I'm working on a 2TB array RAID5 setup (and very slowly making progress I
might add with all the oopses and SCSI errors). At least I solved this
small problem though.
Using Linux-2.4.19-pre2-ac3 and mdadm-0.7
mdadm --detail gives a bogus "Array Size". Also, the "human_size" value is
calculated wrong since both "Array Size" and "Device Size" are in 1024 byte
units already and not 1000 byte units.
/dev/md6:
Version : 00.90.00
Creation Time : Sun Mar 10 05:19:28 2002
Raid Level : raid5
Array Size : -197258624
Device Size : 177293184 (169 GiB)
Raid Disks : 12
Total Disks : 13
Preferred Minor : 6
Persistance : Superblock is persistant
I changed Detail.c to use BLKGETSIZE64 but noticed that this returns a much
larger number due to this line in md.c:
case BLKGETSIZE64: /* Return device size */
err = md_put_user((u64)md_hd_struct[minor].nr_sects
<< 9,
(u64 *) arg);
Why are we multiplying by 512??? Seems unnecessary to me.
Anyway -- the following mods (also attached) are necessary for mdadm to
print out the correct answer (and it prints out correctly for all of my RAID
sets):
/dev/md6:
Version : 00.90.00
Creation Time : Sun Mar 10 05:19:28 2002
Raid Level : raid5
Array Size : 1950225024 (1904 GiB)
Device Size : 177293184 (173 GiB)
Raid Disks : 12
Total Disks : 13
Preferred Minor : 6
Persistance : Superblock is persistant
*** ../mdadm-0.7.old/mdadm.h Thu Mar 7 18:59:25 2002
--- mdadm.h Sun Mar 10 06:23:31 2002
***************
*** 149,152 ****
extern mddev_ident_t conf_get_ident(char *, char*);
extern mddev_dev_t conf_get_devs(char *);
! extern char *human_size(long kbytes);
--- 149,152 ----
extern mddev_ident_t conf_get_ident(char *, char*);
extern mddev_dev_t conf_get_devs(char *);
! extern char *human_size(long long kbytes);
*** ../mdadm-0.7.old/Detail.c Thu Mar 7 18:59:29 2002
--- Detail.c Sun Mar 10 07:13:30 2002
***************
*** 81,90 ****
if (brief)
printf("ARRAY %s level=%s disks=%d", dev,
c?c:"-unknown-",array.raid_disks );
else {
! int array_size;
! if (ioctl(fd, BLKGETSIZE, &array_size))
array_size = 0;
! else array_size>>= 1;
printf("%s:\n", dev);
printf(" Version : %02d.%02d.%02d\n",
array.major_version, array.minor_version, array.patch_version);
--- 81,91 ----
if (brief)
printf("ARRAY %s level=%s disks=%d", dev,
c?c:"-unknown-",array.raid_disks );
else {
! typedef unsigned long long u64;
! u64 array_size;
! if (ioctl(fd, BLKGETSIZE64, &array_size))
array_size = 0;
! else array_size >>= 10;
printf("%s:\n", dev);
printf(" Version : %02d.%02d.%02d\n",
array.major_version, array.minor_version, array.patch_version);
***************
*** 92,100 ****
printf(" Creation Time : %.24s\n", ctime(&atime));
printf(" Raid Level : %s\n", c?c:"-unknown-");
if (array_size)
! printf(" Array Size : %d%s\n", array_size, human_size(array_size));
if (array.level >= 1)
! printf(" Device Size : %d%s\n", array.size, human_size(array.size));
printf(" Raid Disks : %d\n", array.raid_disks);
printf(" Total Disks : %d\n", array.nr_disks);
printf("Preferred Minor : %d\n", array.md_minor);
--- 93,101 ----
printf(" Creation Time : %.24s\n", ctime(&atime));
printf(" Raid Level : %s\n", c?c:"-unknown-");
if (array_size)
! printf(" Array Size : %llu%s\n", array_size,
human_size(array_size*1024/1000));
if (array.level >= 1)
! printf(" Device Size : %d%s\n", array.size,
human_size((u64)array.size*1024/1000));
printf(" Raid Disks : %d\n", array.raid_disks);
printf(" Total Disks : %d\n", array.nr_disks);
printf("Preferred Minor : %d\n", array.md_minor);
*** ../mdadm-0.7.old/util.c Thu Mar 7 18:57:37 2002
--- util.c Sun Mar 10 06:23:47 2002
***************
*** 425,431 ****
return csum;
}
! char *human_size(long kbytes)
{
static char buf[30];
--- 425,431 ----
return csum;
}
! char *human_size(long long kbytes)
{
static char buf[30];
________________________________________
Michael D. Black Principal Engineer
mblack@csihq.com 321-676-2923,x203
http://www.csihq.com Computer Science Innovations
http://www.csihq.com/~mike My home page
FAX 321-676-2355
*** ../mdadm-0.7.old/mdadm.h Thu Mar 7 18:59:25 2002
--- mdadm.h Sun Mar 10 06:23:31 2002
***************
*** 149,152 ****
extern mddev_ident_t conf_get_ident(char *, char*);
extern mddev_dev_t conf_get_devs(char *);
! extern char *human_size(long kbytes);
--- 149,152 ----
extern mddev_ident_t conf_get_ident(char *, char*);
extern mddev_dev_t conf_get_devs(char *);
! extern char *human_size(long long kbytes);
*** ../mdadm-0.7.old/Detail.c Thu Mar 7 18:59:29 2002
--- Detail.c Sun Mar 10 07:13:30 2002
***************
*** 81,90 ****
if (brief)
printf("ARRAY %s level=%s disks=%d", dev, c?c:"-unknown-",array.raid_disks );
else {
! int array_size;
! if (ioctl(fd, BLKGETSIZE, &array_size))
array_size = 0;
! else array_size>>= 1;
printf("%s:\n", dev);
printf(" Version : %02d.%02d.%02d\n",
array.major_version, array.minor_version, array.patch_version);
--- 81,91 ----
if (brief)
printf("ARRAY %s level=%s disks=%d", dev, c?c:"-unknown-",array.raid_disks );
else {
! typedef unsigned long long u64;
! u64 array_size;
! if (ioctl(fd, BLKGETSIZE64, &array_size))
array_size = 0;
! else array_size >>= 10;
printf("%s:\n", dev);
printf(" Version : %02d.%02d.%02d\n",
array.major_version, array.minor_version, array.patch_version);
***************
*** 92,100 ****
printf(" Creation Time : %.24s\n", ctime(&atime));
printf(" Raid Level : %s\n", c?c:"-unknown-");
if (array_size)
! printf(" Array Size : %d%s\n", array_size, human_size(array_size));
if (array.level >= 1)
! printf(" Device Size : %d%s\n", array.size, human_size(array.size));
printf(" Raid Disks : %d\n", array.raid_disks);
printf(" Total Disks : %d\n", array.nr_disks);
printf("Preferred Minor : %d\n", array.md_minor);
--- 93,101 ----
printf(" Creation Time : %.24s\n", ctime(&atime));
printf(" Raid Level : %s\n", c?c:"-unknown-");
if (array_size)
! printf(" Array Size : %llu%s\n", array_size, human_size(array_size*1024/1000));
if (array.level >= 1)
! printf(" Device Size : %d%s\n", array.size, human_size((u64)array.size*1024/1000));
printf(" Raid Disks : %d\n", array.raid_disks);
printf(" Total Disks : %d\n", array.nr_disks);
printf("Preferred Minor : %d\n", array.md_minor);
*** ../mdadm-0.7.old/util.c Thu Mar 7 18:57:37 2002
--- util.c Sun Mar 10 06:23:47 2002
***************
*** 425,431 ****
return csum;
}
! char *human_size(long kbytes)
{
static char buf[30];
--- 425,431 ----
return csum;
}
! char *human_size(long long kbytes)
{
static char buf[30];
