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I'm copying files between two samba server using robocopy from a third
Windows PC and i'm experiencing disk usage that is much higher on the
destination PC.
The origin samba server is Debian Lenny with samba 3.2.5.
The destination samba server is Debian Wheezy with samba 3.6.9
The PC running robocopy is Windows Server 2003 with robocopy XP026.
I'm copying from //gam/c$ to //gam2/c$. Either source and destination
shares are mounted on /smbshare on the corresponding PCs, ext3 the
former and ext4 the latter.
From gam (the source):
--------------------------
# du -s -h /smbshare/
45G /smbshare/
# du -s -h --apparent-size /smbshare/
45G /smbshare/
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md2 129G 45G 78G 37% /smbshare
--------------------------
And now gam2 (the destination):
--------------------------
# du -s -h /smbshare/
123G /smbshare/
# du -s -h --apparent-size /smbshare/
45G /smbshare/
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 210G 123G 77G 62% /smbshare
--------------------------
Reading the destination share size with Windows, i obtain the same size
of the origin share, which is the same as reported by "du -s -h
--apparent-size" on the destination. But the real filesystem usage is
much more, as you can see.
This is the /etc/samba/smb.conf of the destination PC:
[global]
security = DOMAIN
workgroup = BERNI
log file = /var/log/samba/samba-berni.log
idmap config * : backend = rid
idmap config * : range = 1000000-1999999
invalid users = root
admin users = "+berni\domain admins"
create mask = 0664
directory mask = 0771
vfs object = acl_xattr
inherit owner = Yes
hide special files = Yes
veto files = /lost+found/
map archive = No
map readonly = No
map hidden = No
map system = No
store dos attributes = Yes
strict allocate = yes
usershare path =
restrict anonymous = 2
[c$]
path = /smbshare
read only = No
From dumpe2fs, these are the filesystem features of the destination PC:
Filesystem features: has_journal ext_attr resize_inode dir_index
filetype needs_recovery extent flex_bg
sparse_super large_file huge_file uninit_bg
dir_nlink extra_isize
Default mount options: user_xattr acl
What do you think?
Cesare.
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