Eric D. Mudama wrote:
Actually, it's possibly worse, since each failure in libata will generate 3-4 retries. With existing ATA error recovery in the drives, that's about 3 seconds per retry on average, or 12 seconds per failure. Multiply that by the number of blocks past the error to complete the request..
It really beats the alternative of a forced reboot due to, say, superblock I/O failing because it happened to get merged with an unrelated I/O which then failed.. Etc.. Definitely an improvement. The number of retries is an entirely separate issue. If we really care about it, then we should fix SD_MAX_RETRIES. The current value of 5 is *way* too high. It should be zero or one. Cheers - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
