Author Topic: Almost complete loss of all disk space!!!  (Read 2658 times)

Offline Xairbusdriver

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Almost complete loss of all disk space!!!
« on: March 19, 2010, 10:59:43 PM »
Late Wednesday evening, I started getting almost constant warnings from TechTool Pro 5 that one or another Volume was dangerously close to having no space available!

What? How can that be? I just the day before did some 'spring cleaning' and brought my boot Volume up from 27GB to ~87GB free! The other partition on that drive was never less than 150GB free. The external 1TB drive, also with two partitions, had ~80GB free on one and ~50 on another. The smaller one has a Tiger boot system on it and I never add or change anything there more than a few times a year. The larger partition there is used for Time Machine and several other archives several times a week. But even on that partition, I had removed ~20GB not more than a few weeks ago. What is going on? And where did all that free space go? eek2.gif

It only took a few dozen warning dialogs to convince me that something was rotten in TechTool Pro. That was the app that was giving me the warnings. Actually, it was a Preference Panel doing it. I opened the Panel and realized I had not limited its Directory back up feature to my main boot Volume. It was backing up every Volumes Directory and at least two backups were being kept for each one! My first move was to simply turn the backuping (is that a word...Thinking.gif ) OFF! That should stop the warnings.

But it didn't, every thing in the Panel had to be stopped/turned off. Then I removed the Panel from the Prefs! nothing like shooting a dead horse while it's down...er, somthin' like that!

I then discovered that I had now lost "ownership" of the drive! Simply removing or transferring a file to the Volume required my password! Just what I needed...something to keep me off the streets! rolleyes.gif

Short story: Visited the TTP support site and posted my problem. Then I visited their forums and found that they had only this week decided that we should probably turn that backup procedure OFF until they sorted out the problem, several others had the same loss of space as I had. Further questioning confirmed that is was safe to simply delete any and all those back ups, at least for now, even though their protective uses would also be lost.

Next job, recover control/ownership of MY drive!!! Using DU supposedly repaired the Permissions, first run had the usually long list of ignorable items, except for one that it claimed to fix but it always came up on the next run (/usr/share/Java/derby-10.5.1.1). Sure looks like a Tiger file? Repairing PermissionsDisk first run took almost 3 hours to fill the window with errors and corrections. And, yet, it still indicated that 24 minutes remained before completion...and it still said that several hours later. "Do you think that's correct, Jim?" dntknw.gif The computer is always right, right? Mostly... I finally gave up and used Force Quit to put DU out of its misery. So, as my son used to say when he was barely three, "wha-nelse?" Some surfing and Terminal command entries confirmed that I was still persona non grata, as far as the drive was confirmed. Brewed another pot of (stronger) coffee, turned off the phones, locked the doors and hoped no one in the neighborhood would here my screams if I screwed up and opened Terminal!

Tried a few unix attempts to 'repairPermissions' and 'repairVolume'. Always got the "must have ownership status to do that stupid" replies. (and, yes, I was in the correct Directory...) Almost went the chmod and/or chown road but decided to try the, hopefully, safer "Get Info" method. I never said I was the bravest bleeding edger around! blush-anim-cl.gif

Selected the Volume, used Get Info, added myself to the "invited and honored guests" list. I was accepted, but still requested to 'sign the guest book upon entry.' Went back to the Get Info window and, this time, respectfully and with authority granted with my purchase price, told the System to change all the enclosed stuff with my appropriate R.E.S.P.E.C.T. (I am very near Stax, ya know...). So far, even though it took most of the last seven hours(!), it seems to have worked! sweatingbullets.gif

I have also moved/deleted many duplicates and regained some 75GB on that TM Volume. I'm still only back up to 20 some odd GB on the internal boot Volume, however. Will be burning a few data DVDs tomorrow... yes.gif

Perhaps the combination of excessive Directory backups causing loss of available space made the OS 'decide' to take control away from me before it was too late? Thinking.gif dntknw.gif

Moral: Read the fine print before jumping off the bridge!

Edited to correct and add some details that were fogged by my sleep deprived brain.
« Last Edit: March 20, 2010, 09:03:46 AM by Xairbusdriver »
THERE ARE TWO TYPES OF COUNTRIES
Those that use metric = #1 Measurement system
And the United States = The Banana system
CAUTION! Childhood vaccinations cause adults! :yes:

Offline jchuzi

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Almost complete loss of all disk space!!!
« Reply #1 on: March 20, 2010, 08:19:09 AM »
Jim,

In case you haven't seen these FineTunedMac links, go here and here. TTP 5.0.7 is now available and, supposedly, the problem was corrected but I haven't wanted to test it out. I have the Directory Protection feature turned off.
Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P700, Photoshop CC, Lightroom CC, MS Office 365

Offline Xairbusdriver

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Almost complete loss of all disk space!!!
« Reply #2 on: March 20, 2010, 09:09:56 AM »
I made that update last Thursday...but by then I'd turned off that backup function. I'll probably wait a few day/weeks/months before starting it again... This "event" also deleted/destroyed/erased the eDrive. Have no idea if the two events are related or not. dntknw.gif While I've had TTP way back during 8,9, I've always been a little paranoid about these kinds of utilities. I'm never sure they can/will fix a problem that some say doesn't even need fixing, especially now that OS X supposedly prevents too much disk fragmenting, etc. Of course, it doesn't help that many of these apps aren't even used until a major problem exists! And then we expect a minor miracle! laughhard.gif
THERE ARE TWO TYPES OF COUNTRIES
Those that use metric = #1 Measurement system
And the United States = The Banana system
CAUTION! Childhood vaccinations cause adults! :yes:

Offline jchuzi

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Almost complete loss of all disk space!!!
« Reply #3 on: March 20, 2010, 09:20:12 AM »
While I have TTP, I rarely use it. Instead, I rely on Disk Warrior for keeping a clean directory. DW has gotten me out of trouble many times and it has never caused a problem. I use it weekly as routine maintenance.
Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P700, Photoshop CC, Lightroom CC, MS Office 365

Offline Parker

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Almost complete loss of all disk space!!!
« Reply #4 on: March 23, 2010, 09:27:33 PM »
I'm a little confused...
Was it TechTool Pro that  grinch.gif 'd your hard drive space, or was Mac OS X the culprit??

For maintaining my disk, I use and love Drive Genius. I've only had the best of luck with ProSoft applications (absolutely LOVE DataRescue II as it has saved my . . . so many times that I have lost count!) and I would highly recommend them to anyone.

However, I have yet to 'defragment' my hard drive using DriveGenius (what the heck are we using Windows here?? **double take**). Has anybody done that yet with D.G. and if so how was the outcome?
This account isn't hacked...
I'm actually back from hiatus (and its about darn time too)!

Offline jchuzi

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Almost complete loss of all disk space!!!
« Reply #5 on: March 24, 2010, 05:58:49 AM »
I can't speak for Jim, but TTP was eating my hard drive space until I disabled its Directory Backup feature. Go to the links in my previous post for more complete information. The TTP 5.0.7 update has supposedly fixed this but I haven't tested it (and probably won't) by re-enabling that feature.
Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P700, Photoshop CC, Lightroom CC, MS Office 365

Offline Xairbusdriver

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Almost complete loss of all disk space!!!
« Reply #6 on: March 24, 2010, 01:43:11 PM »
"Directory Backup" is what did it. And I am/was using TTP 5.0.7. dntknw.gif I turned it OFF on my system. Although not on my wife's MBP, until today. Yet hers machine has reported any problems. From what I read in the links Jon provided, it appears that TTP uses a dummy file as a 'preference' or 'status' marker. If the file name ends with "(ON)" it assumes one thing. If the file name ends with "OFF" if means the opposite. Apparently, when the user changes this particular setting from ON to OFF, the "...(ON)" file is supposed to be deleted and replaced by the "...(OFF)" file. I suppose they have their reason(s) for using a dummy file like this. dntknw.gif And I may not understand what they are doing at all, maybe there is actual data in that file depending on the ending of its name. wacko.gif

Some claim there is no need to ever defrag an OS X drive. Maybe so, maybe no. With disk sectors of 4k, the drive can end up with tens of thousands of used sectors. Some apps may create dozens of these files for bits of data every time the app is used. Eventually, when a file needing several hundred sectors needs to be written, it could end up straddling many of those tiny files, not to mention the hundreds of other "normal" ones.

While OS X seems to be magnitudes better at regrouping multi-sector files, it can still happen. I don't intend to entertain an argument about that. I don't even check very often. Nor do I know the validity of the reports I get when I do. Maybe the 'checking' app shows higher numbers than it should in an attempt to justify its purchase! dntknw.gif

At any rate, the defragging had nothing to do with the loss of disk space. The space wasn't really "lost" it was simply consumed for several duplicates of humongous files! eek2.gif You could do the see the same thing by duplicating all your System folders a few times. rolleyes.gif smile.gif
« Last Edit: March 24, 2010, 01:43:42 PM by Xairbusdriver »
THERE ARE TWO TYPES OF COUNTRIES
Those that use metric = #1 Measurement system
And the United States = The Banana system
CAUTION! Childhood vaccinations cause adults! :yes: