Package: util-linux
Version: 2.12p-4
We tried to partition a big USB drive with sfdisk. But sfdisk refused
to partition it. The drive has 1.2TB capacity. It has over 2^31
sector counts.
# cat /proc/scsi/scsi
Attached devices:
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: I-O DATA Model: HDZ-UE1.2TS Rev: 5601
Type: Direct-Access ANSI SCSI revision: 02
# echo 0,,b | sfdisk /dev/sdb
Checking that no-one is using this disk right now ...
OK
Disk /dev/sdb: 145935 cylinders, 255 heads, 63 sectors/track
Old situation:
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 145934 145935- 1172222887 83 Linux
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
no room for partition descriptor
sfdisk: bad input
So I made a patch as follows:
--- util-linux-2.12.orig/fdisk/sfdisk.c
+++ util-linux-2.12/fdisk/sfdisk.c
@@ -1869,6 +1888,7 @@
else
delta = 0;
if (delta < 0) {
+#if 0 /*@@@@@*/
p->start -= delta;
p->size += delta;
if (is_extended(p->p.sys_type) && boxes == ONESECTOR)
@@ -1877,6 +1897,17 @@
warn(_("no room for partition descriptor\n"));
return 0;
}
+#else
+ unsigned long old_size = p->size;
+ p->start -= delta;
+ p->size += delta;
+ if (is_extended(p->p.sys_type) && boxes == ONESECTOR)
+ p->size = inc;
+ else if ( old_size <= -delta ) {
+ warn(_("no room for partition descriptor\n"));
+ return 0;
+ }
+#endif
}
base = (!ep ? 0
: (is_extended(p->p.sys_type) ?
Here is the screenshot of pathed version of sfdisk.
# echo 0,,b | ./sfdisk /dev/s
db
Checking that no-one is using this disk right now ...
OK
Disk /dev/sdb: 145935 cylinders, 255 heads, 63 sectors/track
Old situation:
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 145934 145935- 1172222887 83 Linux
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
New situation:
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 145934 145935- 1172222887 b W95 FAT32
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
Warning: no primary partition is marked bootable (active)
This does not matter for LILO, but the DOS MBR will not boot this disk.
Successfully wrote the new partition table
Re-reading the partition table ...
If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1
(See fdisk(8).)
#
The environment is:
CPU: IOP80219 (Xscale)
Distro: Debian 3.1 (sarge)
Kernel: Linux 2.6.10-iop1
( 2.6.10 + intel patch )
libc: 2.3.2.ds1-22
This is ARM machine, but this bug affects most of 32bit architectures,
I think...
Thanks.
--
_._. __._ _ . ... _ .___ ._. _____ _... ._ _._ _.._. .____ _ . ... _
Kunihiko IMAI
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