PowerFlex 4.x 韌體更新失敗，並顯示 US-ASCII 中的位元組順序無效

案例

叢集正在使用資源群組執行韌體升級。

症狀

來自作業 ID 的deployment.log報告韌體更新失敗，且 playbook 正在執行中。請注意，playbook 中的命令已設定為執行「/usr/sbin/sysctl -p」：

ERROR [2024-01-25T20:21:33.358478] 25824: service_deployment.rb:6084:in `process_firmware_update': Encountered an error during firmware update: ArgumentError: invalid byte sequence in US-ASCII
["org/jruby/RubyString.java:4727:in `scan'", "/opt/asm-deployer/lib/asm/provider/elementmanager/scaleio.rb:9762:in `update_sysctl_parameter'", "/opt/asm-deployer/lib/asm/service_deployment.rb:5909:in `block in process_firmware_update'", "org/jruby/RubyArray.java:1865:in `each'", "/opt/asm-deployer/lib/asm/service_deployment.rb:5731:in `process_firmware_update'", "/opt/asm-deployer/lib/asm/service_deployment.rb:504:in `process'", "/opt/asm-deployer/lib/asm.rb:369:in `block in process_deployment'", "org/jruby/RubyArray.java:1907:in `each_slice'", "/opt/asm-deployer/lib/asm.rb:351:in `block in process_deployment'", "/opt/dependencies/dell-asm-util/lib/asm/util.rb:22:in `block in execute_async'"]
...
INFO  [2024-01-25T20:22:45.017056] 25824: service_deployment.rb:1795:in `process_ansible_playbook': Starting processing playbook: [{"hosts"=>"all", "become"=>true, "vars"=>{"overcommit_ratio"=>100, "overcommit_memory"=>2}, "tasks"=>[{"name"=>"Replace unvalid values in sysctl conf", "replace"=>{"path"=>"/etc/sysctl.conf", "regexp"=>"^net.ipv4.conf.(ens192.log_martians.*)$", "replace"=>"#net.ipv4.conf.\\1 # PFXM REMOVED INVALID OPTION"}}, {"name"=>"Replace unvalid values in sysctl conf", "replace"=>{"path"=>"/etc/sysctl.conf", "regexp"=>"^net.ipv4.conf.(ens32.log_martians.*)$", "replace"=>"#net.ipv4.conf.\\1 # PFXM REMOVED INVALID OPTION"}}, {"name"=>"update threshold1", "ansible.posix.sysctl"=>{"name"=>"net.ipv4.neigh.default.gc_thresh1", "value"=>8192}}, {"name"=>"update threshold2", "ansible.posix.sysctl"=>{"name"=>"net.ipv4.neigh.default.gc_thresh2", "value"=>16384}}, {"name"=>"update threshold3", "ansible.posix.sysctl"=>{"name"=>"net.ipv4.neigh.default.gc_thresh3", "value"=>32768}}, {"name"=>"Update overcommit ratio for SDS", "ansible.posix.sysctl"=>{"name"=>"vm.overcommit_ratio", "value"=>"{{ overcommit_ratio }}"}}, {"name"=>"Update overcommit_memory ratio for SDS", "ansible.posix.sysctl"=>{"name"=>"vm.overcommit_memory", "value"=>"{{ overcommit_memory }}"}}, {"name"=>"Apply sysctl changes", "command"=>{"argv"=>["
]}}]}] with inventory:

...直接在節點上執行命令時，可能會出現下列錯誤：

[root@node3 etc]# /usr/sbin/sysctl -p
...
sysctl: /etc/sysctl.conf(91): invalid syntax, continuing...

影響

韌體更新無法在受影響的節點上繼續進行。

根本原因

此問題源於 sysctl.conf 檔案中的非 ASCII 字元或特殊字元，這與 sysctl 處理期間使用的預期 US-ASCII 字元編碼不相容。當系統嘗試從 sysctl.conf 讀取和套用組態時，會遇到此無效的字元順序，導致「US-ASCII 中的位元組序列無效」錯誤。這個角色被收錄的具體原因尚不清楚。 

因應措施

1- 備份受影響節點上的原始 sysctl.conf 檔案：

 cp /etc/sysctl.conf /etc/sysctl.conf.backup

2- 從已知可正常運作的節點複製 sysctl.conf 檔案：

 scp /etc/sysctl.conf root@:/etc/sysctl.conf

3- 在受影響的節點上套用新組態：

 /usr/sbin/sysctl -p

4- 確保命令順利完成，沒有任何「無效語法」錯誤。

5- 完成上述步驟並確認後，請使用資源群組重新啟動韌體更新程序。

受影響的版本 

PFxM 4.5.1.1 及更低版本

已修正問題的版本

PFxM 4.5.2