一、光盘镜像更新说明：
1、更新dbackup3版本为8.0.44807
2、调整优化自动安装脚本，使用函数化，增加安装报错及相关提示
3、调整自动安装系统盘优化，如果系统盘空间大于等于60GB，小于240GB，则根目录为32GB，如果系统盘空间大于等于240GB，则根目录为128GB。



二、光盘镜像说明：
1、操作系统版本：Ubuntu 20.04.6
2、内核版本：5.4.0-164-generic
3、迪备版本：8.0.44807



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软件预安装清单列表和版本号:

dbackup3-backupd                 8.0.44807-1.28e243f.dbg
dbackup3-common                  8.0.44807-1.28e243f.dbg
dbackup3-controller              8.0.44807-1.28e243f.dbg
dbackup3-infokist                8.0.44807-1.28e243f.dbg
dbackup3-nfsd                    8.0.44807-1.28e243f.dbg
dbackup3-nginx                   8.0.44807-1.28e243f.dbg
dbackup3-storaged                8.0.44807-1.28e243f.dbg
dbackup3-storaged-lanfree        8.0.44807-1.28e243f.dbg
dbackup-server                   8.0.28802-1.f922acac0
dbackup3-agent                   8.0.44807-1.28e243f.dbg
dbackup3-agent-file              8.0.44807-1.28e243f.dbg
dbackup3-agent-hadoop            8.0.44807-1.28e243f.dbg
dbackup3-agent-mysql             8.0.44807-1.28e243f.dbg
dbackup3-agent-ndmp              8.0.44807-1.28e243f.dbg
dbackup3-agent-obs               8.0.44807-1.28e243f.dbg
dbackup3-agent-vmware            8.0.44807-1.28e243f.dbg



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MD5：
DBackup_8.0.44807_Autoinstall_Ub20.04_amd64.iso           c90764197ade30a8eabe3cafebdf0fab  
DBackup数据备份系统镜像安装指引.pdf                       3cd3dc0dcd9890a06befbc62da1e2e57  

sha256sum:
DBackup_8.0.44807_Autoinstall_Ub20.04_amd64.iso           4b8529d4823ebf657264b69ceff4944d4e54d0fc2d8d5acc717d15b50f10675b
DBackup数据备份系统镜像安装指引.pdf                       2077f0d9e83a591c4dd81576fb33c7668f22ae69a96ab6f1301b310c7718c87f

sha512sum:
DBackup_8.0.44807_Autoinstall_Ub20.04_amd64.iso           14a98640c345beac9ac930ab1a1233c1c4b1f00eaa3701ea78b9a63f4b3f0f0de0a47dbbf57b6f4b2ca1d1819d8aaee71b02e34c328e89e990b18ee43cda7973
DBackup数据备份系统镜像安装指引.pdf                       ee29ad42ce44df3613e2222570fa0328cb8dfaa141e2214aebaae315a139617cc9abfeaede6ad71579b5da9c053275b0309c57e05cd392dcf648fda0989d9ba1