Time Machine error with a Lacie USB HD

Question

Since last march I have had great success with Time machine. It wasn't till mid-November that things went wrong. This is the error I now recieve,
"Unable to complete backup. An error occurred while copying files to the backup volume."
I called apple and they were unable to solve it over the phone. They sent me a script to get my system spec's and attempt to solve issue at a later date and get back to me. That was 4 plus weeks ago. I am now trying again to solve this myself.
I prefer not to loss my old back-ups, but I feel I may have no choice.
Any idea's?

Answer 1

Hi:
The same problem. The log console shows I/O errors ONLY in something archives of another user. Removed files but after shows another files. Repaired permissions of both drives and single user boot and fsck not show any I/O. Even Techtool Deluxe not shows any error on surface disk.
+23/12/08 9:16:52 /System/Library/CoreServices/backupd[300] Backup requested by user+
+23/12/08 9:16:52 /System/Library/CoreServices/backupd[300] Starting standard backup+
+23/12/08 9:16:53 /System/Library/CoreServices/backupd[300] Backing up to: /Volumes/Backup/Backups.backupdb+
+23/12/08 9:17:00 /System/Library/CoreServices/backupd[300] Event store UUIDs don't match for volume: Defiant+
+23/12/08 9:17:14 /System/Library/CoreServices/backupd[300] Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|+
+23/12/08 9:27:07 /usr/sbin/ocspd[326] starting+
+23/12/08 9:27:11 dotmacsyncclient[324] POST /Info.woa/wa/XMLRPC/accountInfo (FAILED), httpStatusCode:401, errorType:101 (domain=DAVErrorDomain, code=3), transactionState:5, txnId:7DE5416C-017D-4BCA-8DF1-472541C9BA66, auto-retries=0, manual-retries=0+
+23/12/08 9:27:12 com.apple.launchd[148] ([0x0-0x25025].dotmacsyncclient[324]) Exited with exit code: 139+
+23/12/08 9:31:17 /System/Library/CoreServices/backupd[300] No pre-backup thinning needed: 4.31 GB requested (including padding), 133.64 GB available+
+23/12/08 9:31:17 /System/Library/CoreServices/backupd[300] No pre-backup thinning needed: 4.31 GB requested (including padding), 133.64 GB available+
+23/12/08 9:39:12 kernel disk2s2: I/O error.+
+23/12/08 9:39:12 kernel disk2s2: I/O error.+
+23/12/08 9:39:12 kernel disk2s2: I/O error.+
+23/12/08 9:39:12 /System/Library/CoreServices/backupd[300] Error: (-36) SrcErr:YES Copying /Users/linuxades/Movies/arrest002.mpg to (null)+
+23/12/08 9:39:12 /System/Library/CoreServices/backupd[300] Error: (-36) SrcErr:NO Copying /Users/linuxades/Movies/arrest002.mpg to /Volumes/Backup/Backups.backupdb/Mac Pro Defiant/2008-12-16-201529.inProgress/6E3CA6D6-63DC-4934-BA58-98708D109D07/Defia nt/Users/linuxades/Movies+
+23/12/08 9:39:12 /System/Library/CoreServices/backupd[300] Stopping backup.+
+23/12/08 9:39:12 /System/Library/CoreServices/backupd[300] Error: (-8062) SrcErr:NO Copying /Users/linuxades/Movies/arrest002.mpg to /Volumes/Backup/Backups.backupdb/Mac Pro Defiant/2008-12-16-201529.inProgress/6E3CA6D6-63DC-4934-BA58-98708D109D07/Defia nt/Users/linuxades/Movies+
+23/12/08 9:39:18 kernel disk2s2: I/O error.+
+23/12/08 9:39:18 /System/Library/CoreServices/backupd[300] Error: (-36) SrcErr:YES Copying /Users/linuxades/Movies/awesome.mpeg to (null)+
+23/12/08 9:39:18 /System/Library/CoreServices/backupd[300] Copied 51331 files (35.5 MB) from volume Defiant.+
+23/12/08 9:39:24 /System/Library/CoreServices/backupd[300] Backup canceled.+
+23/12/08 9:39:24 /System/Library/CoreServices/backupd[300] Backup canceled.+