Avamar：无法从使用 FLR 的虚拟机备份中恢复文件

Summary: 由于代理无法解析备份目标 DNS 名称，因此无法从使用 FLR 的虚拟机备份中恢复文件。

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Symptoms

不适用 

  • 浏览使用 FLR 的虚拟机备份时，如果失败，则显示以下错误消息：
 
kA23a000000GJ2pCAG_3_0
  • 即使是我们正在浏览的虚拟机也没有达到任何 FLR 限制。
  • 通过检查代理上的 FLR 日志，我们可以看到 /usr/local/avamarclient/bin/logs 目录内 MountMgr.log 文件中的错误消息，指明代理无法从备份目标服务器 (DD) 获取备份列表，并且该列表不在那里：
[MM - DEBUG] TID=140213502355139 MID=30870: sAssetPath = /mnt/dunion/<vCenter_name>/VirtualMachines/<VM_name_UUID>/by-number/0000149 [MM - DEBUG] TID=140213502355139 MID=30871: sClientId = [MM - DEBUG] TID=140213502355139 MID=30872: sMountedAvFS = /mnt/dunion/<vCenter_name>/VirtualMachines/<VM_name_UUID>/by-number/0000149/VMFiles [MM - ERROR] TID=140213502355139 MID=30873: HLPR_ListOfDirectories failed for /mnt/dunion/<vCenter_name>/VirtualMachines/<VM_name_UUID>/by-number/0000149/VMFiles [MM - FUNC] TID=140213502355139 MID=30874: IVmdkManager::GetAllAvailableDiskIndexes LEAVE [MM - ERROR] TID=9923 MID=30875: Unable to find backed up VMDK images for: /mnt/dunion/<vCenter_name>/VirtualMachines/<VM_name_UUID>/by-number/0000149
 
  • 如果存在备份，我们会从 Avamar 实用程序节点看到如下内容：
mccli backup show --name=/<vCenter_name>/VirtualMachines/<VM_name_UUID>
0,23000,CLI command completed successfully.
Created             LabelNum Size     Retention Hostname                           Location Consistent Level Tier
------------------- -------- -------- --------- ---------------------------------- -------- ---------------- ------
yyyy-mm-dd hh:mm PM 149      ##.# GB D         <AVAMAR_FQDN>                       Local    file             Active

 
  • 此外，我们还可以看到正确的 Avamar IP 已位于 /usr/local/avamar/var 目录内的 axionfs.cmd 文件中，如下所示：
--server=xxx.xxx.xxx.xxx
--id=restoreonly
--password=#################################
--fuseoptions='-s -r -f -o allow_other,use_ino'
--primarybackupdir=by-number
--inactivity_timeout=172800
--encrypt=tls
--encrypt-strength=high
(END)

Cause

  • 正在使用的代理无法解析 Data Domain FQDN 或备份目标服务器，因为我们可能会在 /usr/local/avamar/var 目录下的最新 axionfs_xxxxxxx_xxxx_xxxx_xxxxxxxxxxxx.log 中看到以下错误：
     

axionfs Info <10539>: Connecting to Data Domain Server "DD_FQDN"(1) (LSU: avamar-xxxxxxxxxx, User: "ddboost")
[axionfs] netsys::getaddrinfo failed for DD_FQDN: Name or service not known
axionfs Error <10541>: Failed to resolve Data Domain Server name "DD_FQDN" to an IP address. Data Domain login FAILED
axionfs Error <10512>: Problem logging into the DDR server index:1
axionfs Error <11014>: Could not open DDR for /, #146
[axionfs] context::loop: Nothing pending on server, only internal work (pending all=4, ext=0, int=0)
axionfs Warning <19046>: Unable to get ddr_files.xml for clientid <VM_CID> and backupid <backupid>
axionfs Warning <19047>: Unable to retrieve DDR info for 'VMConfiguration'
axionfs Error <41308>: Cannot iterate contents of '': Unable to set location information in direlem_iter for 'VMConfiguration'

Resolution

要解决此问题：
  • 通过在代理上运行以下命令，确保 AVamar 代理能够解析 FQDN：
  1. nslookup <datadomain_FQDN>
  2. nslookup <datadomain_IP>
  • 如果没有针对 Data Domain 的有效输出，请在代理上编辑 /etc/resolve.conf 文件并添加正确的 DNS 名称。 
或者 
  • 将 Data Domain 的 FQDN 和 IP 添加到代理的 /etc/hosts 文件中。

Affected Products

Avamar

Products

Avamar, Avamar Client for VMware
Article Properties
Article Number: 000067854
Article Type: Solution
Last Modified: 06 Nov 2025
Version:  3
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