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This commit is contained in:
Andrea Mazzoleni 2026-04-27 15:43:06 +02:00
parent cfd1eac70c
commit cebc9b62f2
22 changed files with 1044 additions and 603 deletions
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30
cmdline/device.c
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@ -413,8 +413,10 @@ static double smart_afr(devinfo_t* devinfo)
}
if (smart[187].raw != SMART_UNASSIGNED) {
/* with some disks, only the lower 16 bits are significant */
/* See: http://web.archive.org/web/20130507072056/http://media.kingston.com/support/downloads/MKP_306_SMART_attribute.pdf */
/*
* With some disks, only the lower 16 bits are significant
* See: http://web.archive.org/web/20130507072056/http://media.kingston.com/support/downloads/MKP_306_SMART_attribute.pdf
*/
double r = smart_afr_value(SMART_187_R, SMART_187_STEP, smart[187].raw & mask16);
if (afr < r)
afr = r;
@ -430,8 +432,10 @@ static double smart_afr(devinfo_t* devinfo)
*/
strncmp(devinfo->model, "ST", 2) != 0 && smart[188].raw != SMART_UNASSIGNED
) {
/* with Seagate disks, there are three different 16 bits value reported */
/* the lowest one is the most significant */
/*
* With Seagate disks, there are three different 16 bits value reported
* the lowest one is the most significant
*/
double r = smart_afr_value(SMART_188_R, SMART_188_STEP, smart[188].raw & mask16);
if (afr < r)
afr = r;
@ -488,12 +492,16 @@ static double raid_prob_of_one_or_more_failures(double array_failure_rate, doubl
if (array_failure_rate == 0)
return 0;
/* get the Mean Time Between Failure of a single disk */
/* from the array failure rate */
/*
* Get the Mean Time Between Failure of a single disk
* from the array failure rate
*/
MTBF = n / array_failure_rate;
/* get the Mean Time Between Repair (the time that a failed disk is replaced) */
/* from the repair rate */
/*
* Get the Mean Time Between Repair (the time that a failed disk is replaced)
* from the repair rate
*/
MTTR = 1.0 / replace_rate;
/* use the approximated MTTDL equation */
@ -697,8 +705,10 @@ static void state_smart(struct snapraid_state* state, unsigned n, tommy_list* lo
if (flag & (SMARTCTL_FLAG_FAIL | SMARTCTL_FLAG_PREFAIL))
make_it_fail = 1;
/* note that in older smartmontools, like 5.x, rotation rate is not present */
/* and then it could remain unassigned */
/*
* Note that in older smartmontools, like 5.x, rotation rate is not present
* and then it could remain unassigned
*/
if (flag & (SMARTCTL_FLAG_UNSUPPORTED | SMARTCTL_FLAG_OPEN)) {
/* if error running smartctl, skip AFR estimation */