linux 系统盘在线修复

Question

dmesg

系统盘没有做raid，每天都有4~5条报错，加起来共有108个扇区有问题？

[21692888.877926] blk_update_request: critical target error, dev sda, sector 1399656992
[21692891.828266] sd 0:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[21692891.828282] sd 0:0:0:0: [sda] Sense Key : Hardware Error [current]
[21692891.828291] sd 0:0:0:0: [sda] Add. Sense: No defect spare location available
[21692891.828298] sd 0:0:0:0: [sda] CDB: Read(10) 28 00 53 6d 12 20 00 00 08 00
[21692891.828305] blk_update_request: critical target error, dev sda, sector 1399656993
[21692894.761638] sd 0:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[21692894.761657] sd 0:0:0:0: [sda] Sense Key : Hardware Error [current]
[21692894.761665] sd 0:0:0:0: [sda] Add. Sense: No defect spare location available
[21692894.761672] sd 0:0:0:0: [sda] CDB: Read(10) 28 00 53 6d 12 20 00 00 08 00
[21692894.761679] blk_update_request: critical target error, dev sda, sector 1399656992

如何在线修复

1 用这个命令badblocks -s -v -o /root/badblocks.log /dev/sda可以检测坏块，但是直接对系统盘执行这个命令会不会对系统有影响，还有这个命令要执行多久？

2 如何修复这个系统盘，还是只能更换系统盘？

3 如何将系统盘迁移到另一块盘，达到更换系统盘的目的？