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Re: [BackupPC-users] Resume Backup
2008-05-18 17:45:02
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Hello,
I found the source of the problem:
Q: Why does my transfer die with something like the following error?
rsync: error writing 4 unbuffered bytes - exiting: Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(463)
There are several common causes for a remote rsync process going away:
- The destination disk is full (remember that you need at least the size of
the largest file that needs to be updated available in free disk space for the
transfer to succeed).
Bingo. That's it. I would have hoped for a more specific error-Message, though. Maybe it would be advisable to make Backuppc check, if the disc is full in case of a "child exited prematurely" error and let BackupPc display a message "child exited prematurely, Your disc is full" message?! Greetings, Hendrik
Hi,
I just traced the problem further:
Before starting the backup, I launched a ping from the
backuppc server to the client and piped the output into a log-file. Then,
after the backup stopped with "child exited prematurely", I checked the last
lines of the ping-log file and didn't find any interruption of the connection.
Moreover the ping was very well. Mostly below 5ms, rarely around
50ms.
Then, I checked the log of rsync on the
client:
2008/05/18 21:17:20 [2988] rsync on . from backuppc@vdr01 (192.168.0.2)
2008/05/18
21:28:08 [2988] file has vanished: "..." (in cDrive)
2008/05/18 21:35:04
[2988] rsync: opendir "ygdrive/c/WINDOWS/system32/c:/Dokumente und
Einstellungen/All Users/Desktop" (in cDrive) failed: Permission denied
(13)
2008/05/18 22:20:41 [2988] rsync: writefd_unbuffered failed to write 4
bytes [sender]: Connection reset by peer (104)
2008/05/18 22:20:41 [2988]
rsync error: error in rsync protocol data stream (code 12) at io.c(1119)
[sender=2.6.8]
2008/05/18 22:21:55 [1808] connect from VDR01
(192.168.0.2)
2008/05/18 22:21:59 [1808] rsync on . from backuppc@vdr01 (192.168.0.2)
2008/05/18
22:32:42 [1808] file has vanished: "..." (in cDrive)
2008/05/18 22:40:14
[1808] rsync: opendir "ygdrive/c/WINDOWS/system32/c:/Dokumente und
Einstellungen/All Users/Desktop" (in cDrive) failed: Permission denied
(13)
2008/05/18 23:27:09 [1808] rsync: writefd_unbuffered failed to write 4
bytes [sender]: Connection reset by peer (104)
2008/05/18 23:27:09 [1808]
rsync error: error in rsync protocol data stream (code 12) at io.c(1119)
[sender=2.6.8]
This happens on both clients.
Does that tell you anything?
Greetings,
Hendrik
definitely use rsync/rsyncd if possible. I do find that smb
can be much faster on a local lan but you have to deal with file locks on
the client side as well as permission issues as samba does not give all the
same information as the real filesystem the file sit on.
On Sat, May 17, 2008 at 10:13 AM, Les Mikesell < les AT futuresource DOT com> wrote:
Hendrik Friedel wrote:
>
> The backups I run
have a size of 20-30 GB and it takes around 5 hours, even
> for an
incremental Backup (54 Mbit Wlan), which is quite disappointing in
>
the fist place (rsync, Client: Centrino 1.7Ghz 1.5 GB Ram, Server
Athlon
> XP1700, 512MB Ram). This would be acceptable, but for some
reason -dispite a
> good WLAN connection- many backups stop with
(apparent) transfer errors. I
> can hardly complete any
Backups.
Wireless is subject to interference from an
assortment of sources. Can
you plug the client in for the initial
run?
> Now, it seems that BackupPC does not support
resuming backups. Is there a
> specific reason for this? Would it be
possible to add this functionality?
Are you using the rsync
or rsyncd methods? I don't think the others can
resume.
--
Les Mikesell
lesmikesell AT gmail DOT com
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