Here is something I can't put my hands around to well and I don't really
understand why that is, other then may be the fize of each mount point
not process properly on AMD64, but that's just an idea. See lower below
for why I think it might be the case. In any case, I would welcome a
logical explication why that might be however.
I mirror a mount point for three servers, one AMD64 and two i386. Then I
do df -h for each one, but I get way different results when I do it on
AMD64, or when I do it on i386, but I can't understand why.
When I do the df -i however, I do get the same amount of inode, so there
is the same amount of files. I even use rsync to make a perfect mirror
of them and still I get way different results.
AMD64 give me 4.6GB as the i386 gives me 8.1GB. The funny part is that
the AMD64 should give me more as the file system include a bit more stuff
AMD64 mount point file system is for /var/www as the mirror one is for
/var/www/sites and the amd does include all of sites files.
However is I log in with WinSCP and do the calculate stuff on both
server to the location
/var/www/sites, I do get the same results.
dev.....
52584 files, 2799 folders
location /var/www
7,685 MB (8,059,054,473)
www2....
52584 files, 2799 folders
location /var/www
7,683 MB (8,056,394,923)
The difference in size is the logs files that are process not in sync of
each others, but locally on each one.
I can't explain this one.
This is really weird.
I thought to delete the file system and recreate it with the additional
mount to to see, but the results should be good as it is now as the
/var/www/sites is inside the /var/www one on the AMD64.
i386 display:
# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/wd0a 247M 27.8M 206M 12% /
/dev/wd0h 4.6G 3.2M 4.3G 0% /home
/dev/wd0d 495M 1.0K 470M 0% /tmp
/dev/wd0g 4.4G 206M 3.9G 5% /usr
/dev/wd0e 12.6G 745M 11.2G 6% /var
/dev/wd1b 7.8G 2.0K 7.4G 0% /var/mysql
/dev/wd0f 991M 1.1M 940M 0% /var/qmail
/dev/wd1a 19.7G 8.1G 10.6G 43% /var/www/sites
AMD64 display:
www1# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/wd0a 251M 40.5M 198M 17% /
/dev/wd0h 1024M 54.0K 972M 0% /home
/dev/wd0d 1006M 2.0K 956M 0% /tmp
/dev/wd0g 4.9G 304M 4.4G 6% /usr
/dev/wd0e 24.6G 4.6G 18.7G 20% /var
/dev/wd0f 1006M 1.5M 955M 0% /var/qmail
I also thought about files still open, but I rebooted the system to be
safe and still the same results.
May be the disklabel is not seen right, or calculate right on AMD64. I
am not sure I understand this right, but if the file system use fsize of
2048 on AMD64 and display almost 1/2 the size of the i386 that use
fsize of 1024, may be that's just the part of the fsize that is missing
in the calculation.
So, far I couldn't come up with a different explication.
www1# disklabel wd0
# Inside MBR partition 3: type A6 start 63 size 78156162
# /dev/rwd0c:
type: ESDI
disk: ESDI/IDE disk
label: Maxtor 6E040L0
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 16383
total sectors: 78165360
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # microseconds
track-to-track seek: 0 # microseconds
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
a: 524097 63 4.2BSD 2048 16384 328 # Cyl
0*- 519
b: 8388576 524160 swap # Cyl 520
- 8841
c: 78165360 0 unused 0 0 # Cyl 0
- 77544
d: 2097648 8912736 4.2BSD 2048 16384 328 # Cyl 8842
- 10922
e: 52429104 11010384 4.2BSD 2048 16384 328 # Cyl 10923
- 62935
f: 2097648 63439488 4.2BSD 2048 16384 328 # Cyl 62936
- 65016
g: 10486224 65537136 4.2BSD 2048 16384 328 # Cyl 65017
- 75419
h: 2132865 76023360 4.2BSD 2048 16384 328 # Cyl 75420
- 77535*
oppose to i386:
# disklabel wd0
# Inside MBR partition 3: type A6 start 63 size 58621122
# /dev/rwd0c:
type: ESDI
disk: ESDI/IDE disk
label: QUANTUM FIREBALL
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 16383
total sectors: 58633344
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # microseconds
track-to-track seek: 0 # microseconds
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
a: 524097 63 4.2BSD 1024 8192 86 # Cyl
0*- 519
b: 8388576 524160 swap # Cyl 520
- 8841
c: 58633344 0 unused 0 0 # Cyl 0
- 58167
d: 1048320 8912736 4.2BSD 1024 8192 86 # Cyl 8842
- 9881
e: 27263376 9961056 4.2BSD 1024 8192 86 # Cyl 9882
- 36928
f: 2097648 37224432 4.2BSD 1024 8192 86 # Cyl 36929
- 39009
g: 9436896 39322080 4.2BSD 1024 8192 86 # Cyl 39010
- 48371
h: 9874368 48758976 4.2BSD 1024 8192 86 # Cyl 48372
- 58167
