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User profile for user: Community User
Community User Author

TM Fails on remote AFP share

Hi!

I'm running netatalk on an Ubuntu server that I have. I'm able to connect to it through finder and read/write files to it. However, when I'm trying the time machine, I can see the sparse image get created on my ubuntu server. But after awhile, TM fails and the sparse disk image is removed from the server. I found that in my system.log, there are a few entries relating to my issue. I've tried to do a search on this, but couldn't find any solutions. Just wondering if anybody has any ideas...


---snip----
Feb 13 17:52:39 firedancer /System/Library/CoreServices/backupd[656]: Starting standard backup
Feb 13 17:52:39 firedancer /System/Library/CoreServices/backupd[656]: Creating disk image /Volumes/machine/firedancer_001b63b77858.sparsebundle
Feb 13 17:52:40 firedancer hdiejectd[687]: running
Feb 13 17:56:58 firedancer kernel[0]: hfs: Initializing the journal (joffset 0x1730000 sz 0x4000000)...
Feb 13 17:59:36 firedancer /System/Library/CoreServices/backupd[656]: Error 45 creating backup disk image
Feb 13 17:59:36 firedancer /System/Library/CoreServices/backupd[656]: Failed to create disk image
Feb 13 17:59:36 firedancer /System/Library/CoreServices/backupd[656]: Backup failed with error: 20
----

Macbook Pro, Mac OS X (10.5.2)

Posted on Feb 13, 2008 4:22 PM

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17 replies
User profile for user: L0bby
L0bby
User level: Level 1
0 points

Feb 15, 2008 2:23 PM in response to Community User

Hi,

i got exactly the same error but I'm backing up onto a SMB Mount.

Here is my Error-Log:

Feb 15 23:11:34 lala /System/Library/CoreServices/backupd[943]: Backup requested by user
Feb 15 23:11:34 lala /System/Library/CoreServices/backupd[943]: Starting standard backup
Feb 15 23:11:34 lala /System/Library/CoreServices/backupd[943]: Creating disk image /Volumes/mac-timemachine/eh_0019e33a33f5.sparsebundle
Feb 15 23:11:56 lala /System/Library/CoreServices/backupd[943]: Error 45 creating backup disk image
Feb 15 23:11:56 lala /System/Library/CoreServices/backupd[943]: Failed to create disk image
Feb 15 23:11:56 lala /System/Library/CoreServices/backupd[943]: Backup failed with error: 20




I've no idea why he is failing to create the backup disk image. On the machine serving this SMB Mount are no errors listed in the Logfiles. Maybe someone can help me/us.

Thanks in advance,
L0bby
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User profile for user: Scot Stevenson
Scot Stevenson
User level: Level 1
15 points

Feb 20, 2008 1:11 PM in response to Community User

I had a nice setup with an Ubuntu-based RAID-1 share, AFP (netatalk) and Time Machine, everything just fine, until 10.5.2 came along and broke everything. From what I can tell, Apple played around with the settings and the old tricks dont work anymore -- which is fair, because they always did say it was unsupported.

The general consensus seems to be that it is not worth trying to get this to work until Time Capsule is out, because Apple might have simply disabled remote backups totally until then. So we're all waiting to see if there will be a patch.

I feel your pain -- Time Capsule is not a RAID, for starters. What Apple should do (and yes, I have suggested this via feedback) is create a serious NAS offering, an "iStore" or something like that. My hope is that they are waiting for the ZFS file system to work a-okay.

Y, Scot
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User profile for user: David Patterson2
David Patterson2
User level: Level 1
9 points

Feb 22, 2008 1:54 PM in response to Community User

I was having this same issue. The way I solved it was by creating the .sparsebundle on my local drive, then moving it to the afp share on my AE. It's worked fine ever since.

hdiutil create -size 90G -fs HFS+J -type SPARSEBUNDLE "MyMacsName_macsMACaddy.sparsebundle"

So for example, wiz561 would replace my sparsebundle name with "firedancer_001b63b77858.sparsebundle"

Anyway, give it a shot.
David

/yeah, I know. 'unsupported' and all that.
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User profile for user: btrvalik
btrvalik
User level: Level 1
0 points

Feb 27, 2008 11:06 AM in response to btrvalik

TM took all night to complete 29 GB on a NAS that is fairly fast (on finder copies it is ~20MBytes/s) lot's of disk chatter.. often more reads than writes.. not much progress. Network activity was really bouncing around (10kb-1M-idle) This AM it stopped and automatically restarted..seemed to run faster but then slowed. Then I restarted it manually.. now it is running at a solid 6-7MB/s and it completed 37 GB in about 2 hrs..should be done soon. Still looks like there is twice the quantity of reads as writes.. 100GB read (from network) / 50 GB write. Looks like apple has some work to do before they release time capsule.
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User profile for user: Community User
Community User Author

Mar 1, 2008 5:36 AM in response to Community User

It's kind of sad because it seems like Apple is getting stricter and stricter on what you can and can not do. 😟 Time Machine is an awesome idea, but I am not going to shell out 300 bucks for a 500 gig time capsule when I already have an access point and cheaper disk space already setup.

I can understand not wanting to support it, but come on...I'm not going to sue apple because I'm having issues trying to backup my mbp to a linux server. Just say it's not supported, but make an "unsupported" way to actually do this.

Furthermore, I wonder how a lot of companies/businesses are going to use this? It's awesome to have a change control system and there's a lot of benefit for this....but I can't imagine a company buying multiple timecapsules while they have a huge NAS they can use.

Between this and Safari using a hidden API to speed it up...it makes me wonder if, shall I dare to say, Apple is using similar strategies to Microsoft.
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TM Fails on remote AFP share

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