June 2004 - Darwin-kernel - lists.apple.com

Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by Brian Bergstrand 11 Jun '04

11 Jun '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dan, The UUID/fstab setup has worked for me since 10.3.x. I have four volumes setup this way to mount on /Users, /usr/local and too disable auto-mounting for the other two UUID=xxxxxxxxxxxxxxxx /usr/local hfs rw 0 2 UUID= xxxxxxxxxxxxxxxx /Users hfs rw 0 2 UUID= xxxxxxxxxxxxxxxx /Volumes/Data hfs rw,noauto 0 2 UUID= xxxxxxxxxxxxxxxx /Volumes/Users hfs rw,noauto 0 2 The trick is, that you have to duplicate this info in NetInfo /mounts for it to actually work. Then use nidump to create the fstab file: sudo nidump fstab / > /etc/fstab Now that the info is in both fstab and NetInfo things work fine on 10.3.x (and 10.2.x). It would be nice if NetInfo didn't need a copy, but that's no big deal. Is that the oversight you were talking about? On Jun 11, 2004, at 8:18 AM, Dan Markarian wrote: > Hi Richard, > > It is not that startup is not waiting for that volume, rather it is > that we chose we not to mount it until you log in. The volume is on a > disk marked external, which on a Client install, does not get mounted > until someone logs in. You should be seeing it mount at boot on a > Server install just fine, by contrast. > > There are two ways to have it mount at boot. The first one, also the > ideal one, is unfortunately not working in 10.3.x due to an oversight > on our part. I mention it only for future reference. It would be to > list the volume in question by UUID in /etc/fstab along with the "auto" > option. This would override any default. > > Brian Bergstrand <http://www.bergstrand.org/brian/>, AIM: triryche206 PGP Key: <http://www.bergstrand.org/brian/misc/public_key.txt> If all the world's a stage, I want to operate the trap door. - Paul Beatty As of 10:55:00 AM, iTunes is playing "Ballerina" from "Passion And Warfare" by "Steve Vai" -----BEGIN PGP SIGNATURE----- Version: PGP 8.0.3 iQA/AwUBQMnJunnR2Fu2x7aiEQJTrACfXPEojq+aaV4/kgN11UMHJAL8tHQAnA+d 9FLSn+sqP6dxVMETLTqLGnu4 =rDJJ -----END PGP SIGNATURE----- _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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RESOLVED! ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by OpenMacNews 11 Jun '04

11 Jun '04

dan, My alternative would be to create the preference file in /Library/Preferences/SystemConfiguration/ com.apple.DiskArbitration.diskarbitrationd.plist with this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd"> <plist version="0.9"> <dict> <key>DAMountDeferExternal</key> <false/> </dict> </plist> this, for now, seems to have worked ! yay! system.log tells me that all drives mount on first 'try', no failures of SystemStarter are evident, and my til-now-errant services are up-n-running! marry me! ;o thanks a million! richard _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by OpenMacNews 11 Jun '04

11 Jun '04

hi dan, Hi Richard, It is not that startup is not waiting for that volume, rather it is that we chose we not to mount it until you log in. The volume is on a disk marked external, which on a Client install, does not get mounted until someone logs in. You should be seeing it mount at boot on a Server install just fine, by contrast. ah. i understand the choice as a default for Client, but would prefer to see an 'option' to change it ... There are two ways to have it mount at boot. The first one, also the ideal one, is unfortunately not working in 10.3.x due to an oversight on our part. I mention it only for future reference. It would be to list the volume in question by UUID in /etc/fstab along with the "auto" option. This would override any default. re: "future reference" ... i assume you mean that fstab in not currently being used/checked, not that it currently/default is simply empty. yes? My alternative would be to create the preference file in /Library/Preferences/SystemConfiguration/com.apple.DiskArbitration.diskarbitrationd.plist with this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd"> <plist version="0.9"> <dict> <key>DAMountDeferExternal</key> <false/> </dict> </plist> this looks simple enuf, i'll give it a try! question: where would I find the specification of this key value documented? its certainly eluded me to date ... thanks! richard _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by OpenMacNews 11 Jun '04

11 Jun '04

are you saying that NO service to be launched at Startup can have any of its config, or other, data (/etc, /usr/, or anywhere else) on any drive OTHER than the boot drive? OK, my bad, I indeed got confused. i need to specify *my* issue better .... sorry! Let's clarify the thing a bit: No service mandatory to *boot* the machine should have any of its file outsid the boot drive. that's clear. Now, of course, you can have supplementary daemons loading from /usr for instance, /usr being a separate partition. and, i suppose, as well if /usr were the *same* partition, but config files for a non-boot-required-service were on _another_ partition ... the real issue is *how* to prevent SystemStarter trying to start up any services until drives have finished mounting. Understood. Looks like you're running 10.3, and I'm still stuck to 10.2, so I guess I won't be of any help here. yes, i'm on 10.3.4 ... There have been a couple of hugly hacks with 10.2 (take a look at this forum thread for instance: http://www.mac-forums.com/forums/showthread.php?t=129) but they weren't "clean". Basically, the idea was to force mount the mandatory volume (if not all, using "mount -a") in the startup scripts. informative ... thx! That kind of problem you're hitting is the reason why I've been pesting alot against the autodiskmount system and decided to get a properly sized "/" to work around the problem, so I never fought hard to find a proper fix, shame. :P i've fallen into the habit of keeping my <8GB ('legacy' decision ...) boot partition, _assuming_ that eventually i'll have to reinstall, and keeping it as 'virgin' as possible, with all (or as many as possible ...) my 'tweaks' farmed off to other drives/partitions for recovery's sake I never use autodiskmount thingies on my other *NIX boxes because it's usually a source of troubles and it deprives you from fine tuning, IMHO. But heh, we want a user friendly system, don't we ? ;o) :p thanks! =) richard _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by Dan Markarian 11 Jun '04

11 Jun '04

Hi Richard, It is not that startup is not waiting for that volume, rather it is that we chose we not to mount it until you log in. The volume is on a disk marked external, which on a Client install, does not get mounted until someone logs in. You should be seeing it mount at boot on a Server install just fine, by contrast. There are two ways to have it mount at boot. The first one, also the ideal one, is unfortunately not working in 10.3.x due to an oversight on our part. I mention it only for future reference. It would be to list the volume in question by UUID in /etc/fstab along with the "auto" option. This would override any default. My alternative would be to create the preference file in /Library/Preferences/SystemConfiguration/ com.apple.DiskArbitration.diskarbitrationd.plist with this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd"> <plist version="0.9"> <dict> <key>DAMountDeferExternal</key> <false/> </dict> </plist> Dan On Jun 11, 2004, at 4:24 AM, OpenMacNews wrote: > Thibaut, > >> This is completely wrong, from a UNIX point of view. >> "/etc" (or anything under "/etc") has never meant to be put aside >> "/", and whatever UNIX OS you use, if you want to do this it's both >> risky and tricky. >> >> I suggest you take a look at Google searching for "/etc on separate >> partition", you'll see various explanations about why it's wrong. >> >> Basically, /etc contains the early startup scripts, and putting /etc >> anywhere else than "/" (or even part of it) would be equally as >> dangerous as putting parts of "/sbin" on another partition. >> >> These are parts of the core files needed to boot so they have to be on >> the same disk. That's why they're so compact (disk space), and that's >> why there is a "/usr"... > > hi, > > that may well be the wisdom for "/etc". so let's take that particular > dir out of the equation ... > > my example seems to have confused matters, and folks are focusing on > the "/etc" usage, rather than the disks-not-mounting issue ... > > are you saying that NO service to be launched at Startup can have any > of its config, or other, data (/etc, /usr/, or anywhere else) on any > drive OTHER than the boot drive? > > i'd honestly be surprised if that is the case ... > > if not, then the problem is, per my example, how to get SystemStarter > to *DELAY* trying to launch any/those services UNTIL diskarbitrationd > has VERIFIED that all drives have finished mounting ... > > the real issue is *how* to prevent SystemStarter trying to start up > any services until drives have finished mounting. > >> Hi, >> >> are you starting Postfix from /System/Library/StartupItems ? >> >> Have you tried moving it into /Library/StartupItems ? >> >> Not sure if it will make a difference, it is far too early to >> remember what kicks what off >> >> Let me know how you get on, and when I'm more awake I might have a >> better solution :) > > Sam, > > Its not any issue of WHICH service, or in which path, rather, as > above, its the wait-for-the-drives thing ... > > richard > _______________________________________________ > darwin-kernel mailing list | darwin-kernel(a)lists.apple.com > Help/Unsubscribe/Archives: > http://www.lists.apple.com/mailman/listinfo/darwin-kernel > Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by OpenMacNews 11 Jun '04

11 Jun '04

Thibaut, This is completely wrong, from a UNIX point of view. "/etc" (or anything under "/etc") has never meant to be put aside "/", and whatever UNIX OS you use, if you want to do this it's both risky and tricky. I suggest you take a look at Google searching for "/etc on separate partition", you'll see various explanations about why it's wrong. Basically, /etc contains the early startup scripts, and putting /etc anywhere else than "/" (or even part of it) would be equally as dangerous as putting parts of "/sbin" on another partition. These are parts of the core files needed to boot so they have to be on the same disk. That's why they're so compact (disk space), and that's why there is a "/usr"... hi, that may well be the wisdom for "/etc". so let's take that particular dir out of the equation ... my example seems to have confused matters, and folks are focusing on the "/etc" usage, rather than the disks-not-mounting issue ... are you saying that NO service to be launched at Startup can have any of its config, or other, data (/etc, /usr/, or anywhere else) on any drive OTHER than the boot drive? i'd honestly be surprised if that is the case ... if not, then the problem is, per my example, how to get SystemStarter to *DELAY* trying to launch any/those services UNTIL diskarbitrationd has VERIFIED that all drives have finished mounting ... the real issue is *how* to prevent SystemStarter trying to start up any services until drives have finished mounting. Hi, are you starting Postfix from /System/Library/StartupItems ? Have you tried moving it into /Library/StartupItems ? Not sure if it will make a difference, it is far too early to remember what kicks what off Let me know how you get on, and when I'm more awake I might have a better solution :) Sam, Its not any issue of WHICH service, or in which path, rather, as above, its the wait-for-the-drives thing ... richard _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by Thibaut VARENE 11 Jun '04

11 Jun '04

> Date: Thu, 10 Jun 2004 12:57:13 -0700 > From: OpenMacNews <darwin-kernel.20.openmacnews(a)spamgourmet.com> > Reply-To: OpenMacNews darwin-kernel.20.openmacnews(a)spamgourmet.com> > To: Darwin Kernel List <darwin-kernel(a)lists.apple.com> > Subject: ?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ?? > > hi, > > i've moved some of the dirs in my /etc hierarchy (e.g. /etc/postfix) off my > startup partition (mac7_OSX) to a second drive (mac7_LOCAL/etc/postfix). > > i've then symlinked the dirs from the mac7_LOCAL back to the startup > drive, i.e.: [...] This is completely wrong, from a UNIX point of view. "/etc" (or anything under "/etc") has never meant to be put aside "/", and whatever UNIX OS you use, if you want to do this it's both risky and tricky. I suggest you take a look at Google searching for "/etc on separate partition", you'll see various explanations about why it's wrong. Basically, /etc contains the early startup scripts, and putting /etc anywhere else than "/" (or even part of it) would be equally as dangerous as putting parts of "/sbin" on another partition. These are parts of the core files needed to boot so they have to be on the same disk. That's why they're so compact (disk space), and that's why there is a "/usr"... HTH, Thibaut VARENE The PA/Linux ESIEE Team http://www.pateam.org/ _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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?? how to get SystemStarter/diskarbitrationd to wait for drives to mount ??
by OpenMacNews 10 Jun '04

10 Jun '04

hi, i've moved some of the dirs in my /etc hierarchy (e.g. /etc/postfix) off my startup partition (mac7_OSX) to a second drive (mac7_LOCAL/etc/postfix). i've then symlinked the dirs from the mac7_LOCAL back to the startup drive, i.e.: ln -s /Volumes/mac7_LOCAL/etc/postfix /etc/postfix unfortunately, SystemStarter doesn't seem to wait for the /etc/mach_init.d/diskarbitrationd to have mounted all the drives ... and, hence, StartupItems that depend on the files on the as-yet-unmounted-drive fail to properly start. THEN, the drive eventually mounts. here are the relevant snips from system.log for an example with postfix (the same happens for any/all other services that i've moved the startup files for ...): Jun 10 12:26:27 localhost SystemStarter: Starting Apple Multicast DNS Responder Jun 10 12:26:28 localhost SystemStarter: Starting timed execution services Jun 10 12:26:28 localhost ConsoleMessage: Checking disks Jun 10 12:26:28 localhost SystemStarter: Checking disks Jun 10 12:26:28 localhost diskarbitrationd[90]: disk1s6 hfs 4BD26F67-3ECC-36BD-B368-EC49C60E256C mac7_OSX / Jun 10 12:26:29 localhost mDNSResponder[192]: mDNSResponder-58.8 (Apr 24 2004 20:38:40) starting Jun 10 12:26:29 localhost diskarbitrationd[90]: disk2s9 hfs 4ACCCB5F-C7AE-31AB-B28C-75499DB23FCD mac7_LOCAL [not mounted] ... Jun 10 12:26:47 localhost postfix[320]: fatal: open /etc/postfix/main.cf: No such file or directory ... Jun 10 12:26:55 localhost SystemStarter: The following StartupItems failed to properly start: Jun 10 12:26:55 localhost SystemStarter: /Library/StartupItems/Postfix Jun 10 12:26:55 localhost SystemStarter: - execution of Startup script failed Jun 10 12:26:55 localhost SystemStarter: Jun 10 12:26:55 localhost SystemStarter: Login Window starting ... Jun 10 12:27:08 localhost diskarbitrationd[90]: disk2s9 hfs 4ACCCB5F-C7AE-31AB-B28C-75499DB23FCD mac7_LOCAL /Volumes/mac7_LOCAL once the Mac has completely booted up, I can start postfix (e.g., or, for that matter, any other service) with no problem. how do i get the system -- i presume SystemStarter? -- to wait until all drives are properly mounted before running startup items? i'm wondering if setting my services up as "Bootstrap Daemons" is appropriate here - but I've not found much in the way of documentation about dependency ordering for them (yet). thoughts/suggestions? thanks! richard _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: file sync on close(2)
by Jay A. Kreibich 08 Jun '04

08 Jun '04

On Tue, Jun 08, 2004 at 11:25:55AM +0200, Markus Hitter scratched on the wall: > Am 08.06.2004 um 06:56 schrieb Jay A. Kreibich: > > >So my thought is to modify the UPS scripts to "almost" shut the > >machine down, and then just let the power fail. > If my iBook's battery goes low it does a force sleep. Even with almost > empty batteries, the state of the machine can be hold for more than a > day until it goes off completely. If you force sleep with a full UPS, > sleeping the machine for several weeks shouldn't be a problem. You're assuming the machine is the only thing plugged into the UPS. It isn't. There's some networking gear and monitoring hardware also connected. If we put the server to sleep (interesting idea!) that would only buy 30 to 40 minutes. I suppose we could get a second UPS for just the computer, but that seems excessive. The need to go this long is rare, so we're OK with the machine going down. I just want it to come back without having to press the power button. Regardless, there's also an issue with how to wake the machine back up. Wake-on-LAN might work, but you would need to actively monitor the situation and send packets, but not before you're sure the UPS has recovered. That's messy and tricky. Also, if we're in a situation where the power is likely to have failed (e.g. thunderstorm) the networking out there is less than ideal, and is likely to have been effected. That's part of the reason for the machine out there-- it can spool data and deliver it when we've got a good connection. Believe me, I know this situation is far from ideal, but it works well enough. I just wanted to try to cover all our bases with the UPS. There have been times when the system was down longer waiting for someone to drive out there and press the power button than it was out because of loss of power. > Unless the Power Manager is buggy, he should do all the syncing for you. I wouldn't assume the sleep flushes the file system. I suppose it wouldn't be a bad idea for the force-sleep, but the it would slow down the standard sleep quite a bit. Besides, that's only half the issue. The software we have will correctly deal with a SIGHUP to shut itself down gracefully, but would be unhappy to go to sleep and then (maybe) loose power. Putting the machine to sleep changes the game a bit, but you still have the risk of loosing power. -j -- Jay A. Kreibich | Integration & Software Eng. jak(a)uiuc.edu | Campus IT & Edu. Svcs. <http://www.uiuc.edu/~jak> | University of Illinois at U/C _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: file sync on close(2)
by Adrian Bool 08 Jun '04

08 Jun '04

Greetings, On 8 Jun 2004, at 11:25, Markus Hitter wrote: Unless the Power Manager is buggy, he should do all the syncing for you. No need to close files just because power is low. No need to reboot the machnie at all. That is not my experience though. I have a USB pen drive that I tend to plug into my Apple keyboard that hangs off the back of my powerbook. On more than one occasion I have just disconnect the keyboard (and hence the USB pen drive) whist the powerbook is asleep. When the PB wakes up it complains about the lack of USB Drive - fair enough. But on re-inserting the USB drive one two occasions it could not be read by the mac at all - in the end I needed to plug it into a PC to reformat it... It would be nice if as part of a sleep all files were synced and the drives were left in a tidy state... Cheers, aid _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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