Can anyone help me understand this? Why is there such a huge discrepancy in the amount of drive space being used? I have about 5 million jpg images ( about 100Gig) which I am moving from a local file system to an nfs share. The files use a lot more space on the new file system then they do on the old. The both are ext3 file systems. The block sizes are the same. There are a different number of Inodes per group and inode blocks per group but I'm not sure what that means. 95440088 on the old 114727908 on the new the old is a fedora 2 box with a plain old 250gig ide drive the new is a centos 5 box with software raid 5 across 3 500 gig sata drives here are some details: Old: [user at old devmlsserver]$ du --max-depth=2 retsPhotoCache/ 229488 retsPhotoCache/2/0 553248 retsPhotoCache/2/2 279584 retsPhotoCache/2/1 1230948 retsPhotoCache/2/3 2293272 retsPhotoCache/2 144 retsPhotoCache/9/1 148 retsPhotoCache/9 113028 retsPhotoCache/1/4 74016 retsPhotoCache/1/6 131180 retsPhotoCache/1/5 26292 retsPhotoCache/1/0 109172 retsPhotoCache/1/2 100024 retsPhotoCache/1/1 100264 retsPhotoCache/1/3 653980 retsPhotoCache/1 32 retsPhotoCache/8/7 36 retsPhotoCache/8 30423608 retsPhotoCache/3/4 4432832 retsPhotoCache/3/0 11340184 retsPhotoCache/3/2 28 retsPhotoCache/3/9 5287432 retsPhotoCache/3/1 41008560 retsPhotoCache/3/3 92492648 retsPhotoCache/3 95440088 retsPhotoCache/ New: [root at new nfsshare]# du --max-depth=2 retsPhotoCache/ 184 retsPhotoCache/9/1 192 retsPhotoCache/9 56 retsPhotoCache/8/7 64 retsPhotoCache/8 147640 retsPhotoCache/1/4 171272 retsPhotoCache/1/5 130884 retsPhotoCache/1/1 34440 retsPhotoCache/1/0 129292 retsPhotoCache/1/3 140840 retsPhotoCache/1/2 94040 retsPhotoCache/1/6 848416 retsPhotoCache/1 44 retsPhotoCache/3/9 35892708 retsPhotoCache/3/4 6851728 retsPhotoCache/3/1 5830840 retsPhotoCache/3/0 48506212 retsPhotoCache/3/3 13833412 retsPhotoCache/3/2 110914952 retsPhotoCache/3 354728 retsPhotoCache/2/1 290028 retsPhotoCache/2/0 1617400 retsPhotoCache/2/3 702112 retsPhotoCache/2/2 2964276 retsPhotoCache/2 114727908 retsPhotoCache/ Can anyone help me understand this? Why is there such a huge discrepancy in the amount of drive space being used? I have about 5 million jpg images ( about 100Gig) which I am moving from a local file system to an nfs share. The files use a lot more space on the new file system then they do on the old. The both are ext3 filesystems. The block sizes are the same. There are a different number of Inodes per group and inode blocks per group but I'm not sure what that means. 95440088 on the old 114727908 on the new the old is a fedora 2 box with a plain old 250gig ide drive the new is a centos 5 box with software raid 5 across 3 500 gig sata drives here are some details: Old: [user at old devmlsserver]$ du --max-depth=2 retsPhotoCache/ 229488 retsPhotoCache/2/0 553248 retsPhotoCache/2/2 279584 retsPhotoCache/2/1 1230948 retsPhotoCache/2/3 2293272 retsPhotoCache/2 144 retsPhotoCache/9/1 148 retsPhotoCache/9 113028 retsPhotoCache/1/4 74016 retsPhotoCache/1/6 131180 retsPhotoCache/1/5 26292 retsPhotoCache/1/0 109172 retsPhotoCache/1/2 100024 retsPhotoCache/1/1 100264 retsPhotoCache/1/3 653980 retsPhotoCache/1 32 retsPhotoCache/8/7 36 retsPhotoCache/8 30423608 retsPhotoCache/3/4 4432832 retsPhotoCache/3/0 11340184 retsPhotoCache/3/2 28 retsPhotoCache/3/9 5287432 retsPhotoCache/3/1 41008560 retsPhotoCache/3/3 92492648 retsPhotoCache/3 95440088 retsPhotoCache/ New: [root at new nfsshare]# du --max-depth=2 retsPhotoCache/ 184 retsPhotoCache/9/1 192 retsPhotoCache/9 56 retsPhotoCache/8/7 64 retsPhotoCache/8 147640 retsPhotoCache/1/4 171272 retsPhotoCache/1/5 130884 retsPhotoCache/1/1 34440 retsPhotoCache/1/0 129292 retsPhotoCache/1/3 140840 retsPhotoCache/1/2 94040 retsPhotoCache/1/6 848416 retsPhotoCache/1 44 retsPhotoCache/3/9 35892708 retsPhotoCache/3/4 6851728 retsPhotoCache/3/1 5830840 retsPhotoCache/3/0 48506212 retsPhotoCache/3/3 13833412 retsPhotoCache/3/2 110914952 retsPhotoCache/3 354728 retsPhotoCache/2/1 290028 retsPhotoCache/2/0 1617400 retsPhotoCache/2/3 702112 retsPhotoCache/2/2 2964276 retsPhotoCache/2 114727908 retsPhotoCache/ here is one small dir structure for comparison Old Local FS: [user at old retsphototest]$ du /home/user/user/home/devmlsserver/retsPhotoCache/8 20 /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8/8/2 24 /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8/8 28 /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8 32 /home/user/user/home/devmlsserver/retsPhotoCache/8/7 36 /home/user/user/home/devmlsserver/retsPhotoCache/8 Old nfs shared FS: [user at old retsphototest]$ du /home/user/retsphototest/8 32 /home/user/retsphototest/8/7/8/8/2 40 /home/user/retsphototest/8/7/8/8 48 /home/user/retsphototest/8/7/8 56 /home/user/retsphototest/8/7 64 /home/user/retsphototest/8 New local FS, this is the share: [root at new retsPhotoCache]# du /var/nfsshare/retsPhotoCache/8 32 /var/nfsshare/retsPhotoCache/8/7/8/8/2 40 /var/nfsshare/retsPhotoCache/8/7/8/8 48 /var/nfsshare/retsPhotoCache/8/7/8 56 /var/nfsshare/retsPhotoCache/8/7 64 /var/nfsshare/retsPhotoCache/8 Old: [root at old ~]# dumpe2fs -h /dev/sda2 dumpe2fs 1.36 (05-Feb-2005) Filesystem volume name: /1 Last mounted on: <not available> Filesystem UUID: 924b8f6c-8f8e-4cb2-a1ef-d513b5c8a437 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file Default mount options: (none) Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 30375936 Block count: 60739756 Reserved block count: 3036987 Free blocks: 42722859 Free inodes: 28747754 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 1009 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 16384 Inode blocks per group: 512 Filesystem created: Wed Jun 15 15:47:25 2005 Last mount time: Tue Apr 10 22:31:09 2007 Last write time: Tue Apr 10 22:31:09 2007 Mount count: 19 Maximum mount count: -1 Last checked: Wed Jun 15 15:47:25 2005 Check interval: 0 (<none>) Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 128 Journal inode: 8 First orphan inode: 5062661 Default directory hash: tea Directory Hash Seed: 0ae3a9f8-13f0-40cc-9065-a27063627473 Journal backup: inode blocks New: [root at new retsPhotoCache]# dumpe2fs -h /dev/md2 dumpe2fs 1.39 (29-May-2006) Filesystem volume name: <none> Last mounted on: <not available> Filesystem UUID: 7888256b-7ba3-4b0c-9a37-76e429cdd90c Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 243138560 Block count: 243123584 Reserved block count: 12156179 Free blocks: 233894892 Free inodes: 243093025 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 966 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 32768 Inode blocks per group: 1024 Filesystem created: Tue Dec 4 19:39:22 2007 Last mount time: Fri Dec 7 22:21:45 2007 Last write time: Fri Dec 7 22:21:45 2007 Mount count: 8 Maximum mount count: -1 Last checked: Tue Dec 4 19:39:22 2007 Check interval: 0 (<none>) Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 128 Journal inode: 8 Default directory hash: tea Directory Hash Seed: 9e76f41f-4ee3-4137-ad2d-561eaca9daf7 Journal backup: inode blocks Journal size: 128M Old local: [user at old devmlsserver]$ ls -l /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8/8/2 total 16 -rw-rw-r-- 1 user user 8048 Apr 23 2007 5.0.Photo.jpg -rw-rw-r-- 1 user user 8048 Jun 28 22:50 5.1.Photo.jpg Old Share: [user at old devmlsserver]$ ls -l /home/user/retsphototest/8/7/8/8/2 total 24 -rw-rw-r-- 1 user user 8048 Apr 23 2007 5.0.Photo.jpg -rw-rw-r-- 1 user user 8048 Jun 28 22:50 5.1.Photo.jpg [user at old devmlsserver]$ md5sum /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8/8/2/5.1.Photo.jpg d238ee668828117193e037a61b62a636 /home/user/user/home/devmlsserver/retsPhotoCache/8/7/8/8/2/5.1.Photo.jpg [user at old devmlsserver]$ md5sum /home/user/retsphototest/8/7/8/8/2/5.1.Photo.jpg d238ee668828117193e037a61b62a636 /home/user/retsphototest/8/7/8/8/2/5.1.Photo.jpg -- - Tom Penney