NetWorker：使用 NMDA 的 MongoDB 備份失敗
Summary: 本文解決了使用 NMDA 進行 MongoDB 備份的問題。
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Symptoms
適用於資料庫和應用程式的 NetWorker 模組 （NMDA） MongoDB 備份失敗。備份顯示：
monogdb_client:<save_set> size 0 KB, 0 file(s), took 0 min 31 sec
將會看到下列一或多個錯誤：
The size of proxied data written has not been set. Backup of ssid 'xxxxx' failed due to unrecoverable errors.
The read operation returned a value of -1. Error code: 5. Error: Input/output error.
Backup of ssid 'nnnn' failed due to unrecoverable errors
The backup command '/nsr/apps/config/backup_logscript.sh' did not complete successfully: Backup of ssid 'nnnn' failed due to unrecoverable errors. Cause
備份指令檔會使用以下方式將輸出重新導向至檔案： >。
Resolution
使用 --out 用於文件輸出，而不是將輸出定向到檔。
示例腳本部分。變更：
(
set -x;
EXEC_MYWORK="$INSTANCE_PATH_MW16_MYWORK/mongodump -u $BACKUP_USER -p $BACKUP_PASSWORD --authenticationDatabase $BACKUP_AUTHDB --gzip --port 27020 --db local --collection oplog.rs --query \"{ts: {\\\$gt: {\\\$timestamp: {t: $PASS_TIME, i: 0}}, \\\$lt: {\\\$timestamp: {t: $CURR_TIME, i: 0}}}}\" > $OAPP_MOUNT_DIR/backup_data_Oplog";
eval $EXEC_MYWORK;
)
至：
(
set -x;
EXEC_MYWORK="$INSTANCE_PATH_MW16_MYWORK/mongodump -u $BACKUP_USER -p $BACKUP_PASSWORD --authenticationDatabase $BACKUP_AUTHDB --gzip --port 27020 --db local --collection oplog.rs --query \"{ts: {\\\$gt: {\\\$timestamp: {t: $PASS_TIME, i: 0}}, \\\$lt: {\\\$timestamp: {t: $CURR_TIME, i: 0}}}}\" --out $OAPP_MOUNT_DIR/backup_data_Oplog";
eval $EXEC_MYWORK;
)Affected Products
NetWorker, NetWorker Module for Databases and ApplicationsProducts
NetWorker Family, NetWorker ModuleArticle Properties
Article Number: 000166750
Article Type: Solution
Last Modified: 01 Apr 2026
Version: 5
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