '%s' (fileno: %d) was not closed";
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EE(EE_CHANGE_OWNERSHIP) = "Can't change ownership of the file '%s' (Errcode: %d)";
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EE(EE_CHANGE_PERMISSIONS) = "Can't change permissions of the file '%s' (Errcode: %d)";
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EE(EE_CANT_SEEK) = "Can't seek in file '%s' (Errcode: %d)";
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}
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#endif
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/*
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We cannot call my_error/my_printf_error here in this function.
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Those functions will set status variable in diagnostic area
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and there is no provision to reset them back.
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Here we are waiting for free space and will wait forever till
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space is created. So just giving warning in the error file
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should be enough.
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*/
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void wait_for_free_space(const char *filename, int errors)
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{
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if (!(errors % MY_WAIT_GIVE_USER_A_MESSAGE))
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{
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my_printf_warning(EE(EE_DISK_FULL),
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filename,my_errno,MY_WAIT_FOR_USER_TO_FIX_PANIC);
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my_printf_warning("Retry in %d secs. Message reprinted in %d secs",
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MY_WAIT_FOR_USER_TO_FIX_PANIC,
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MY_WAIT_GIVE_USER_A_MESSAGE * MY_WAIT_FOR_USER_TO_FIX_PANIC );
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}
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DBUG_EXECUTE_IF("simulate_file_write_error_once",
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{
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VOID(sleep(1));
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return;
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});
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VOID(sleep(MY_WAIT_FOR_USER_TO_FIX_PANIC));
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}
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