Re: [BackupPC-users] speed up backups
Les Mikesell schrieb:
> On 5/26/2010 3:41 PM, Ralf Gross wrote:
> > Ralf Gross schrieb:
> >> write(1, "N\2\0\7\5\3lvs\r\0\0\0\r\0\0\0lvmiopversion8\5"..., 594) = 594
> >> select(1, [0], [], NULL, {60, 0}) = 0 (Timeout)
> >> select(1, [0], [], NULL, {60, 0}) = 0 (Timeout)
> >> select(1, [0], [], NULL, {60, 0}) = 0 (Timeout)
> >> select(1, [0], [], NULL, {60, 0}) = 0 (Timeout)
> >> select(1, [0], [], NULL, {60, 0}
> >>
> >>
> >> smells like a time out, but I don't know where. I found a couple of
> >> messages
> >> with similar output in the list archives, but none of them had a solution
> >> yet.
> >
> > *grr*
> >
> > I only traced the Xfer PID, not the PID. BackupPC_dump seems to be
> > active and comparing the file list with the pool and I see high cpu
> > load.
> >
> > I'm sure that I haven't seen that as I abortet the backup before.
> > Now I'll have will wait until tomorrow morning...
>
> Until the 2nd full completes, the server side has to uncompress the
> stored copy to compute the checkums on existing files. And there may be
> some quirk about switching from tar to rsync that I've forgotten. Maybe
> the 1st run will add the checksum cache for files you already have.
The full rsync is still running sind 5/26 21:00. I'll report back when
it's done.
Ralf
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[BackupPC-users] restore file attributes
Hi, do you know if there are ways to restore file attributes (uid/gid, permissions) fetching file attributes from BackupPC? Thanks Matteo -- ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
Re: [BackupPC-users] hardware and configuration recommendations for speed?
Thanks for writing, Kim. Before going out shopping for hardware, I'd try and determine where your > performance problem is, ie on the server (due to external USB based > storage), or on the client. > A good point, but either way I need a hardware upgrade. A single external hard drive isn't going to cut it. At the *very* least, I need redundancy for the pool. Regardless of any issues on the client, writing to the disk over USB will become a bottleneck with as much data as there is to back up. You're right, though, I can probably be pretty modest about any hardware upgrades. It does seem to me that you are having a performance issue on the system to > be backed up, and assuming there isn't all sorts of junk software running on > the XP Home system that makes rsyncd compete for the already slow disk > subsystem, I would take a look at the rsyncd installation. (I have seen > active Antivirus make rsyncd max out a processor) > The XP Home system should be fairly clean, but the rsyncd installation is probably about 3 years old. Unfortunately, the Linux distro on the server has gone out of date (I think it's Ubuntu 7.04 or something) and lot of tools that I would use to measure performance on the server side (e.g., iostat, etc.) were not and cannot easily be installed at this point. Monitoring Windows performance should be pretty straightforward, though. > I have seen some poor results on *some* Windows XP systems with Cygwin > myself as well, using the aged 2.6.8 rsyncd package distributed from the > BackupPC sourceforge site. > > There are various guides on getting a more recent cygwin/rsyncd installed > on Windows, or for a quick switch-and-test you can install DeltaCopy on the > XP Home system for a quick trial run. > Are you saying that the download available from the sourceforge site is not the best option for giving Windows XP rsync superpowers? I've never looked at DeltaCopy; is there consensus that that's a better option than the sourceforge rsyncd/Cygwin? > On the hardware for the new server, I pretty much agree with Les - use > single disk or RAID1 for an uncomplicated fast setup. Stay away from RAID5. > Drive spindle speed is the main thing you want to focus on, especially if > the server will be backing up multiple clients simultaneously. > There's an idea! I have a small number of clients; perhaps I should allow BackupPC to back up only one at a time! -- ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
