No, the file is not flushed on close. https://linux.die.net/man/2/close
"A successful close does not guarantee that the data has been successfully saved to disk, as the kernel defers writes. It is not common for a file system to flush the buffers when the stream is closed. If you need to be sure that the data is physically stored use fsync <https://linux.die.net/man/2/fsync>(2). (It will depend on the disk hardware at this point.)" You can just Sync the file, to make sure this not the problem. Manlio On Monday, August 27, 2018 at 10:19:37 AM UTC+2, Paweł Szczur wrote: > > If you're asking about dmesg, I'm not seeing anything related. > Yes, I'm on linux. The dir was created successfully, I guess it was not a > problem. Also, I believe the file is flushed on Close. > > I will look into the link. > > Paweł > > On Friday, August 24, 2018 at 6:33:15 PM UTC+2, Manlio Perillo wrote: >> >> On Friday, August 24, 2018 at 4:19:17 PM UTC+2, Paweł Szczur wrote: >>> >>> Thanks. Both things you mentioned are already fixed. The MakeDir may of >>> course fail and now I handle it, but in described situation it was not an >>> issue. >>> The files were written for most of the day successfully and suddenly >>> they stopped to appear. >>> The disk was and is not full. There was no error returned by any >>> function (I've examined logs). >>> >> >> Did you checked the system/kernel logs? >> >> If you still are unable to find the cause of the problem, and assuming >> you are on an UNIX system, you can try to change the code to make sure that >> both the new directory entry, and the new file data is flushed to disk. >> For the directory entry you have to open the directory with os.OpenFile, >> passing the os.O_RDONLY|unix.O_DIRECTORY flags, and call Sync after the new >> file is created. >> >> See http://danluu.com/file-consistency/ >> >> >> Manlio >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
