Fix a corrupted backups file
Raoul Bhatia edited this page Aug 14, 2020
·
3 revisions
In rare circumstances, your backups file in pc/hostName/backups might be corrupted and/or restarted from backup number #0.
The backups and backups.old file might then look something like shown below. Your pc/hostName directory will hopefully still contain the old backups, organized in individual sub-directories:
ls -altr pc/hostName/ | tail -n 15
drwxr-x--- 1 backuppc backuppc 396 Aug 3 07:26 5503
-rw-r----- 1 backuppc backuppc 4050 Aug 3 07:37 XferLOG.5503.z
drwxr-x--- 1 backuppc backuppc 568 Aug 12 00:44 5504
-rw-r----- 1 backuppc backuppc 14460 Aug 12 00:59 XferLOG.5504.z
-rw-r----- 1 backuppc backuppc 0 Aug 12 23:34 XferLOG.5505.z
drwxr-x--- 1 backuppc backuppc 568 Aug 12 23:47 5505
drwxr-xr-x 1 backuppc backuppc 226 Aug 13 00:01 ..
-rw-r----- 1 backuppc backuppc 65 Aug 13 02:21 backups.old
drwxr-x--- 1 backuppc backuppc 568 Aug 13 09:37 0
-rw-r----- 1 backuppc backuppc 125 Aug 13 09:37 backups
drwxr-x--- 1 backuppc backuppc 3998 Aug 13 09:37 .
drwxr-x--- 1 backuppc backuppc 3080 Aug 13 09:43 refCnt
-rw-r----- 1 backuppc backuppc 745080 Aug 13 09:43 XferLOG.0.z
-rw-r----- 1 backuppc backuppc 9479 Aug 13 13:00 LOG.082020
-rw-r----- 1 backuppc backuppc 0 Aug 13 13:14 LOCK
cat pc/hostName/backups
0 full 1597273203 1597304229 66263 231293732766 904 29562 43 30377251 0 0 0 0 3 35321 4433611 0 1
rsync 0 4.4.0 139720 0
cat pc/hostName/backups.old
0 active 1597273203 3 0 1 rsync 0 4.4.0 58824 0
Stop the backuppc process
systemctl stop backuppc
As the user backuppc, use BackupPC_fixupBackupSummary to recreate the backups file.
sudo -i -u backuppc
time BackupPC_fixupBackupSummary hostName; echo $?
Validate that you can restore from the previous backups (use your respective IDs, make sure you test both full and incremental backup restore!)
# Create temporary restore file with safe permissions
touch /tmp/restoretest.tar && chmod 600 /tmp/restoretest.tar
# Test full backup
BackupPC_ls -h hostName -n 3610 -s '/shareName' '/'
BackupPC_tarCreate -h hostName -n 3610 -s '/shareName/' '/' > /tmp/restoretest.tar && tar tvf /tmp/restoretest.tar
# Test incremental backup
BackupPC_ls -h hostName -n 5504 -s '/shareName' '/'
BackupPC_tarCreate -h hostName -n 5504 -s '/shareName/' '/' > /tmp/restoretest.tar && tar tvf /tmp/restoretest.tar
# Cleanup
rm /tmp/restoretest.tar
When verified good, restart backuppc
systemctl start backuppc