• 断电后启动服务器数据盘没有数据,只有Access-Your-Private-Data.desktop README.txt


    周末办公室断电了,开发环境挂了,查出原因是数据“丢失”了。

    使用了企业级加密文件系统eCryptfs,下面开始数据恢复的过程:

    保存。


    查看

    恢复了!!

    执行路径:必须在wrapped-passphrase文件所在路径

    root@vbaas:/home/.ecryptfs/vbaas/.ecryptfs# ecryptfs-unwrap-passphrase wrapped-passphrase 
    Passphrase: 
    e26f5cd1e253d9dce9d9c3393309fcb4
    
    

    产生的字符串后面需要使用,注意保存。

    创建恢复数据的目录

    root@vbaas:/home/.ecryptfs/vbaas/.ecryptfs# cd /home/
    root@vbaas:/home# mkdir restore
    
    

    一定要执行的:

    vbaas@vbaas:/home$ sudo ecryptfs-add-passphrase --fnek
    [sudo] password for vbaas: 
    Passphrase: 
    Inserted auth tok with sig [e2551c3b2203a93b] into the user session keyring
    Inserted auth tok with sig [c5425ab9a537b0f7] into the user session keyring
    
    

    中括号中,第二个的字符串是下一轮需要使用。注意保存。

    进行数据恢复

    vbaas@vbaas:/home$ sudo mount -t ecryptfs /home/.ecryptfs/vbaas/.Private/ /home/restore
    Passphrase: 
    Select cipher: 
     1) aes: blocksize = 16; min keysize = 16; max keysize = 32
     2) blowfish: blocksize = 8; min keysize = 16; max keysize = 56
     3) des3_ede: blocksize = 8; min keysize = 24; max keysize = 24
     4) twofish: blocksize = 16; min keysize = 16; max keysize = 32
     5) cast6: blocksize = 16; min keysize = 16; max keysize = 32
     6) cast5: blocksize = 8; min keysize = 5; max keysize = 16
    Selection [aes]: 直接回车
    Select key bytes: 
     1) 16
     2) 32
     3) 24
    Selection [16]: 直接回车
    Enable plaintext passthrough (y/n) [n]: 直接回车
    Enable filename encryption (y/n) [n]: y   必须是y
    Filename Encryption Key (FNEK) Signature [e2551c3b2203a93b]: c5425ab9a537b0f7    第二个中括号中的字符串
    Attempting to mount with the following options:
      ecryptfs_unlink_sigs
      ecryptfs_fnek_sig=c5425ab9a537b0f7
      ecryptfs_key_bytes=16
      ecryptfs_cipher=aes
      ecryptfs_sig=e2551c3b2203a93b
    WARNING: Based on the contents of [/root/.ecryptfs/sig-cache.txt],
    it looks like you have never mounted with this key 
    before. This could mean that you have typed your 
    passphrase wrong.
    
    Would you like to proceed with the mount (yes/no)? : yes  必须是yes
    Would you like to append sig [e2551c3b2203a93b] to
    [/root/.ecryptfs/sig-cache.txt] 
    in order to avoid this warning in the future (yes/no)? : no 
    Not adding sig to user sig cache file; continuing with mount.
    Mounted eCryptfs
    
    

    查看恢复的数据:

    vbaas@vbaas:/home$ ls restore/
    config		  fabric_bootstrap.sh	       hyperledger-fabric-ca-linux-amd64-1.4.6.tar.gz
    env_bootstrap.sh  fabric.zip		       hyperledger-fabric-linux-amd64-2.0.1.tar.gz
    fabric		  go1.13.5.linux-amd64.tar.gz
    
    
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  • 原文地址:https://www.cnblogs.com/zoujiaojiao/p/13384556.html
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