05-29-2010
ufsdump backup duration
hi, i'm trying to figure out how to tell the amount of time a ufsdump of a directory takes. i use the below command:
echo "Starting Backup of u4" >> /backup/backup.log 2>&1
/usr/sbin/ufsdump 0uf /dev/rmt/0n /u4 >> /backup/backup.log 2>&1
echo "Finished Backup of u4" >> /backup/backup.log 2>&1
date >> /backup/backup.log 2>&1
mt offline >> /backup/backup.log 2>&1
my problem is, after the script prints "Finished Backup of u4" to my log there is a big gap for when the date command prints as can be seen below:
DUMP: DUMP IS DONE
DUMP: Level 0 dump on Fri May 28 05:36:06 2010
Finished Backup of u4
Fri May 28 08:14:46 AST 2010 <-- this was echoed by the "date" cmd
did my ufsdump finished at 05:36:06 or 08:14:46?
---------- Post updated at 09:44 AM ---------- Previous update was at 08:43 AM ----------
i think i found the answer. i think it's the time difference between the ufsdump.
for example, if my first ufsdump today is 08:00 and the next ufsdump is 09:00, then my first ufsdump backup took an hour. am i right?
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LEARN ABOUT XFREE86
bdb.db0
BDB.DB0(5) AFS File Reference BDB.DB0(5)
NAME
bdb.DB0, bdb.DBSYS1 - Contain the Backup Database and associated log
DESCRIPTION
The bdb.DB0 file contains the Backup Database, which records configuration information used by the AFS Backup System along with cross-
indexed records of the tapes created and volumes dumped using the Backup System commands.
The bdb.DBSYS1 file is a log file in which the Backup Server (buserver process) logs each database operation before performing it. When an
operation is interrupted, the Backup Server replays the log to complete the operation.
Both files are in binary format and reside in the /var/lib/openafs/db directory on each database server machine that runs the Backup
Server. When the Backup Server starts or restarts on a given machine, it establishes a connection with its peers and verifies that its
copy of the bdb.DB0 file matches the copy on the other database server machines. If not, the Backup Servers use AFS's distributed database
technology, Ubik, to distribute to all of the machines the copy of the database with the highest version number.
Use the commands in the backup suite to administer the Backup Database. It is advisable to create a backup copy of the bdb.DB0 file on tape
on a regular basis, using the UNIX tar command or another local disk backup utility.
SEE ALSO
backup(8), backup_savedb(8), buserver(8)
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OpenAFS 2012-03-26 BDB.DB0(5)