ref: c6ca07ad4e2124c2e072ad63b54da494ac799312
parent: 9e8a7578f063f4caa5ceae9b997ff72a88dbaa58
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sat Jun 3 18:16:10 EDT 2023
sdnvme: add smart file for full smart info 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.
--- a/rc/bin/inst/mountdist
+++ b/rc/bin/inst/mountdist
@@ -73,7 +73,7 @@
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}--- a/sys/src/9/boot/local.rc
+++ b/sys/src/9/boot/local.rc
@@ -22,7 +22,7 @@
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
--- a/sys/src/9/port/sdnvme.c
+++ b/sys/src/9/port/sdnvme.c
@@ -294,11 +294,106 @@
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 @@
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 @@
{Ctlr *ctlr;
char *e, *s;
- u8int *data;
- u32int *q;
- u64int n;
- WS ws;
if((ctlr = u->dev->ctlr) == nil || ctlr->ident == nil)
return 0;
@@ -363,37 +449,6 @@
p = seprint(p, e, "serial\t%.20s\n", (char*)ctlr->ident+4);
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;
}
--
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