Max, what do you think will be a proper fix for this? I cannot see if this is a vm problem or not.
Norbert > Am 14.07.2018 um 08:25 schrieb Max Leske <[email protected]>: > > Hi Nicolas, > > The PR you are referring [1] to concerns a missing fflush() when truncating a > file. I believe that is a different case to this one, as a) the file is not > truncated and b) in the case of truncation it is an explicit requirement that > the file be empty before the first write happens. In our case, and in > general, it depends on the situation whether flushing must occur immediately, > e.g. because the file will be read again immediately, or not, e.g. when > writing a data to a backup file. > > Thanks for the pointer though. > > > Cheers, > Max > > > [1] https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/271 > >> On 12 Jul 2018, at 23:19, Nicolas Cellier wrote: >> >> Isn't there a recent PR on opensmalltalk that address just this? >> >>> Le jeu. 12 juil. 2018 à 23:16, Max Leske <[email protected]> a écrit : >>> >>> Hi Norbert, >>> >>> I was able to reproduce the problem and then identify the culprit, >>> although what I don't yet understand is how this is related to the changes >>> in Zinc. >>> >>> Anyway, the problem is that the file stream isn't properly flushed in >>> ZnUtils class>>streamFrom:to:size:. Adding outputStream flush as the last >>> statement fixes your problem. Apparently, StandardFileStream / >>> MultiByteFileStream perform a simple close() on the file which, according >>> to the man page on close(), does *not* guarantee that the contents have >>> all been written to file. In this case a flush is necessary because the >>> entire file is immediately read again. >>> >>> Here's a smaller test case for you to play with Sven: >>> >>> ZnClient new >>> url: 'https://github.com/zweidenker/Parasol/archive/master.zip'; >>> downloadTo: '/tmp/foobar.zip'. >>> bytes := '/tmp/foobar.zip' asFileReference binaryReadStreamDo: [ :s | s >>> contents ]. >>> Transcript open; show: bytes size; cr. >>> 5 seconds asDelay wait. >>> Transcript show: ('/tmp/foobar.zip' asFileReference binaryReadStreamDo: [ >>> :s | s contents ]) size. >>> >>> The output in the Transcript should be: >>> >>> 315392 >>> 318420 >>> >>> Cheers, >>> Max >>> >>> On 12 Jul 2018, at 8:17, Norbert Hartl wrote: >>> >>> Am 12.07.2018 um 08:05 schrieb Max Leske [email protected]: >>> >>> On 11 Jul 2018, at 22:44, Norbert Hartl wrote: >>> >>> Hi Max, >>> >>> I constructed a case that fails exactly like I experience it. Could you >>> try? Just unpack the attachment on a linux, set PHARO_VM env to your >>> executable and execute build.sh >>> >>> I will. Might take a couple of days though. >>> >>> No problem. I‘m happy if you find time. >>> >>> Norbert >>> >>> Max >>> >>> Norbert >>> >>> Am 10.07.2018 um 09:17 schrieb Max Leske [email protected]: >>> >>> On 10 Jul 2018, at 8:48, Norbert Hartl wrote: >>> >>> Max, >>> >>> thanks for taking the effort. >>> >>> No worries. >>> >>> Am 10.07.2018 um 08:37 schrieb Max Leske [email protected]: >>> >>> I did my best to reproduce the issue but didn't have any luck. I really >>> need access to a Linux VM to debug this. So I'm praying that Apple fixes >>> the access restrictions to kernel extensions in their next beta... >>> >>> BTW, Metacello uses ZnClient, which uses ZnFileSystemUtils, so there is >>> indeed a chance that something goes wrong during download of the zip >>> archive and that something may be tied to a difference in the versions of >>> Zinc (although I still think that's unlikely). >>> >>> Yes there is potential but I don‘t see it. I take a fresh 6.1 image and >>> load my project into. I‘m not sure but I think zinc 2.9.2 is loaded rather >>> early in that process. So I wonder why it does not go wrong in the first >>> phase. And also not if I load the test group within the first phase. >>> It must be either the second Metacello invocation or the stopping, copying >>> and starting of the image. >>> I try to isolate this case more and provide a script that goes wrong on my >>> machine. But it will take some time because I needed to stop trying to >>> solve this as I wasted nearly two days on that already. >>> >>> Let me know once you have something and I'll try to help out. >>> >>> Norbert >>> >>> Max >>> >>> On 9 Jul 2018, at 19:43, Norbert Hartl wrote: >>> >>> Am 09.07.2018 um 19:10 schrieb Max Leske [email protected]: >>> >>> I checked the Parasol Archive and it does not appear to be in Zip64 format >>> (Metacello uses ZipArchive which can't cope with Zip64 but ZipArchive can >>> read the Parasol zip). So my next guess is that there's either a problem >>> with Metacello or Pharo in the way that ZipArchive is used (e.g. endianness >>> problem or non-binary stream data). It would therefore be helpful to find >>> out what happens in ZipArchive>>readFrom:, i.e. what kind of stream is >>> passed / opened, is it binary, does the file exist and is it still the >>> correct file. >>> >>> I couldn’t see anything obvious. The file in the debug message exists, it >>> is a readable zip file. The way Metacello uses it it is a >>> StandardFileStream. It switches it to binary in the code. >>> But the only difference between a working and non-working build is the >>> upgrade to zinc 2.9.2. >>> >>> Norbert >>> >>> I'd debug it myself but I can't run VirtualBox at the moment because I'm >>> on the macOS beta and it won't start... >>> >>> Max >>> >>> On 9 Jul 2018, at 18:31, Norbert Hartl wrote: >>> >>> Hi Max, >>> >>> Am 09.07.2018 um 18:18 schrieb Max Leske [email protected]: >>> >>> Hi Norbert, >>> >>> This is a bit of a guess, but it's possible that the archive that is >>> downloaded from github is in Zip64 format and that the libraries for >>> extracting Zip64 are missing on your Linux. That would of course contradict >>> the experience that the same operation appears to work in 6.1. >>> >>> to be honest I don’t know what Zip64 format is. I thought the Zip classes >>> are pure smalltalk for unpacking. >>> >>> Try extracting the archive manually on your Linux machine with the same >>> method that Metacello uses (I assume, Metacello uses the ZipPlugin, which >>> will probably use the system libraries). >>> >>> I have no ZipPlugin as library in any of my vms. >>> >>> But there are zips downloaded and unpacked. I start the image the first >>> time loading all the code of my project. Then it is saved, copied to a new >>> name and reopened to load the tests and then it fails. I did try to load >>> the tests in the first run and then it works. >>> >>> I’m running out of ideas >>> >>> thanks, >>> >>> Norbert >>> >>> Cheers, >>> Max >>> >>> On 9 Jul 2018, at 17:14, Norbert Hartl wrote: >>> >>> With the help of Esteban I got one step further. If I do >>> >>> MCWorkingCopy >>> managersForClass: ZnFileSystemUtils >>> do: [ :each | each ancestry initialize ] >>> >>> before loading my project it updates Zinc-FileSystem as well. Sadly it >>> still does not work for me because I get >>> >>> Loading baseline of BaselineOfMobilityMap... >>> ...RETRY->BaselineOfParasol >>> ...RETRY->BaselineOfParasol[31mError: can't find EOCD position >>> >>> and I don’t know why. zip file is downloaded from github and present but >>> it fails and only on my jenkins on linux. On my Mac this works. >>> >>> I try a few things but then I’m back on pharo6.1 for the time being :( >>> >>> Norbert >>> >>> Am 07.07.2018 um 13:28 schrieb Norbert Hartl [email protected]: >>> >>> Really? I thought the same but then I didn’t believe it works like that. >>> >>> Anyway this would be very easy to solve. We just need to ask Sven if he is >>> fine with doing an empty .16 version for Zinc-FileSystem and does an >>> in-place version reset of 2.9.2 or a new 2.9.3. I’m not fully convinced >>> that will solve it but the cost won’t be very high. >>> >>> Norbert >>> >>> Am 07.07.2018 um 13:22 schrieb Cyril Ferlicot [email protected]: >>> >>> Need to investigate more. There are two .15 versions but there is 1 year >>> in between (if you didn’t notice TheIntegratior.15 is from 2017). Just want >>> to have more context information because I can only see that this is >>> strange but lacking insight. >>> >>> I’m trying to figure out why it does not update Zinc-FileSystem. No matter >>> what I do I cannot get Metacello to load the newer package. That would fix >>> the issue because I’m loading 2.9.2 which should have >>> Zinc-FileSystem-SVC.15 and not stay on the one included in the image. >>> >>> I think this is important for everyone that has a product based on 6.1 and >>> that want to migrate someday to pharo7. This way it is impossible to do it >>> step by step. >>> >>> If there is a package .15 in the image and a package .15 in the repo, I >>> think Metacello will not update because it rely on the numbers to know when >>> to update. If it find a .15 and currently have a .15 I think Metacello will >>> think they are at the same version. >>> >>> Norbert >>> >>> -- >>> Cyril Ferlicot >>> https://ferlicot.fr >>> >>> > > >
