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sdnvme: add smart file for full smart info

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Instead of cramming everything to the ctl file,
provide a separate file with the SMART/health information
using the format that matches the NVMe specification closely.

Also, the command to read the health information log page
can be namespace specific as indicated by bit 0 of LPA in
controller identification information.
This commit is contained in:
cinap_lenrek 2023-06-03 22:16:10 +00:00
parent 9e8a7578f0
commit c6ca07ad4e
3 changed files with 99 additions and 44 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
rc/bin/inst/mountdist
View file

@ -73,7 +73,7 @@ case go
echo Please wait... Scanning storage devices...
parts=`{ls /dev/sd*/* /srv/sd*/*.iso >[2]/dev/null |
grep -v '/(plan9.*|nvram|ctl|log|raw)$'}
grep -v '/(plan9.*|nvram|ctl|log|led|raw|smart)$'}
for (i in $parts) {
echo -n ' '^$i
t=`{fstype $i}

2
sys/src/9/boot/local.rc
View file

@ -22,7 +22,7 @@ fn showlocaldevs{
for(i in `{ls -p $d}){
p=$d/$i
switch($i){
case ctl raw log led
case ctl raw log led smart
;
case plan9 nvram swap
echo $p

139
sys/src/9/port/sdnvme.c
View file

@ -294,11 +294,106 @@ nvmerio(SDreq *r)
return r->status = SDok;
}
static u64int
get64(uchar *p)
{
return p[0] | p[1]<<8 | p[2]<<16 | p[3]<<24
| (u64int)p[4]<<32
| (u64int)p[5]<<40
| (u64int)p[6]<<48
| (u64int)p[7]<<56;
}
static long
readsmart(SDunit *u, Chan *, void *a, long n, vlong off)
{
Ctlr *ctlr = u->dev->ctlr;
char *buf, *p, *e;
uchar *info;
u32int nsid, *q;
WS ws;
buf = smalloc(READSTR);
if(waserror()){
free(buf);
nexterror();
}
p = buf;
e = buf + READSTR;
info = mallocalign(0x1000, ctlr->mps, 0, 0);
if(info == nil)
error(Enomem);
if(waserror()){
free(info);
nexterror();
}
/*
* Log Page Attributes (LPA) Bit0: If set to '1' then te controller
* supports SMART / Health information log page on a per namespace basis.
*/
nsid = (ctlr->ident[261] & 1) != 0 ? ctlr->nsid[u->subno] : 0xffffffff;
q = qcmd(&ws, ctlr, 1, 0x02, nsid, info, 0x1000);
q[10] = (512/4)<<16 | 0x2;
q[11] = 0;
q[12] = 0;
q[13] = 0;
q[14] = 0;
checkstatus(wcmd(&ws, q), "read SMART/health info");
dmaflush(0, info, 0x1000);
p = seprint(p, e, "Critical Warning:\t");
if(info[0]&(1<<0))
p = seprint(p, e, "Available Spare,");
if(info[0]&(1<<1))
p = seprint(p, e, "Temperature Exceeded,");
if(info[0]&(1<<2))
p = seprint(p, e, "Reliability Degraded,");
if(info[0]&(1<<3))
p = seprint(p, e, "Read only mode,");
if(info[0]&(1<<4))
p = seprint(p, e, "Backup failed,");
p[-1] = '\n';
p = seprint(p, e, "Temperature:\t%d\n", (info[2]<<8 | info[1]) - 273);
p = seprint(p, e, "Available Spare:\t%d%%\n", info[3]);
p = seprint(p, e, "Available Spare Threshold:\t%d%%\n", info[4]);
p = seprint(p, e, "Percentage Used:\t%d%%\n", info[5]);
p = seprint(p, e, "Data Units Read:\t%llud\n", get64(info+32));
p = seprint(p, e, "Data Units Written:\t%llud\n", get64(info+48));
p = seprint(p, e, "Host Read Commands:\t%llud\n", get64(info+64));
p = seprint(p, e, "Host Write Commands:\t%llud\n", get64(info+80));
p = seprint(p, e, "Controller Busy Time:\t%llud:%.2d\n", get64(info+96)/60, (int)(get64(info+96)%60));
p = seprint(p, e, "Power Cycles:\t%llud\n", get64(info+112));
p = seprint(p, e, "Power On Hours:\t%llud\n", get64(info+128));
p = seprint(p, e, "Unsafe Shutdowns:\t%llud\n", get64(info+144));
p = seprint(p, e, "Media Errors:\t%llud\n", get64(info+160));
USED(p);
free(info);
poperror();
n = readstr(off, a, n, buf);
free(buf);
poperror();
return n;
}
static int
nvmeverify(SDunit *u)
{
Ctlr *ctlr = u->dev->ctlr;
return u->subno < ctlr->nnsid;
if(u->subno >= ctlr->nnsid)
return 0;
sdaddfile(u, "smart", 0440, eve, readsmart, nil);
return 1;
}
static int
@ -323,12 +418,7 @@ nvmeonline(SDunit *u)
return 0;
}
dmaflush(0, info, 0x1000);
p = info;
u->sectors = p[0] | p[1]<<8 | p[2]<<16 | p[3]<<24
| (u64int)p[4]<<32
| (u64int)p[5]<<40
| (u64int)p[6]<<48
| (u64int)p[7]<<56;
u->sectors = get64(info);
p = &info[128 + 4*(info[26]&15)];
lbaf = p[0] | p[1]<<8 | p[2]<<16 | p[3]<<24;
u->secsize = 1<<((lbaf>>16)&0xFF);
@ -348,10 +438,6 @@ nvmerctl(SDunit *u, char *p, int l)
{
Ctlr *ctlr;
char *e, *s;
u8int *data;
u32int *q;
u64int n;
WS ws;
if((ctlr = u->dev->ctlr) == nil || ctlr->ident == nil)
return 0;
@ -364,37 +450,6 @@ nvmerctl(SDunit *u, char *p, int l)
p = seprint(p, e, "firm\t%.8s\n", (char*)ctlr->ident+64);
p = seprint(p, e, "geometry %llud %lud\n", u->sectors, u->secsize);
/* SMART/health */
if((data = mallocalign(0x1000, ctlr->mps, 0, 0)) != nil){
q = qcmd(&ws, ctlr, 1, 0x02, 0xffffffff, data, 0x1000);
q[10] = (512/4)<<16 | 0x2;
q[11] = 0;
q[12] = 0;
q[13] = 0;
q[14] = 0;
if(wcmd(&ws, q) == 0){
dmaflush(0, data, 0x1000);
p = seprint(p, e, "temperature\t%d\n", (data[2]<<8 | data[1]) - 273);
p = seprint(p, e, "spare\t%d%%\n", data[3]);
p = seprint(p, e, "used\t%d%%\n", data[5]);
/* 16 bytes long, ignore the upper half */
n = data[144]<<0 | data[145]<<8 | data[146]<<16 | data[147]<<24
| (u64int)data[148]<<32
| (u64int)data[149]<<40
| (u64int)data[150]<<48
| (u64int)data[151]<<56;
p = seprint(p, e, "unsafe shutdowns\t%llud\n", n);
/* 16 bytes long, ignore the upper half */
n = data[160]<<0 | data[161]<<8 | data[162]<<16 | data[163]<<24
| (u64int)data[164]<<32
| (u64int)data[165]<<40
| (u64int)data[166]<<48
| (u64int)data[167]<<56;
p = seprint(p, e, "integrity errors\t%llud\n", n);
}
free(data);
}
return p-s;
}