这是一个创建于 839 天前的主题，其中的信息可能已经有所发展或是发生改变。
公司有台服务器，上面配了阵列卡，3 块硬盘做了 raid5 ，另外一块热备，最初时候没配电池，后来加装的。 上周五同事反馈服务器卡顿，查询后发现，Raid5 所在分区 IO 有问题，于是去机房检查服务器状态，发现 raid 的 1 号成员盘跟热备盘同时黄灯常亮，怀疑硬盘坏了。 所以采购了新的硬盘准备替换上去，重启服务器进入 bios 界面，发现 1 号成员盘跟热备盘同时显示不在线，但是硬盘状态又是 0 错误，怀疑只是单纯的硬盘掉盘导致的。于是尝试重新上线下硬盘，结果一上线，就显示重建状态，不敢打断，就保存重启了下服务器。 进入服务器以后发现服务器 raid5 所在的分区无法自动挂载，于是手动挂在了下，结果满屏幕的显示 htree_dirblock_to_tree:984: inode #87556100: block 1: comm smbd: Directory block failed checksum 3: comm smbd: Directory block failed checksum [48427.551162] EXT4-fs error: 118823 callbacks suppressed [48427.551164] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551206] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551249] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551329] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551370] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551423] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551473] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551516] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551558] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48427.551602] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552207] EXT4-fs error: 117129 callbacks suppressed [48432.552221] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552254] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552297] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552381] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552425] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552467] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552540] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552581] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552625] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum [48432.552667] EXT4-fs error (device sdb1): htree_dirblock_to_tree:984: inode #87953926: block 3: comm smbd: Directory block failed checksum 类似信息。 查阅资料，猜测可能是之前阵列卡没配备电池之前，几次异常断电导致的。 我就参照教程，执行了 efsck 命令，本以为是很快就能好，结果周六下午 1 点开始修复的，一直到周日晚上 11 点还在修复，由于服务器要继续使用，就尝试中断了下 fsck ，结果有部分文件丢失，也有部分文件被还原到历史某个版本。同时有的文件夹无法访问，提示： ls: cannot access 'adas.xlsx': Structure needs cleaning 也有部分文件夹提示只读 mkdir: cannot create directory ‘1’: Read-only file system
问了以前合作过的一家数据修复公司，说没辙 这种情况怎么修复呢？？？？
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yanqiyu 2022-08-09 12:47:13 +08:00
这一堆 Directory block failed checksum 也难以定位问题，只是报错 smbd 试图访问文件夹结果因为 checksum 错误失败了。可能原因是断电导致的不一致 /盘里面的数据就是坏了（等于我没说，因为判断不出来）
如果数据极其重要，建议马上只读挂载，准备相当或更大容量硬盘，把全盘 dd 出来备份，在完完整整的运行一次 e2fsck 。（就算 e2fsck 也不能保证找回所有数据，它只是修正文件系统一致性，要是有什么 block 里面的数据已经坏了是找不回来的。但是强行读写不一致的文件系统可能扩大损坏） |
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