Date: Thu, 7 Nov 2002 00:48:36 +0100 From: Marc Olzheim <marcolz@stack.nl> To: John-David Childs <jdc@nterprise.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Formatting a large (1.3TB) SCSI disk Message-ID: <20021106234836.GA64058@stack.nl> In-Reply-To: <1036614431.17205.159.camel@lohr.digitalglobe.com> References: <7ABB1A10-ED15-11D6-BA17-00039349B214@slis.indiana.edu> <20021103110100.GC20256@cicely8.cicely.de> <1036614431.17205.159.camel@lohr.digitalglobe.com>
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[-- Attachment #1 --]
On Wed, Nov 06, 2002 at 01:27:10PM -0700, John-David Childs wrote:
> On Sun, 2002-11-03 at 04:01, Bernd Walter wrote:
> >
> > 1T disks and bigger are not supported under -stable.
>
> Perhaps that should be > 1TB disks are not supported under stable...I
> have a 1TB RAID Array (Qlogic 2200 FC Copper, Chaparrel RAID
> Controller)...although I have to admit that losing 200G of it sucks hard
>
> /dev/da0c 1011G 834G 96G 90% /ftp
>
> tunefs: soft updates: (-n) disabled
> tunefs: maximum contiguous block count: (-a) 3
> tunefs: rotational delay between contiguous blocks: (-d) 0 ms
> tunefs: maximum blocks per file in a cylinder group: (-e) 8192
> tunefs: average file size: (-f) 16384
> tunefs: average number of files in a directory: (-s) 64
> tunefs: minimum percentage of free space: (-m) 8%
> tunefs: optimization preference: (-o) time
>
> Performance also isn't up to par...I'm only able to get ~ 14MB/sec.
With some minor modifications to disklabel, you can label a 2 Tb disk.
We've done it with a 1.4Tb disk:
Filesystem Size Used Avail Capacity Mounted on
/dev/da20a 669G 246G 370G 40% /rapraid0
/dev/da20e 669G 499G 117G 81% /rapraid1
Patch attached (Don't mind the code, it's a quick hack)
Zlo
[-- Attachment #2 --]
--- /usr/src/sbin/disklabel/disklabel.c Mon Aug 26 21:43:04 2002
+++ /usr/src/sbin/disklabel/disklabel.c Wed Oct 23 11:37:25 2002
@@ -927,6 +927,32 @@
return (NULL);
}
+unsigned int
+atoui(const char *cp, char **end_p)
+{
+ unsigned int res, prev;
+
+ res = 0;
+ prev = 0;
+ while (*cp)
+ {
+ if (!isdigit(*cp))
+ {
+ if (end_p)
+ *end_p = cp;
+ return res;
+ }
+ res = (res * 10) + (*cp - '0');
+ if (res < prev)
+ return 0;
+ prev = res;
+ cp++;
+ }
+ if (end_p)
+ *end_p = cp;
+ return res;
+}
+
/*
* Read an ascii label in from fd f,
* in the same format as that put out by display(),
@@ -1074,13 +1100,14 @@
continue;
}
if (streq(cp, "sectors/unit")) {
- v = atoi(tp);
- if (v <= 0) {
+ unsigned int uv;
+ uv = atoui(tp, NULL);
+ if (uv <= 0) {
fprintf(stderr, "line %d: %s: bad %s\n",
lineno, tp, cp);
errors++;
} else
- lp->d_secperunit = v;
+ lp->d_secperunit = uv;
continue;
}
if (streq(cp, "rpm")) {
@@ -1178,7 +1205,7 @@
return (1); \
} else { \
cp = tp, tp = word(cp); \
- (n) = atoi(cp); \
+ (n) = atoui(cp, NULL); \
} \
} while (0)
@@ -1190,7 +1217,7 @@
} else { \
char *tmp; \
cp = tp, tp = word(cp); \
- (n) = strtol(cp,&tmp,10); \
+ (n) = atoui(cp,&tmp); \
if (tmp) (w) = *tmp; \
} \
} while (0)
@@ -1205,7 +1232,7 @@
struct partition *pp;
char *cp;
char **cpp;
- int v;
+ unsigned int v;
pp = &lp->d_partitions[part];
cp = NULL;
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