[Resent without html] Dear colleagues, The attached patch keeps a count of block device I/O errors -- any error event that generates a klog message in blk_update_request -- and reports the count as a 12th field in /sys/block/<dev>/stat. That allows, e.g., monitoring systems to detect and count block device errors without having to scrape syslog. If the patch is acceptable as is, please consider it submitted for eventual merging into the mainline kernel. If not, I'd welcome comments, feedback, etc. Thanks, Jim Shankland
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blockdev-error-counts.patch
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