Jordi Pujol <jordipujolp@xxxxxxxxx> writes: > A Dijous 19 Maig 2011 10:49:31, Miklos Szeredi va escriure: >> This file, which modifications are lost, is this on the upper >> filesystem, the lower filesystem or both, before the modification? And >> after the modification? >> >> > or when doing a big >> > upgrade of the system packages, some files are lost. >> >> How are they lost? They don't exist when they should? What's the >> contents of the upper and lower filesystems? > > in the sed case, the file exists in the lower filesystem and is copied > to tmpfs, removed and moved from tmpfs to the original file; several > times the same operations are done. Thanks for the info. So what you see as the end result is the same as the original lower file? Or there's a file on the upper filesystem which contains old data? > in the package upgrade, the file > does not exists, it is created on tmpfs and moved to the final > overlayfs directory; after we can check that it does not exist there. Does it exist on the upper filesystem? > As I thinked previously, the common operation that appears in both processes > and maybe the cause of the problem is move from another filesystem to > overlayfs. "mv" between two filesystems is actually impelemented as copy+remove. Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
