Linux System Admins Blog

While running rsync backups to a USB external disk I noticed an issue where the backup job would stop and /var/log/messages would spit out errors like:
Buffer I/O error on device sdb1, logical block 102630553
scsi 3:0:0:0: rejecting I/O to dead device
sd 6:0:0:0: Device not ready: <6>: Current: sense key: Not Ready
Add. Sense: Logical unit not ready, [...]

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