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Avamar: Avamar VMware Backup Randomly Fails with ERROR: 0237 Cannot create thread (11) Resource temporarily unavailable

Summary: Avamar VMware Backup Randomly Fails with ERROR: 0237 Cannot create thread (11) Resource temporarily unavailable after upgrading to proxy 19.3.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

  • Deploying proxy version 19.3 using proxy deployment manager.


  • When Using proxy version 19.3, random VM image backups fail showing below error messages: 
    [VcbImageBackupAssistThread]  ERROR: <0237> Cannot create thread (11) Resource temporarily unavailable
avvcbimage Info <43574>: vcApiVersion 6.5
avvcbimage Info <43575>: VSphereHTTP::vcVersion65 will be true
avvcbimage Info <42137>: job type = 4
.
avvcbimage Info <16041>: VDDK:VixDiskLib: Advanced transport plugin /usr/lib/vmware-vix-disklib/lib64/libdiskLibPlugin.so was successfully loaded into vixDiskLib.
avvcbimage Info <16041>: VDDK:VixDiskLib: Enabling advanced transport modes.
[VcbImageBackupAssistThread]  ERROR: <0001> threadimpl::runthread Exception Resource temporarily unavailable
avvcbimage Info <9772>: Starting graceful (staged) termination, MCS cancel (wrap-up stage)

Cause

  • Proxy tasks count exceeded the value (512) set for "TasksMax" , even if the value is set to "infinity" in the file "/etc/systemd/system/multi-user.target.wants/avagent.service" as below: 
    <Proxy_Name>:~ # less /etc/systemd/system/multi-user.target.wants/avagent.service
.
[Service]
ExecStart=/etc/init.d/avagent start
ExecStop=/etc/init.d/avagent stop
KillMode=process
Restart=on-abort
RemainAfterExit=yes
TasksMax=infinity
  • Also when checking task counting from Service "vami-sfcb.service", it shows the correct tasks count as below: 
    <Proxy_Name>:~ # systemctl status vami-sfcb.service
  vami-sfcb.service - LSB: Small Footprint CIM Broker Service
   Loaded: loaded (/etc/init.d/vami-sfcb; disabled; vendor preset: disabled)
   Active: active (running) since <DAY> <yyyy-mm-dd hh:mm:ss UTC; # days ago
     Docs: man:systemd-sysv-generator(8)
    Tasks: 16 (limit: 512)
   CGroup: /system.slice/vami-sfcb.service
              6873 /opt/vmware/sbin/vami-sfcbd -d
              6878 /opt/vmware/sbin/vami-sfcbd -d
              6882 /opt/vmware/sbin/vami-sfcbd -d
              6883 /opt/vmware/sbin/vami-sfcbd -d
              6892 /opt/vmware/sbin/vami-sfcbd -d
              6901 /opt/vmware/sbin/vami-sfcbd -d
             11366 /usr/local/avamarclient/bin/avagent.bin --listenport=28009...
  • But when checking task counting number from "avagent.service" , it shows "0" value, which means it is not counting tasks correctly as below: 
    <Proxy_Name>:~ # systemctl status avagent.service
  avagent.service - Avamar Unix backup/restore agent (avagent)
   Loaded: loaded (/usr/lib/systemd/system/avagent.service; enabled; vendor preset: disabled)
   Active: active (exited) since <Day> <yyyy-mm-dd hh:mm:ss UTC; # ago
 Main PID: 1286 (code=exited, status=0/SUCCESS)
    Tasks: 0
   CGroup: /system.slice/avagent.service
             1476 /usr/local/avamarclient/bin/avagent.bin --listenport=28009 ...

Resolution

  1. On the proxy, verify that "TasksMax" value is set to "infinity" in the file "/etc/systemd/system/multi-user.target.wants/avagent.service" as below: 
    <Proxy_Name>:~ # less /etc/systemd/system/multi-user.target.wants/avagent.service
.
[Service]
ExecStart=/etc/init.d/avagent start
ExecStop=/etc/init.d/avagent stop
KillMode=process
Restart=on-abort
RemainAfterExit=yes
TasksMax=infinity
  2. Enable Service "vami-sfcb" on the proxy as below: 
    <Proxy_Name>:~ # systemctl enable vami-sfcb
Synchronizing state of vami-sfcb.service with SysV init with /usr/lib/systemd/systemd-sysv-install...
Executing /usr/lib/systemd/systemd-sysv-install enable vami-sfcb
Created symlink from /etc/systemd/system/multi-user.target.wants/vami-sfcb.service to /usr/lib/systemd/system/vami-sfcb.service.
  3. Reboot the proxy using 'reboot' command.
  4. Verify that the service "avagent.service" is showing the correct task counting and not zero as below: 
    <Proxy_Name>:~ # systemctl status avagent.service
  avagent.service - Avamar Unix backup/restore agent (avagent)
   Loaded: loaded (/usr/lib/systemd/system/avagent.service; enabled; vendor preset: disabled)
   Active: active (exited) since <Day> <yyyy-mm-dd hh:mm:ss UTC; # ago
 Main PID: 1286 (code=exited, status=0/SUCCESS)
    Tasks: 16
   CGroup: /system.slice/avagent.service
             1476 /usr/local/avamarclient/bin/avagent.bin --listenport=28009 ...

Affected Products

Avamar

Products

Avamar, Avamar Client for VMware
Article Properties
Article Number: 000173642
Article Type: Solution
Last Modified: 20 Nov 2020
Version:  2
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