Re: [gentoo-user] A little light relief from endless problems
On Mon, 2 Mar 2009 10:52:54 +, Peter Humphrey wrote: > And the other contribution, about manual mounting, is also a red > herring. If anyone thinks I contributed a hundred thousand operations > to the total, they need to spend a little time in a quiet room :-) Six manual mounts would be sufficient. -- Neil Bothwick Support bacteria - they're the only culture some people have. signature.asc Description: PGP signature
Re: [gentoo-user] A little light relief from endless problems
On Monday 02 March 2009 07:09:31 Momesso Andrea wrote: > On Sun, Mar 01, 2009 at 02:03:28PM -0500, Allan Gottlieb wrote: > > At Sun, 01 Mar 2009 17:49:36 +0100 KH wrote: > > > Peter Humphrey schrieb: > > >> As it's Sunday, here's an odd little thing. > > >> > > >> Not long ago, while booting this machine, four ext3 partitions > > >> needed checks on remount count reaching zero. They had been set to > > >> 23, 24, 25 and 26 mounts. (I didn't choose the numbers; they were > > >> allocated at the time I was creating the file system.) > > >> > > >> Now, this box does get rebooted, but hardly 23 x 24 x 25 x 26 = > > >> 358,800 times all told. At, say, two reboots per day, that would > > >> take rather a long time: a little under 500 years if my arithmetic > > >> is working. > > > > > > Hi, > > > > > > this is incorrect. 179400 mounts would be enough (24 and 26 can both > > > be divided by 2). I wasn't sure how to allow for this common factor, so I ignored it. Thanks for the clarification. And no, 250 years is not a lot more credible than 500! So you might say my error was not significant. > > Correct. I erred in saying that 23,24,25,26 are relatively prime as > > you noted. In general if it was a1,a2,...an the answer would be > > LCM(a1,a2,...,an), where LCM abbreviates Least Common Multiple. > > > > allan Nicely put. > What about battery? If that's a laptop checks are deferred if running on > battery at boot time, so it can happen that all the partitions are > fscked the first time you boot on AC. It isn't a laptop. It's an ordinary desktop box (or a workstation, depending on your point of view: it was sold as a workstation - and it certainly makes enough noise for one). And the other contribution, about manual mounting, is also a red herring. If anyone thinks I contributed a hundred thousand operations to the total, they need to spend a little time in a quiet room :-) -- Rgds Peter
Re: [gentoo-user] A little light relief from endless problems
On Sun, Mar 01, 2009 at 02:03:28PM -0500, Allan Gottlieb wrote: > At Sun, 01 Mar 2009 17:49:36 +0100 KH wrote: > > > Peter Humphrey schrieb: > >> As it's Sunday, here's an odd little thing. > >> > >> Not long ago, while booting this machine, four ext3 partitions needed > >> checks > >> on remount count reaching zero. They had been set to 23, 24, 25 and 26 > >> mounts. (I didn't choose the numbers; they were allocated at the time I > >> was > >> creating the file system.) > >> > >> Now, this box does get rebooted, but hardly 23 x 24 x 25 x 26 = 358,800 > >> times all told. At, say, two reboots per day, that would take rather a > >> long > >> time: a little under 500 years if my arithmetic is working. > >> > >> > > Hi, > > > > this is incorrect. 179400 mounts would be enough (24 and 26 can both be > > divided by 2). > > Correct. I erred in saying that 23,24,25,26 are relatively prime as you > noted. In general if it was a1,a2,...an the answer would be > LCM(a1,a2,...,an), where LCM abbreviates Least Common Multiple. > > allan What about battery? If that's a laptop checks are deferred if running on battery at boot time, so it can happen that all the partitions are fscked the first time you boot on AC. === TopperH === pgpnTYmcI1rwJ.pgp Description: PGP signature
Re: [gentoo-user] A little light relief from endless problems
At Sun, 01 Mar 2009 17:49:36 +0100 KH wrote: > Peter Humphrey schrieb: >> As it's Sunday, here's an odd little thing. >> >> Not long ago, while booting this machine, four ext3 partitions needed checks >> on remount count reaching zero. They had been set to 23, 24, 25 and 26 >> mounts. (I didn't choose the numbers; they were allocated at the time I was >> creating the file system.) >> >> Now, this box does get rebooted, but hardly 23 x 24 x 25 x 26 = 358,800 >> times all told. At, say, two reboots per day, that would take rather a long >> time: a little under 500 years if my arithmetic is working. >> >> > Hi, > > this is incorrect. 179400 mounts would be enough (24 and 26 can both be > divided by 2). Correct. I erred in saying that 23,24,25,26 are relatively prime as you noted. In general if it was a1,a2,...an the answer would be LCM(a1,a2,...,an), where LCM abbreviates Least Common Multiple. allan
Re: [gentoo-user] A little light relief from endless problems
Peter Humphrey schrieb: > As it's Sunday, here's an odd little thing. > > Not long ago, while booting this machine, four ext3 partitions needed checks > on remount count reaching zero. They had been set to 23, 24, 25 and 26 > mounts. (I didn't choose the numbers; they were allocated at the time I was > creating the file system.) > > Now, this box does get rebooted, but hardly 23 x 24 x 25 x 26 = 358,800 > times all told. At, say, two reboots per day, that would take rather a long > time: a little under 500 years if my arithmetic is working. > > Hi, this is incorrect. 179400 mounts would be enough (24 and 26 can both be divided by 2). Have you been running gentoo for 250 years? ;-) Maybe your counts are incorrect in another way. Let's say you install your system. You create root partition and install, reboot. Than you install all the other partitions. Maybe something went wrong and you needed to remount partition 4 four times ... Hope this helped a little. kh
[gentoo-user] A little light relief from endless problems
As it's Sunday, here's an odd little thing. Not long ago, while booting this machine, four ext3 partitions needed checks on remount count reaching zero. They had been set to 23, 24, 25 and 26 mounts. (I didn't choose the numbers; they were allocated at the time I was creating the file system.) Now, this box does get rebooted, but hardly 23 x 24 x 25 x 26 = 358,800 times all told. At, say, two reboots per day, that would take rather a long time: a little under 500 years if my arithmetic is working. -- Rgds Peter
