The following is from github:help, https://help.github.com/articles/what-is-my-disk-quota:
my question is what will happen if the size of repo exceeds 1GB, what may happen if I don't reduce its size? (That is i just ignore that polite email, and can I push more files to my repo if the size of my repo exceeds 1GB)
GitHub doesn't have any set disk quotas. We try to provide abundant storage for all Git repos, within reason. Keeping repos small ensures that our servers are fast and downloads are quick for our users.
Rule of thumb: 1GB
For best performance, we recommend repositories be kept under 1GB each. This limit is easy to stay within if large files (typically, binaries) are kept out of the repo. If your repository exceeds 1GB, you might receive a polite email from support requesting that you reduce the size of the repository to bring it back down under 1GB.
This issue is not the same as How to reduce the size of a repo on Github
Also I know google code's limit on space quota is 4GB, what may happen if the size exceeds 4GB?
One more question, what is the disk usage quota of one repo for bitbucket?
