>>>>> On Sun, 19 Oct 2014 19:02:57 +0200, Ulrich Leodolter said:
>
> Hello Dan,
>
> On Sat, 2014-10-18 at 13:32 -0400, Dan Langille wrote:
> > On Oct 18, 2014,
> > at 4:03 AM, Ulrich Leodolter <ulrich.leodolter AT obvsg DOT at> wrote:
> >
> > > Hello,
> > >
> > > we have Win7 backup which does not come to an end within MaxRunTime=12h.
> > > server runs 7.0.5 (28 July 2014), the client has installed the
> > > bacula-enterprise-win64-7.0.5.exe. but the problem started about 2
> > > months ago, at that time windows client 5.2.10 was installed on the
> > > machine.
> > >
> > > the backup itself is about 100GB compressed and seems to finish
> > > on the client after about 6 hours, below are the last messages of
> > > the job before it gets stuck.
> > >
> > > 2014-10-18 03:18:09 troll-sd JobId 635821: Committing spooled data to
> > > Volume "Backup-0779". Despooling 1,692,736,419 bytes ...
> > > 2014-10-18 03:18:18 troll-sd JobId 635821: Despooling elapsed time =
> > > 00:00:09, Transfer rate = 188.0 M Bytes/second
> > > 2014-10-18 03:18:19 troll-sd JobId 635821: Elapsed time=06:11:45,
> > > Transfer rate=4.691 M Bytes/second
> > > 2014-10-18 03:18:22 troll-sd JobId 635821: Sending spooled attrs to the
> > > Director. Despooling 603,449,667 bytes .
> > >
> > > mysql status at the same time:
> > >
> > > # echo "show full processlist" | mysql
> > > Id User Host db Command Time State Info
> > > 6854 bacula localhost bacula Sleep 522 NULL
> > > 6873 bacula localhost bacula Query 21143 Sending data
> > > INSERT INTO File (FileIndex, JobId, PathId, FilenameId, LStat, MD5,
> > > DeltaSeq) SELECT batch.FileIndex, batch.JobId, Path.PathId,
> > > Filename.FilenameId,batch.LStat, batch.MD5, batch.DeltaSeq FROM batch
> > > JOIN Path ON (batch.Path = Path.Path) JOIN Filename ON (batch.Name =
> > > Filename.Name)
> > > 6899 root localhost NULL Query 0 NULL show
> > > full processlist
> > >
> > >
> > > we have a bunch of other clients (about 30), a mixture of linux, win7 and
> > > mac powerpc.
> > > all other backups run without problems for years now. there are even
> > > larger backups,
> > > in size and in number of files.
> > >
> > >
> > > does anyone have an idea why this single batch insert does not complete?
> > >
> > > do i need to analyze the attrs spool file itself ?
> > >
> > > yesterday i optimized the bacula database, but that doesn't help.
> > > there must be something special in the attrs spool file which the
> > > mysql server can't handle. the server runs on standard CentOS 6.5 x86_64.
> >
> > This is something which should be asked in the user mailing list, not the
> > devel mailing list. I am replying to that list instead.
> >
>
> Ok
>
> > Is this a large number of files?
> >
>
> about 750000, not very large.
>
> > I had something which took a while. I sped it up by giving PostgreSQL more
> > memory. Perhaps MySQL can do the same.
> >
> > Here’s what I did: https://plus.google.com/+DanLangille/posts/AKXoRido3U1
> >
>
> the mysql database is already optimized and has enough memory.
> backups up 4000000 files and 700GB run without problems.
>
> below are last job messages of the last failed jobs, it was canceled
> after 12 hours max run time.
>
> 2014-10-19 02:49:15 troll-sd JobId 635915: Elapsed time=05:43:32, Transfer
> rate=5.095 M Bytes/second
> 2014-10-19 02:49:16 troll-sd JobId 635915: Sending spooled attrs to the
> Director. Despooling 603,418,522 bytes ...
> 2014-10-19 09:05:43 troll-dir JobId 635915: Fatal error: Max run time
> exceeded. Job canceled.
> 2014-10-19 09:41:17 troll-dir JobId 635915: Error: Bacula troll-dir 7.0.5
> (28Jul14):
>
> the database shows already about 600k files for this jobs.
>
> mysql> select count(*) from File where JobId = '635915' and LStat is not
> null;
> +----------+
> | count(*) |
> +----------+
> | 616848 |
> +----------+
> 1 row in set (0.00 sec)
>
>
> is it possible that some special file attr brings the mysql datebase
> into troubles ? i really cant imagine. the mysql database is almost
> idle after first 600k have been inserted. there is no io traffic and
> cpu usage is also low.
>
> it seems i have to dump spooled attrs files tomorrow and compare to
> database to see at which attrs have been inserted and at which one it
> stops.
I think that will be difficult, because the insert is a join of various other
temporary tables so the order may be random.
> has anyone a better idea how to debug this problem?
> i am little bit lost :) because in the last 6 years since
> i am using bacula i never run into a problem like this.
Maybe you can attach strace or gdb to the mysql process running this insert
statement to see what it is doing? It doesn't look like a Bacula problem, but
it might be a bug in mysql.
__Martin
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