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Add log support to smart command

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This commit is contained in:
Andrea Mazzoleni 2015-01-23 22:43:46 +01:00
parent 6e02deb5d8
commit e0601593bd
1 changed files with 15 additions and 3 deletions
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18
cmdline/device.c
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@ -24,8 +24,8 @@
/**
* Annual Failure Rate data points from Backblaze.
*
* From:
* https://www.backblaze.com/blog-smart-stats-2014-8.html
* From: https://www.backblaze.com/blog-smart-stats-2014-8.html
* Mentioned link for future update: https://www.backblaze.com/smart
*/
struct afr_point {
uint64_t value; /**< Value of the SMART raw attribute. */
@ -143,7 +143,7 @@ static double smart_afr_value(struct afr_point* tab, uint64_t value)
* Note that this definition is different from the one given
* by Seagate, that defines AFR = 1 - exp(-8760/MTBF), that
* instead represents the probability of a failure in the next
* year, and then we call it as AFP (Annual Failure Probability).
* year.
*
* To combine the different AFR from different SMART attributes,
* we sums them as we assume that they are independent,
@ -406,6 +406,16 @@ static void state_smart(unsigned n, tommy_list* low)
printf("- (not in stats)");
printf("\n");
fprintf(stdlog, "smart:%s:%s:%s:%g\n", devinfo->file, devinfo->name, devinfo->smart_serial, afr);
for (j = 0; j < 256; ++j) {
if (devinfo->smart[j] != SMART_UNASSIGNED)
fprintf(stdlog, "attr:%s:%u:%" PRIu64 "\n", devinfo->file, j, devinfo->smart[j]);
}
if (devinfo->smart[SMART_SIZE] != SMART_UNASSIGNED)
fprintf(stdlog, "attr:%s:size:%" PRIu64 "\n", devinfo->file, devinfo->smart[SMART_SIZE]);
if (devinfo->smart[SMART_ERROR] != SMART_UNASSIGNED)
fprintf(stdlog, "attr:%s:error:%" PRIu64 "\n", devinfo->file, devinfo->smart[SMART_ERROR]);
}
printf("\n");
@ -416,6 +426,8 @@ static void state_smart(unsigned n, tommy_list* low)
*/
p_at_least_one_failure = poisson_prob_n_or_more_failures(array_failure_rate, 1);
fprintf(stdlog, "summary:array_failure:%g:%g\n", array_failure_rate, p_at_least_one_failure);
/* |<##################################################################72>|####80>| */
printf("The FP column is the probability (in percentage) that the disk is going\n");
printf("to fail in the next year.\n");