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 20.04.5
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




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MD5：
DBackup_8.0.44807_Autoinstall_Ub20.04_arm64.iso           884f29aa247a91337621ea565ef466f6  
DBackup数据备份系统镜像安装指引-Ub20.04_arm64.pdf         44a1dd9e86fc2e3caa58100b4f7e5df5  

sha256sum:
DBackup_8.0.44807_Autoinstall_Ub20.04_arm64.iso           5383dbe16fef21ecd8f34aab7328c57ab4391c73dcbc7639cd6fd07e534171ef
DBackup数据备份系统镜像安装指引-Ub20.04_arm64.pdf         08f6faa9861175608aa1272bf68e2e127c5164c400012103fa8c32511d39d613


sha512sum:
DBackup_8.0.44807_Autoinstall_Ub20.04_arm64.iso           d7eeb4c787d539ac1b4c6edeba6945ff9c7434f1f2cea0e87e9abdb81fc4d707f2a0dfd48c910a2607b055d5805c553a640c57f25e6e0c168ddc1a471b9f2355
DBackup数据备份系统镜像安装指引-Ub20.04_arm64.pdf         3db97fe76b8890582b5de3e0fc6127706baa9eed9f9d2a1c25aeade184d30ceb654075da9d8a85b0f2793b366cfa2db99e61d4cfb10e587093785e1858cc0a7a