Avamar：在 Avamar 來源 IB/RLCE 上用戶端退休後，垃圾收集MSG_ERR_DDR_ERROR

Summary: 如果在已停用用戶端的複寫原則或保留鎖定期間遺失 /MC_RETIRED，Avamar 目標上的垃圾收集會在 8 天後失敗。

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Symptoms

此行為會在下列組態和案例中出現：

  • 啟用不可變備份的 Avamar 來源 （IB）
  • 已啟用不可變備份 （IB） 的 Avamar 目標
  • 啟用保留鎖定法規遵循模式 （RLCE） 的 Data Domain 來源
  • 啟用保留鎖定法規遵循模式 （RLCE） 的 Data Domain 目標

複寫原則組態不包括 /MC_RETIRED 網域。

admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$ view ddrmaint.log
...
2024-09-29T06:14:35.625021-07:00 av-target ddrmaint.bin[4202]: Error: gc-finish::process_all_backups: Failed to delete empty client dir 'cur/51e83a682d09d64199cf00469262db1b07f5ef04' on ddr, client '/MC_DELETED/prod-fs-20240921_190514', rename to 'cur/DELETED/1727740800/51e83a682d09d64199cf00469262db1b07f5ef04_E0F1E861F424A74A6A31B8B4963A4CB036ACC77D', ddr result code: 5034, desc: the user has insufficient privilege
2024-09-29T06:14:35.625126-07:00 av-target ddrmaint.bin[4202]: Warning: gc-finish::process_all_cids - Failed to process backups in client dir '51e83a682d09d64199cf00469262db1b07f5ef04' for client '/MC_DELETED/prod-fs-20240921_190514'
admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$

在 Avamar 來源伺服器中，有一個用戶端提供下列資訊：

CID: 51e83a682d09d64199cf00469262db1b07f5ef04
Client hostname: /clients/Windows/prod-fs

9 月 21 日，此用戶端已停用。用戶端已移至 /MC_RETIRED/prod-fs2024.09.21.01.23.45。

在同一天，重新新增此用戶端，建立新的用戶端 ID （CID），並使用相同的用戶端主機名稱：

CID: 4140cb8f428aa413154139b186fdcaafa19eb04e
Client hostname: /clients/Windows/prod-fs

複寫原則不包含 /MC_RETIRED，且已進行複寫。

在 Avamar 目標 （av-target） 上， /usr/local/avamar/var/ddrmaintlogs/ddrmaint.log 顯示 ddrmaint move-backup 命令：

admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$ view ddrmaint.log
....
2024-09-21T12:05:22.483376-07:00 av-target ddrmaint.bin[14757]: Info: move-backup cmdline: '/usr/local/avamar/bin/ddrmaint.bin --flagfile=/usr/local/avamar/etc/usersettings.cfg --server=av-target --vardir=/usr/local/avamar/var --bindir=/usr/local/avamar/bin --id=root --password=**************** --vardir=/usr/local/avamar/var --bindir=/usr/local/avamar/bin --sysdir=/usr/local/avamar/etc move-backup --source-client=51e83a682d09d64199cf00469262db1b07f5ef04 --target-client=4140cb8f428aa413154139b186fdcaafa19eb04e --backups=0x1db0aed1ab804ea:2 --dpnid=1234567890'
2024-09-21T12:05:23.604561-07:00 av-target ddrmaint.bin[14757]: Info: RL: As the DD is in Compliance Enabled mode move-backup::movebackups will be copy-backup with no retention on ddr index(2) from cur/51e83a682d09d64199cf00469262db1b07f5ef04/1DB0AED1AB804EA to cur/4140cb8f428aa413154139b186fdcaafa19eb04e/1DB0AED1AB804EA
2024-09-21T12:05:24.610402-07:00 av-target ddrmaint.bin[14757]: Info: move-backup Successfully copied (for move) client backup cur/51e83a682d09d64199cf00469262db1b07f5ef04/1DB0AED1AB804EA:2 to cur/4140cb8f428aa413154139b186fdcaafa19eb04e/1DB0AED1AB804EA:2.
...
admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$

在 9 月 29 日的 6 天前 （9 月 27 日），出現訊息指出 GSAN 上已不再存在舊 CID 備份：

admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$ view ddrmaint.log
...
2024-09-27T06:21:50.895312-07:00 av-target ddrmaint.bin[8923]: Info: gc-finish::process_all_backups: Backup '1DB0A201463FE64' not on gsan, deleted on ddr, client dir '51e83a682d09d64199cf00469262db1b07f5ef04', client '/MC_DELETED/prod-fs-20240921_190514'
2024-09-27T06:21:50.910186-07:00 av-target ddrmaint.bin[8923]: Info: gc-finish::process_all_backups: Backup '1DB0A22594F1476' not on gsan, deleted on ddr, client dir '51e83a682d09d64199cf00469262db1b07f5ef04', client '/MC_DELETED/prod-fs-20240921_190514'
2024-09-28T06:19:59.618801-07:00 av-target ddrmaint.bin[27334]: Info: gc-finish::process_all_backups: Backup '1DB0AE8A240B1AA' not on gsan, deleted on ddr, client dir '51e83a682d09d64199cf00469262db1b07f5ef04', client '/MC_DELETED/prod-fs-20240921_190514'
2024-09-28T06:19:59.631409-07:00 av-target ddrmaint.bin[27334]: Info: gc-finish::process_all_backups: Backup '1DB0AED1AB804EA' not on gsan, deleted on ddr, client dir '51e83a682d09d64199cf00469262db1b07f5ef04', client '/MC_DELETED/prod-fs-20240921_190514'
...
admin@av-target:~/usr/local/avamar/var/ddrmaintlogs$

8 天后，出現錯誤訊息「Failed to delete empty client dir」出現：

Cause

當出現垃圾收集 （GC） 故障問題時 clientA_with_cid-1 已停用並重新新增為 clientA_with_cid-2。在複製過程中，複製器會為以下項目建立新路徑： clientA_with_cid-2 在目標上，並從中複製舊備份 clientA_with_cid-1 的輸出傳送至 clientA_with_cid-2。GC 程序嘗試刪除鎖定的檔案，導致錯誤，因為保留鎖定會阻止刪除，直到保留期間到期。

當目標的垃圾收集 （GC） 程序無法在 clientA_with_cid-1 目錄路徑。GC 程序嘗試刪除鎖定的檔案，導致錯誤，因為保留鎖定會阻止刪除，直到保留期間到期。此冗餘和無法刪除孤立複本導致了 GC 故障。

Resolution

套用下列修補程式：

  • 19.10.0.166: 338891
  • 19.12.0.186: 338894

Affected Products

Avamar Server

Products

Avamar
Article Properties
Article Number: 000241766
Article Type: Solution
Last Modified: 02 Jul 2025
Version:  3
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