以下是dmesg的摘录：
Info fld=0x17
end_request: I/O error,dev sde,sector 34412208504
sd 7:0:0:0: SCSI error: return code = 0x08000002
sde: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 35840057200
sd 7:0:0:0: SCSI error: return code = 0x08000002
sde: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 35799212408
sd 7:0:0:0: SCSI error: return code = 0x08000002
sde: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 39444095352
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,dev sdf,sector 32974487928
device-mapper: multipath: Failing path 8:80.
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 32973734264
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 22213009752
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 32940065144
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 32974552944
sd 7:0:0:1: SCSI error: return code = 0x08000002
sdf: Current: sense key: Aborted Command
<<vendor>> ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
Info fld=0x17
end_request: I/O error,sector 17956282744
Buffer I/O error on device dm-3,logical block 9666270717
lost page write due to I/O error on dm-3
I/O error in filesystem ("dm-3") Meta-data dev dm-3 block 0xe7ffb01c2 ("xlog_iodone") error 5 buf count 12800
Buffer I/O error on device dm-3,logical block 4028959741
lost page write due to I/O error on dm-3
xfs_force_shutdown(dm-3,0x2) called from line 956 of file fs/xfs/xfs_log.c. Return address = 0xffffffff883bec58
Filesystem "dm-3": Log I/O Error Detected. Shutting down filesystem: dm-3
Please umount the filesystem,and rectify the problem(s)
我怎么调试这个？
谢谢.
解决方法
OP报告的错误消息本身与XFS无关,而是驱动器/电缆坏的结果.检查错误条目：
end_request: I/O error,sector 39444095352
系统无法在LBA地址39444095352处检索位于sde上的数据.这通常意味着磁盘上存在坏块.
sd 7:0:0:1: SCSI error: return code = 0x
end_request: I/O error,sector 39444095352
002
sdf: Current: sense key: Aborted Command
vendor ASC=0xc0 ASCQ=0x23ASC=0xc0 ASCQ=0x23
SCSI命令由于超时(由坏块引起)而中止,并且磁盘返回特定的供应商代码,更详细地解释错误.
发出smartctl –all显示各种内部磁盘计数器.具有ID 5(Reallocated_Sector_Ct),197(Current_Pending_Sector)和198(Offline_Uncorrectable)的属性是特别感兴趣的,因为它们显示磁盘块不可读/重新映射的情况.
在这种情况下你能做什么？最安全且最受欢迎的方法是将整个可读内容备份到另一个安全磁盘(可能使用弹性磁盘错误的东西,如ddrescue)
如果不可能采用这种方法,那么仍有两种可能性：
>使用实时发行版重新启动并发出坏块-n< dev> (here for man page)：它将启动非破坏性读/写测试,该测试应触发磁盘坏块重新映射过程
>手动覆盖受影响的坏块,发出与dd类似的东西= = dev / zero of = / dev / sde bs = 512 count = 1 seek = 39444095352
请注意,上述两种方法(尤其是第二种方法)将导致数据丢失,因为受影响的不可读扇区将被覆盖.
恢复/覆盖完成后,您应该运行完整的文件系统检查,在这种情况下发出xfs_repair / dev / sde
