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public:features:cbt-bug-identification-check:home [2020/10/08 14:12]
ronnie.chan
public:features:cbt-bug-identification-check:home [2020/10/08 14:55] (current)
ronnie.chan
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 ====== VMware vCenter/​ESXi CBT Bug Identification Check ====== ====== VMware vCenter/​ESXi CBT Bug Identification Check ======
  
-Latest revision: 2020-10-07+Latest revision: 2020-10-08 
 + 
 +===== The VMware CBT Bug =====
  
 To enhance critical notification to our customers using our VMware vCenter/​ESXi backup solution, a VMware version check feature on each backup job has been added, as there is a known VMware Changed Block Tracking (CBT) bug which exists on the following versions of VMware vCenter/​ESXi:​ To enhance critical notification to our customers using our VMware vCenter/​ESXi backup solution, a VMware version check feature on each backup job has been added, as there is a known VMware Changed Block Tracking (CBT) bug which exists on the following versions of VMware vCenter/​ESXi:​
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   * VMware vCenter/​ESXi v6.0   * VMware vCenter/​ESXi v6.0
  
-This known VMware CBT bug can sometimes return incorrect changed sectors on a guest virtual machine during a VMware backup. As the CBT is used by the AhsayOBM ​for VDDK backup modes, it affects the integrity of both incremental and differential backups.+This known VMware CBT bug can sometimes return incorrect changed sectors on a guest virtual machine during a VMware backup. As the CBT is used by the CloudBacko Pro for VDDK backup modes, it affects the integrity of both incremental and differential backups.
  
 <WRAP info> <WRAP info>
 +==== Information from VMware ====
 +
   * For VMware vCenter/​ESXi v5.0, v5.1, and v5.5, refer to [https://​kb.vmware.com/​s/​article/​2090639]   * For VMware vCenter/​ESXi v5.0, v5.1, and v5.5, refer to [https://​kb.vmware.com/​s/​article/​2090639]
   * For VMware vCenter/​ESXi v6.0, refer to [https://​kb.vmware.com/​s/​article/​2136854]   * For VMware vCenter/​ESXi v6.0, refer to [https://​kb.vmware.com/​s/​article/​2136854]
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 As part of the backup job, CloudBacko Pro v4.1.4 (or above) will check the current VMware version to identify if it is affected by the CBT bug. If the VMware version detected is related to the affected version (i.e. v5.0, v5.1, v5.5 and v6.0), then CloudBacko Pro will show a warning in the Backup Report indicating that the VMware host is affected by the CBT bug. As part of the backup job, CloudBacko Pro v4.1.4 (or above) will check the current VMware version to identify if it is affected by the CBT bug. If the VMware version detected is related to the affected version (i.e. v5.0, v5.1, v5.5 and v6.0), then CloudBacko Pro will show a warning in the Backup Report indicating that the VMware host is affected by the CBT bug.
  
-===== Backup Report Sample ​for a VMware ESXi 5.1.0 host with the affected version ​=====+===== Bug Identification Check in v4.1.4 ===== 
 + 
 +Below is a sample of backup report ​for a VMware ESXi 5.1.0 host with the affected version:
  
 {{public:​features:​cbt-bug-identification-check:​cbt-bug-01a.png}} {{public:​features:​cbt-bug-identification-check:​cbt-bug-01a.png}}
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 <WRAP info> <WRAP info>
-Although CloudBacko v4 (or above) no longer supports the creation of new VMware backup set for VMware vCenter/​ESXi v5.0 and v5.1, however, backup sets which are upgraded from the previous versions are still supported with the following workaround:+==== Workaround for vCenter/​ESXi v5.0 and v5.1 ==== 
 + 
 +Although CloudBacko v4 (or above) no longer supports the creation of new VMware backup set for VMware vCenter/​ESXi v5.0 and v5.1, backup sets which are upgraded from the previous versions are still supported with the following workaround:
  
   - Download the VDDK v6 API files from here: https://​download.ahsay.com/​support/​vddk6.zip   - Download the VDDK v6 API files from here: https://​download.ahsay.com/​support/​vddk6.zip
- +  - Stop the AhsayOBM services. 
-    ​Stop the AhsayOBM services. +  ​- ​Stop the AhsayOBM NFS service. 
- +  ​- ​Make a copy of the current folder %OBM_INSTALL%\bin\x64. 
-    ​Stop the AhsayOBM NFS service. +  ​- ​Using Windows Explorer open folder %OBM_INSTALL%\bin\x64. 
- +  ​- ​Delete the following 13 .dll files from the %OBM_INSTALL%\bin\x64 folder. 
-    ​Make a copy of the current folder %OBM_INSTALL%\bin\x64. +    ​* ​diskLibPlugin.dll 
- +    ​* ​libexpat.dll 
-    ​Using Windows Explorer open folder %OBM_INSTALL%\bin\x64. +    ​* ​lookup-types.dll 
- +    ​* ​msvcp120.dll 
-    ​Delete the following 13 .dll files from the %OBM_INSTALL%\bin\x64 folder. +    ​* ​msvcr120.dll 
-        diskLibPlugin.dll +    ​* ​pcre.dll 
-        libexpat.dll +    ​* ​sqlite3.dll 
-        lookup-types.dll +    ​* ​ssoclient.dll 
-        msvcp120.dll +    ​* ​vddkVimAccess.dll 
-        msvcr120.dll +    ​* ​vim-types.dll 
-        pcre.dll +    ​* ​vmacore.dll 
-        sqlite3.dll +    ​* ​vmomi.dll 
-        ssoclient.dll +    ​* ​zlib1.dll 
-        vddkVimAccess.dll +  ​- ​Unzip the downloaded vddk.zip file and copy the contents %OBM_INSTALL%\bin\x64 folder. 
-        vim-types.dll +  ​- ​Start the AhsayOBM services. 
-        vmacore.dll +  ​- ​Start the AhsayOBM NFS service. 
-        vmomi.dll +</​WRAP>​ 
-        zlib1.dll +<WRAP info> 
-    Unzip the downloaded vddk.zip file and copy the contents %OBM_INSTALL%\bin\x64 folder. +==== List of VDDK 6 API files ==== 
- +    * glib-2.0.dll 
-    ​Start the AhsayOBM services. +    * gobject-2.0.dll 
- +    * gthread-2.0.dll 
-    ​Start the AhsayOBM NFS service. +    * gvmomi.dll 
 +    * iconv.dll 
 +    * intl.dll 
 +    * libcurl.dll 
 +    * libeay32.dll 
 +    * liblber.dll 
 +    * libldap.dll 
 +    * libldap_r.dll 
 +    * libxml2.dll 
 +    * ssleay32.dll 
 +    * VddkJNI.dll 
 +    * vixDiskLib.dll 
 +    * vixDiskLibVim.dll 
 +    * vixMntapi.dll
 </​WRAP>​ </​WRAP>​
public/features/cbt-bug-identification-check/home.1602137577.txt.gz · Last modified: 2020/10/08 14:12 by ronnie.chan