From 57d45bfc736a679f14a96e42e95185b1217fd3cb Mon Sep 17 00:00:00 2001 From: Ian Date: Fri, 30 Jul 2021 15:50:19 +0800 Subject: [PATCH 1/3] update br faq --- br/backup-and-restore-faq.md | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/br/backup-and-restore-faq.md b/br/backup-and-restore-faq.md index 4e108f7b341f..84a4b75801e7 100644 --- a/br/backup-and-restore-faq.md +++ b/br/backup-and-restore-faq.md @@ -21,9 +21,7 @@ To reduce the impact on the cluster, you can use the `--ratelimit` parameter to ## Does BR back up system tables? During data restoration, do they raise conflict? -The system schemas (`information_schema`, `performance_schema`, `mysql`) are filtered out during full backup. For more details, refer to the [Backup Principle](/br/backup-and-restore-tool.md#implementation-principles). - -Because these system schemas do not exist in the backup files, no conflict occurs among system tables during data restoration. +Before v5.1.0, BR filtered out data from the system schema mysql during the backup. Since v5.1.0, BR backs up all data by default, including the system schemas mysql.*. But the technical implementation of restoring the system tables in mysql.* is not complete yet, so the tables in the system schema mysql are not restored by default. For more details, refer to the [Back up and restore table data in the mysql system schema](back-up-and-restore-table-data-in-the-mysql-system-schema-experimental-feature). ## What should I do to handle the `Permission denied` or `No such file or directory` error, even if I have tried to run BR using root in vain? From 6567fb747c24dcee80e55d5f0dae94602590c9ea Mon Sep 17 00:00:00 2001 From: Ian Date: Fri, 30 Jul 2021 15:56:50 +0800 Subject: [PATCH 2/3] fix link --- br/backup-and-restore-faq.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/br/backup-and-restore-faq.md b/br/backup-and-restore-faq.md index 84a4b75801e7..374d18f6da6f 100644 --- a/br/backup-and-restore-faq.md +++ b/br/backup-and-restore-faq.md @@ -21,7 +21,7 @@ To reduce the impact on the cluster, you can use the `--ratelimit` parameter to ## Does BR back up system tables? During data restoration, do they raise conflict? -Before v5.1.0, BR filtered out data from the system schema mysql during the backup. Since v5.1.0, BR backs up all data by default, including the system schemas mysql.*. But the technical implementation of restoring the system tables in mysql.* is not complete yet, so the tables in the system schema mysql are not restored by default. For more details, refer to the [Back up and restore table data in the mysql system schema](back-up-and-restore-table-data-in-the-mysql-system-schema-experimental-feature). +Before v5.1.0, BR filtered out data from the system schema mysql during the backup. Since v5.1.0, BR backs up all data by default, including the system schemas mysql.*. But the technical implementation of restoring the system tables in mysql.* is not complete yet, so the tables in the system schema mysql are not restored by default. For more details, refer to the [Back up and restore table data in the mysql system schema](/br/backup-and-restore-tool.md#back-up-and-restore-table-data-in-the-mysql-system-schema-experimental-feature). ## What should I do to handle the `Permission denied` or `No such file or directory` error, even if I have tried to run BR using root in vain? From 875e951e8fc40b6ad72f6f22494fae4207f8bd93 Mon Sep 17 00:00:00 2001 From: TomShawn <41534398+TomShawn@users.noreply.github.com> Date: Fri, 30 Jul 2021 18:21:30 +0800 Subject: [PATCH 3/3] Update br/backup-and-restore-faq.md --- br/backup-and-restore-faq.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/br/backup-and-restore-faq.md b/br/backup-and-restore-faq.md index 374d18f6da6f..414f02b21ff0 100644 --- a/br/backup-and-restore-faq.md +++ b/br/backup-and-restore-faq.md @@ -21,7 +21,7 @@ To reduce the impact on the cluster, you can use the `--ratelimit` parameter to ## Does BR back up system tables? During data restoration, do they raise conflict? -Before v5.1.0, BR filtered out data from the system schema mysql during the backup. Since v5.1.0, BR backs up all data by default, including the system schemas mysql.*. But the technical implementation of restoring the system tables in mysql.* is not complete yet, so the tables in the system schema mysql are not restored by default. For more details, refer to the [Back up and restore table data in the mysql system schema](/br/backup-and-restore-tool.md#back-up-and-restore-table-data-in-the-mysql-system-schema-experimental-feature). +Before v5.1.0, BR filtered out data from the system schema `mysql` during the backup. Since v5.1.0, BR **backs up** all data by default, including the system schemas `mysql.*`. But the technical implementation of restoring the system tables in `mysql.*` is not complete yet, so the tables in the system schema `mysql` are **not** restored by default. For more details, refer to the [Back up and restore table data in the `mysql` system schema (experimental feature)](/br/backup-and-restore-tool.md#back-up-and-restore-table-data-in-the-mysql-system-schema-experimental-feature). ## What should I do to handle the `Permission denied` or `No such file or directory` error, even if I have tried to run BR using root in vain?