Working with cifs on Ubuntu 14.04. How to properly mount to work with Mercurial?

Question

CIFS

I add the following line to /etc/fstab

//ip_host/yury /mnt/dev cifs uid=yury,username=***,password=***,iocharset=utf8,sec=ntlm 0 1

Everything looks good at first glance. The disk is mounted when the system boots. Files are edited, commits go through. But when it comes to hg pull, it throws 255 error - "I / O error":

[email protected]:/mnt/dev/dir$ hg pull -verbose
затягиваем из https://*******
поиск изменений
все локальные головы известны на отдаленной стороне
добавляем наборы изменений
добавляем манифесты
транзакция отменена!
откат завершен
прервано: Input/output error

With the fstab configuration, it seems that I have already tried everything that Google offers ...