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Full Discussion: ZFS Filesystem
Operating Systems Solaris ZFS Filesystem Post 302954391 by tharmendran on Monday 7th of September 2015 10:28:54 AM
Old 09-07-2015
Hi Jlliagre,achenle,
I have set the zfs_arc_max = 4GB but still when run the backup the DB seems hangs and got error "WARNING: aiowait timed out 1 times". The memstat during backup as below;

Code:
 Page Summary                Pages                MB    %Tot
------------           ----------------  ----------------  ----
Kernel                     291354              2276           7%
ZFS File Data              519224              4056       12%
Anon                      1900341             14846        45%
Exec and libs               13193               103         0%
Page cache                    612                 4            0%
Free (cachelist)             8058                62          0%
Free (freelist)           1461522             11418      35%
Total                       4194304             32768

 

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NDB_PRINT_BACKUP_(1)					       MySQL Database System					      NDB_PRINT_BACKUP_(1)

NAME
ndb_print_backup_file - print NDB backup file contents SYNOPSIS
ndb_print_backup_file file_name DESCRIPTION
ndb_print_backup_file obtains diagnostic information from a cluster backup file. Usage ndb_print_backup_file file_name file_name is the name of a cluster backup file. This can be any of the files (.Data, .ctl, or .log file) found in a cluster backup directory. These files are found in the data node's backup directory under the subdirectory BACKUP-#, where # is the sequence number for the backup. For more information about cluster backup files and their contents, see Section 17.5.3.1, "MySQL Cluster Backup Concepts". Like ndb_print_schema_file and ndb_print_sys_file (and unlike most of the other NDB utilities that are intended to be run on a management server host or to connect to a management server) ndb_print_backup_file must be run on a cluster data node, since it accesses the data node file system directly. Because it does not make use of the management server, this utility can be used when the management server is not running, and even when the cluster has been completely shut down. Additional Options None. COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation 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 the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Oracle Corporation (http://dev.mysql.com/). MySQL 5.5 01/30/2014 NDB_PRINT_BACKUP_(1)
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