Have you MD5SUM'd the file on both sides? If it is the same, then you have no problems. % md5sum filename On each side, compare output. Justin. On Wed, 6 Dec 2006, dushy wrote: > Hey, > > I have two identical machines setup with a RAID 5 array. One of them is used for > failovers and data from the master is synced everyday using rsync to the > failover machine. The data on this disks are usually intranet KB's, DB's etc.. > > The RAID 5 arrays are formatted using the default options i,e mkfs.ext3 > /dev/Xda. The RAID controller is 3ware escalade and each disk member in the RAID > 5 array are 400Gb IDE. > > Now the wierd part is, after syncing the failover with the master and comparing > the size of each dir and file I find some files where the size mismatches.. > > [root@storage-master repositories]# du --si > "/store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt" > 8.2k /store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt > > root@storage-slave compare]# du --si > "/store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt" > 4.1k /store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt > > stat on the same file shows.. > > [root@storage-master repositories]# stat > "/store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt" > File: `/store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt' > Size: 1126 Blocks: 16 IO Block: 4096 regular file > Device: 801h/2049d Inode: 10403842 Links: 1 > Access: (0775/-rwxrwxr-x) Uid: ( 48/ apache) Gid: ( 48/ apache) > Access: 2006-09-11 12:22:24.000000000 +0530 > Modify: 2004-09-23 16:45:31.000000000 +0530 > Change: 2006-02-23 18:31:42.000000000 +0530 > > root@storage-slave compare]# stat "/store1/SystemAdministration-OldVideos/SysAd > Training/Technology Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt" > File: `/store1/SystemAdministration-OldVideos/SysAd Training/Technology > Basics/000_READ_ME_FIRST_FOR_INDEX_OF_VIDEOS.txt' > Size: 1126 Blocks: 8 IO Block: 4096 regular file > Device: 801h/2049d Inode: 23019536 Links: 1 > Access: (0775/-rwxrwxr-x) Uid: ( 48/ apache) Gid: ( 48/ apache) > Access: 2001-01-28 21:10:14.000000000 +0530 > Modify: 2004-09-23 16:45:31.000000000 +0530 > Change: 2001-01-28 21:10:14.000000000 +0530 > > The number of blocks allocated on the master seems to be 16 and the failover is > 8. Is this the reason for the file size difference even though the content is > the same ? > > I rsynced the same file from the master to a different server and the file size > matched. Any reason why the no. of blocks allocated is different across both > this machines ? > > The file i gave above is just a example and there are many more files like this. > Also only 10% of the files have different sizes. I.e out of 263032 > files/folders only 17655 have the above problem. > > Below is the ext3 filesystem info on both the master and failover. > > [root@storage-master repositories]# dumpe2fs -h /dev/sda1 > dumpe2fs 1.35 (28-Feb-2004) > Filesystem volume name: /store1 > Last mounted on: <not available> > Filesystem UUID: 2368a03d-f21f-4c5e-b12a-cbd2c726237c > Filesystem magic number: 0xEF53 > Filesystem revision #: 1 (dynamic) > Filesystem features: has_journal ext_attr resize_inode filetype > needs_recovery sparse_super large_file > Default mount options: (none) > Filesystem state: clean > Errors behavior: Continue > Filesystem OS type: Linux > Inode count: 97681408 > Block count: 195354408 > Reserved block count: 9767720 > Free blocks: 22200635 > Free inodes: 97329015 > First block: 0 > Block size: 4096 > Fragment size: 4096 > Reserved GDT blocks: 1024 > Blocks per group: 32768 > Fragments per group: 32768 > Inodes per group: 16384 > Inode blocks per group: 512 > Filesystem created: Tue Jun 28 17:06:41 2005 > Last mount time: Tue Oct 10 20:22:02 2006 > Last write time: Tue Oct 10 20:22:02 2006 > Mount count: 93 > Maximum mount count: -1 > Last checked: Thu Oct 20 19:03:56 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: 52691033 > Default directory hash: tea > Directory Hash Seed: 0449f257-e47d-4faf-92fa-fa497efab3a1 > Journal backup: inode blocks > > [root@storage-slave compare]# dumpe2fs -h /dev/sda1 > dumpe2fs 1.35 (28-Feb-2004) > Filesystem volume name: <none> > Last mounted on: <not available> > Filesystem UUID: b003440d-d153-4cec-a668-94f5482d54cf > Filesystem magic number: 0xEF53 > Filesystem revision #: 1 (dynamic) > Filesystem features: has_journal ext_attr resize_inode filetype > needs_recovery sparse_super large_file > Default mount options: (none) > Filesystem state: clean > Errors behavior: Continue > Filesystem OS type: Linux > Inode count: 97681408 > Block count: 195354408 > Reserved block count: 9767720 > Free blocks: 26532722 > Free inodes: 97327187 > First block: 0 > Block size: 4096 > Fragment size: 4096 > Reserved GDT blocks: 1024 > Blocks per group: 32768 > Fragments per group: 32768 > Inodes per group: 16384 > Inode blocks per group: 512 > Filesystem created: Tue Jun 28 14:37:12 2005 > Last mount time: Thu Nov 16 01:11:30 2006 > Last write time: Thu Nov 16 01:11:30 2006 > Mount count: 65 > Maximum mount count: -1 > Last checked: Thu Oct 6 15:11:41 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 > Default directory hash: tea > Directory Hash Seed: fa6b4317-d51d-4050-b0f3-c72b45148777 > Journal backup: inode blocks > > tia > dushy > > > > > > _______________________________________________ > Ext3-users mailing list > Ext3-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ext3-users > _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
