TM Network Backups Freezing up Host computer....

In my workgroup we have set up a 10.6 Mac Mini as a network backup for several other macs. There's three of us backing up our 10.6 Macs to a RAID1 array connected to the Mini via Firewire.
Everything works great as long as the Mini is available, but we're running into a problem any time someone logs out or shuts down their machine while Time Machine is backing up. The host machine (the Mini) freezes up when this happens and has to be rebooted each time.
Since not all of our users are tech savvy, we're not sure that simply training them to stop a backup job first before logging out is going to work.
Has anyone else dealt with this? Is there any way to make the host Mini more robust in dealing with a dropped backup job?

normally, TM should stop a backup cleanly when the computer shuts down and users don't need to do this manually. logging out should not interrupt a TM backup at all. but try using this link
http://systemsboy.com/2008/04/time-machine-after-logout.html
I know it works with external drives but I'm not sure if it will help with a network backup like yours.

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TimeMachine network backup crashing my computer

I have a USB drive attached to my router and available via samba. I've followed the instructions available from multiple sources online on how to set this drive up as a TM backup, and it works fine. However, every so often, I will notice that fsck_hfs is running, eating up 20% or more CPU, with kernel_task taking another 10-15%. When I disable TM or turn off airport, this problem ceases. If I leave fsck_hfs go long enough, my system locks up and I need to hard reboot.
Two questions: a) is this a known bug, and if so is there a workaround? b) can I tell my system not to run fsck_hfs on remote drives? I consider (b) a viable option and I really don't care about the consequences - I would much rather rebuild my TM sparsebundle every month then have my computer crash every day.

jdidion wrote:
BTW, are you saying that if I instead attach this drive to my linux server and attach TM via AFP that Apple will support this in the event that the fsck_hfs problem still occurs?
If it meets this criteria: +*If your backup disk is on a network, the network server must use Apple File Protocol (AFP) file sharing, and both your computer, and the networked backup disk, should have Mac OS X 10.5.6 or later.+*
It's way beyond my level of expertise, but this post in another forum may contain the key:
The technical reason why Apple limits Time Machine to 10.5 AFP volumes appears to be to prevent disk image corruption. There were additional features added to AFP in 10.5 to support Time Machine. These presumably allow the disk image engine to force disk image journal data to write out all the way to the disk. Without such features, a network interruption can result in a corrupted filesystem on the disk image despite journaling. Remember, journaling relies on the journal being written all the way to disk before the changes take place. If you can't guarantee that (e.g., because of network/NAS buffering) then the journal is useless. Time Machine appears to rely heavily on disk journaling to deal with network drop-outs, interrupted backups, and the like. Take this away and your data is at risk.
If the NAS you are using supports these features it should report them to the OS and you should natively be able to choose that volume. If you have to trick the OS to use the volume it means the NAS does not support it.
To summarize: if you care about your backup data you should avoid using non-natively supported AFP servers.

Using iMovie 6.0 backups freezes my computer

Ever since I downloaded the latest iTunes update my iMovie 6.0 backups freeze on my new La Cie 1 Terabit hard Drive. I can escape iMovie 6.0 but I can't reopen it, and I can't shut down my computer internally.

Thanks for the suggestion. I went on the Lacie website and got the manual and followed the initialization process and partioned the disk drive even though I didn't need to. This seemed to work.

My airport network will not connect to to the internet via my modem. My host computer is a hp running windows xp. I have had great connection for 3 years. Then suddenly can not connect. Please can you assist

My airport will not connect to the internet via my modem. Worked for 3 years. Suddenly stopped. Main host computer is hp running windows xp.
When trying to connect windows states connection was cancelled. I have had hp checked by compputer repair and still have same problem?

The router is much, much newer than the computer, perhaps some characteristic of the WiFi network as it's currently setup is preventing the computer from connecting.
Try to go back to the basics: set your WiFi network to "b" mode only (i.e., turn off "g") and termporarily remove the password from it. See if the computer will at least establish a connection at that point. Then start turning on one thing at a time ("g" mode, then security, etc).
Not sure what format your WEP key is, but if it's not 10 characters (the minimum for the standard, which constitutes a 64-bit key), you can try making it that long. If it's 13 or 26 characters, it might be a higher encryption than the computer can support.
If all else fails, you could try looking on ebay/craigslist for a copy of Tiger to install on the iMac, which would have software support for more WiFi encryption schemes. Also, it would provide software support for USB WiFi adapters that would also be able to connect to more modern networks.

Printer Utility cannot lookup host computer for network printer sharing

Recently I set up a local net work. G4 Quicksilver is host computer,iBook tries to lookup host to print either from iBook or G4 desktop,get message "can't lookup host". I can access G4 desktop from the iBook, open documents and work on them and have (I think) set up the network correctly. I can access internet from both. I have a D-link router which I have used to access the internet with my iBook (has airport card) but recently installed an airport card in the G4. One thing I noticed was that the G4's name that shows up in the printer utility and in the "cannot lookup hos"message is different from the name I gave my local network, though the name ends in .local for both. Both identify my G4.I have tried AppleTalkon and off, when on my printer utility on th iBook shows the G4 printer as having the iBook as host. I use a CS6600 Epson standalone if that is relevant. Thanks in advance!

Disabling safe eyes does not fix this problem. You have to actually un-install safe eyes....
I found this out the hard way. After 4 hours on the phone with HP trying all different things, on two different computers....we gave up....
Both computers already have safe eyes installed. Both running Windows XP Service Pack 3. When you try and install the printer and configure for wireless, the program craps out and gives you an error message. We tried multiple things to no avail. I asked the rep, hey could this be Norton or Safe Eyes? I don't think so. So, this was referred to a Network SME. And I gave up.
Recently, I decided to give it a shot again. I un-installed Safe Eyes completely. No problem. Wireless printer softer installs, does not crap out, and I can print wireless!
Ok, so now I want to re-install safe eyes. After re-installing, wireless printing is broken. My theory is there is a incompatibility or conflict with one of the drivers. The dll that is mentioned is the icf.dll driver.
So, who is going to fix this? I've been using safe eyes for 7 years and don't feel like un-installing just to wireless print. However, the whole reason I bought this printer was for it's wireless capability! Help HP!

May a recent i Mac be installed as the host computer for a wireless community

May a recent iMac be installed as the Host Computer for a wireless community. The present situation is; the iMac is subservient to the e Mac. I do not want to have two computers. I have one guest on the wireless.

There are some wireless external hard drives that can be used with the iPad.
The Kingston Wi-Drive, which costs $50 for the 16 Gigabyte, and then $30 more for every 16 gigs more. It works by you turning it on and then accessing the files on it from an app that you download on your iDevice. You can access music, movies, and other stuff. No connections or anything, it works like a WiFi connection, you connect to it from the setting on the iPad under wireless networks.
Then there is the Seagate GoFlex, which some would recommend over the Wi-Drive. But this one costs $199 and had 500 Gigabytes of storage. It works the sameway as the Kingston: no wires, runs over its wireless connection. You can actually fit up to 300 HD movies on it.
Another option:
Expand your iPad's storage capacity with HyperDrive
http://www.macworld.com/article/1153935/hyperdrive.html
On the road with a camera, an iPad, and a Hyperdrive
http://www.macworld.com/article/1160231/ipadhyperdrive.html
Mac - How to Move the iPhone & iPad iTunes Backup folder to an External Hard Drive
http://osxdaily.com/2011/03/05/how-to-move-the-iphoneipad-itunes-backup-folder-t o-an-external-hard-drive/
Windows - Change iPad default backup location
http://apple-ipad-tablet-help.blogspot.com/2010/07/change-ipad-default-backup-lo cation.html
Windows - Changing IPhone and iPad backup location
http://goodstuff2share.wordpress.com/2011/05/22/changing-iphone-and-ipad-backup- location/
 Cheers, Tom

Can't find my data from Time Machine network backup

Migration assistant shows inconsistent sizes for applications, computer settings and other files/folders, about 30GB when I had 270 GB only in pictures.
I did a clean Mavericks install.
How do I find my data from the TimeMachine network backup?
The size of the TimeMachine backup is consistent with what I had before ( >300 GB)...so how do I recover it?.
I'm using a new user account name in the clean installation.
Thanks

Read a few threads about this being a problem with account access, so I renamed the account in my new installation to the account name used to create the backup and found the old accounts....now when trying to proceed it told me there was a conflict with the account name and i had to use a different one!!.
Apple has stopped to be simple...
So how are we suppose to use the migration assistant if either way there is a problem? ( using same or different account name )...

Wired Network conputer cannot find host printer

I cannot print to host printer on a home wired network.
Printer is HP Photosmart 7520 e all in one.
Host Compter is a Dell Dimension 8100
Pentium 4 1.3 GHz 2.0 GB RAM
Windows XP SP3 host computer.
Netgear N600 Dual Band Router
Model WNDR3400
Network Computer:
Nobilis
Pentium 4 dual core 2.8 GHz
2.5 GB RAM
Linux Mint 17 OS
Both computers share the internet without any problems. The Dell computer prints without any problems. The Dell computer properties 'share this printer' box is checked. I cannot find any IP address for the printer. When I printed out the printer configuration sheet, no IP address was given. When I go to the Control Center->Printers->local-host on the Linux OS, it says it is 'connected to local-host' and 'There are no pinters configured yet'. I then selected 'Add' to add a printer. A 'New Printer' screen comes up and ask to 'Select Device' and also 'Enter URI'. This is where I am stopped in my tracks since I have no 'URI'. Under the 'select device' side there are several options: LPT #1, Serial Port #1, Enter URI, and 'Network Printer'. If Network Printer is selected a dropdown list appears: The main heading is "Find Network Printer'. Selecting 'Find Network Printer' gives various internet protocols (ipp, ipps, https, ipp14, LPD/LPR Host or Printer, Windows printer via Samba, and APP Socket/HP Direct.
The Dell computer has alway worked fine and without problems (XP OS) on any HP printer.
This is where I am stymied! Can someone help me from here.

Can you see the Windows computers when browsing from GO > Connect to server?
Anything different in network connection - you use wireless, they use ethernet, for example?

Scanner Sharing Only Working With a User Logged Into Host Computer

I have been able to get my Brother MFC7020 to work perfectly with the network. I have gotten the scanning to work over the sharing system as well but with a weird glitch. I must have a user logged into the host computer in order for the shared scanner to appear in Image Capture. If I log out of the host computer, the scanner disappears. I have double checked my settings, I have locked the preference pane, and I still have this issue. For some reason when the host computer is idle at the login window I cannot access the shared scanner. Printing usually works however.
I am running Snow Leopard 10.6.4 on all machines in the network and the host is a mini.

Probably because the process is set up as a launch agent instead of a launch daemon. Agents launch when somebody logs in. Daemons can run when the system starts up or when someone logs in. You could try moving the plist (which is probably in /Library/LaunchAgents) to the /Library/LaunchDaemons folder and see what happens. But, if it is not designed to run in that environment, it won't work right.
The plist should have a name like com.brother.something.plist. You will need to restart to get it to register correctly.

ARC3: RFS network connection lost at host 'stdbhost'

Hi there,
having oracle 8.1.7.4 64 bit on Aix 4.3.3 replicating on a twin machine.
While archiving many logs within few minutes i'm having this error:
ARC3: RFS network connection lost at host 'stdbhost'
ARC3: Error 3113 creating standby archivelog file at host 'STDBIDIP.IDI.IT'
ARC3: Error 3113 creating archivelog file 'stdbhost'
Then after few seconds it retries and succeded. My clause in the primary db is:
SERVICE=stdbhost OPTIONAL REOPEN=180
The problem is that sometimes it does not succeed so i loose some archives and there's a gap sequence. Unfortunately i loose some archives that after the backup of the primary are deleted so i can't apply get them. The only way is to restore those files. But i can't every time do this!
My database was replicating from about two months without problems. Then we activate it for test and now i rebuilt it but now having problems i mentioned above.
I have followed the same procedure.
I was guessing why i'm getting that error. How can it be solved? I see that on the primary site sometimes more than one archive processes are activated. I was wondering if on the standby site on rfs process was enough to handle all archives arriving at the same time. If not is it possible to activate more rfs'?Long postings are being truncated to ~1 kB at this time.

I am willing to bet it is not linksys. Most likely it is your service provider blocking p2p.
This is a major battle with service providers. If you do some research on this you will see what I am talking about.

Hard drive backup - then network backup

I created a full backup of my macbookpro to a connected firewire drive (150g). I then hooked this same hard drive up to another leopard computer (imac). The macbookpro sees the drive and is willing to back-up to it.... but it wants another 150g; as if it's starting over from scratch.
Is it using two different methodologies for backing up? Do you have to stick with one methodology when backing up? Backing up 150g over the network is not really an option - hence the reason I wanted to do it as mentioned above. Thank you!

It seems to be that on a locally-connected drive, Time Machine backs up into a simple folder structure, whereas if you are connected remotely, it backs up into a .sparsebundle file named after the connected computer. For now, probably best to stick with one method or the other until someone figures out how to convert between the two.
I suspect you could convert the local backup and package it in a .sparsebundle, but my network backup is nowhere near finished, so can't try it yet.

Host computer VI deploying to cRIO controller

When I include a Network-Published Shared Variable in my Host VI, the VI wants to deploy to my cRIO. Without the Network-Published Shared Variable it runs on the Host computer as intended.
Yes, the Host VI in under My Computer and the RT VI is under the target in the LabVIEW Project.
How do I use a shared variable in a VI inteded to run on the Host computer? I need to pass data between my RT VI running on the cRIO and a Host VI running on a Host Windows machine.
Solved!
Go to Solution.

Hello Shall12,
I misinterpreted your initial posts- this option needs to be modified for the target on which the variables are deployed. Based on your screen capture, the library is contained on the RIO and will need to be modified there. The behavior you're seeing is described in more detail here:
KnowledgeBase 4TIGNL8A: Disabling Auto-Deployment of Scan Engine I/O Variables
http://digital.ni.com/public.nsf/allkb/D9CF23FD2534E128862575430080CA17?OpenDocument
KnowledgeBase 3V0H36XL: Connecting a PC Host VI to a Startup Application on a Real-Time Target
http://digital.ni.com/public.nsf/allkb/A82CEF3FDC14DCA68625712500009649
Tom L.

Redesignating the Host Computer

Hello. Maybe these are simple questions, but I am not an expert, so here it goes.
1. I am replacing my host computer so I will need to redisignate the host computer on my network. Do I have to start over and set up the network again, or is there an easier way that will not affect the exisiting networked computers and devices?
2. My current host is hardwired to a WRT54GS router. I am replacing the existing hardwired desktop host with a laptop that will be wireless and the router and cable modem will be stand-alones. Are there any issues associated with this I should know about? Thanks!

1) Your WRT54GS does not care which computer is the host. All network computers are treated equally. I don't know whether or not Windows cares about this - I guess this depends on how you set things up in Windows. But this definitely is not a router problem. Might be a Windows problem.
2) The only issue with this setup is that whenever you change any of your router settings, you should connect to the router by wire. Do not try to change router settings wirelessly. Changing the router settings wirelessly usually works, but sometimes can cause serious router problems. And never ever try to upgrade the router's firmware wirelessly - this will likely kill your router.

Simple home network backup strategy ?

I have a simple home network of 4 machines on a router, all running Arch. None of the boxes are a server. I do not have NFS nor Samba running. I want a simple, incremental cron-based weekly backup process, to be backed up to a spare hard drive on one of the computers (eg hostname "master"). I believe rsync with ssh might be the easiest way to go, something like: "rsync -e ssh -varuzP /home/whoever master:/mnt/tmp/backups".
The cron job would first of all make sure the master computer is online, or send a message to the user to that effect. My problem is I do not know how to remotely mount, from a cron job, the second hard drive on "master". I suppose I could ensure that "master" auto mounts that drive each session but I would prefer not to do that. Any ideas appreciated.

Another strategy for you to consider...
At a slightly different time each night (or whatever interval you want), have each computer on your network create a backup archive of itself. I recommend xz compression for this because it is slow to compress and small, but fast to decompress. eg
include="$include /root"
include="$include /home"
exclude="$exclude --exclude=/home/*/.mozilla/firefox/*/*Cache/*"
exclude="$exclude --exclude=/home/*/.mozilla/firefox/*/bookmarkbackups/*"
exclude="$exclude --exclude=/home/*/.mozilla/firefox/*/urlclassifier3.sqlite"
datestamp="$(date +%Y-%m-%d-%H%M%S)"
tar --ignore-failed-read $exclude -cf - $include | xz > "/backups/backup-$HOSTNAME-$datestamp.txz"
Next, if the security is needed, have the computer encrypt the archive using a GPG public key created for this purpose. (By using a public key, you don't need to be there to type in the password, and you don't need to include a password on the command line.)
gpg --always-trust -r 0xAAAAAAAA -o "/backups/backup-$HOSTNAME-$datestamp.txz.gpg" -e "/backups/backup-$HOSTNAME-$datestamp.txz"
(Where "0xAAAAAAAA" is your public key ID)
You can then delete the .txz original.
Then have each computer copy its backup file to each of the other computers on the network. You can do this by sharing an NFS backup folder on each computer, rsync, or using any other method or protocol. In some cases you could alternatively have a computer fetch a backup from another computer.
You can write a single script to do all of this on every computer, and have it read the $HOSTNAME variable so it can determine what machine it is running on.
Later in the night, have each computer run a separate script that checks that all the backups for today are present in its own backup folder, including those from all other computers. If there is a problem, have it send an admin alert, perhaps using local email or a CLI smtp client like msmtp. If there isn't a problem, have each computer run a cleanup routine to delete old backups. eg
# Remove backups older than 10 days
find -L /backups/ -type f -mtime +10 -name "backup-*.gpg" -execdir rm {} \;
This strategy is good for relatively low-volume dynamic data, like a /home folder and /etc. I find I like having separate backups from each of the past 10 days, rather than one incremental backup. For larger static data (music, movies, etc) you may want to use an incremental backup.
Advantages:
Redundancy - every computer keeps backups of all the others
Decentralized - no need for, or reliance on, a dedicated master
If the network is down, each computer at least creates a local backup.
With static tar archives instead of incremental, you have snapshots of the folders as they were several days or weeks ago. This way if you discover a problem later, you can go further back than an incremental backup allows.
Each computer can backup a custom set of folders for itself. And each computer can store backups for a different number of days, depending on its storage capacity.
Issues:
Be sure to have a copy of the GPG secret key! If the only backups of it you have are encrypted with the public key, you're in trouble. One way to avoid this is to have your backup script support a manual mode which encypts with a conventional passphrase instead of the public key. You can run this manual mode to create a static backup occassionally, and it will prompt you for the passphrase. The backup will thus contain an accessible copy of the key pair used for the automatic backups.
Sometimes NFS will hang for hours rather than producing an error. This is why it's good to have a separate script on a separate cron job which checks if the backups were created successfully and sends an admin alert.
Always test backups! It is terrible to discover your backup wasn't being created as you expected when you go to use it. Test to make sure you can decrypt and decompress it, and that it contains everything you expect.
Last edited by IgnorantGuru (2010-04-06 14:31:22)

Host Computer won't show on MBA Remote Disc

I need to install iWork on to my MBA and I'm trying to use the DVD sharing option...
On my host computer (an imac) I have opened the system preferences>sharing and clicked the DVD or CD sharing box, as well as the Ask me before allowing other to use my DVD drive box.
I then switch over to the Air, go to finder, click on Remote Disc under Devices and...nothing shows up...
They're both connected to the same wireless network...
Help! And Thank You!

Hi-
The error report "the underlying task reported failure on exit" is a hard drive error that Disk Utility couldn't repair. However, if the Disk Utility was from the Leopard install disc, then the version is wrong. If the error came from the Tiger disc, you may need DiskWarrior to correct the error.
First, though, try repairing the hard drive with fsck.
Boot to Single user mode by holding Command+S while booting. In the resulting screen, at the command line, type /sbin/fsck -fy and press Return.
fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found:
The volume (nameofvolume) appears to be OK
If fsck found issues and has altered, repaired, or fixed anything, it will display this message:
FILE SYSTEM WAS MODIFIED
Important: If this message appears, repeat the fsck command you typed until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do). Two, three or four tries may be necessary.
When fsck reports that your volume is OK, type reboot at the prompt and then press Return.
Your computer should start up normally and allow you to log in.
If the fsck returns that the drive is OK in the first pass, and typing "reboot" doesn't get a proper startup, try resetting the PRAM on the G4. Hold CommandOption+PR while booting, hold until the second startup chime, and release. The machine, hopefully will boot.
Let us know how you fare with this.....

TM Network Backups Freezing up Host computer....

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