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Re: Possible issue with newest version of git (v 2.8) under Cygwin


If I change my fstab back so that it does not include the noacl option
on the line the merge is much faster:

15:51:22.288607 git.c:350               trace: built-in: git 'merge'
'FETCH_HEAD' Updating 154cf50..a0f35eb
Fast-forward
15:55:18.347594 run-command.c:336       trace: run_command: 'gc' '--auto'

So it is clear that my fix for the Windows permissions is causing the
merge to take a very long time.


On 9 May 2016 at 14:34, andrew stern <astern.fix8.forum@gmail.com> wrote:
> Recently I upgraded to version 2.8.0 of git on cygwin.  Iâm running
> under Windows 2008 R2.  Before this upgrade we were able to share a
> NFS drive as a main repository.  After the upgrade the permissions
> were changed so that only a single person had write access to the
> repository on a shared NFS drive.  When the push is done to the NFS
> drive these permissions cause deny write access to the other users of
> the repository so we couldnât update the sha1 of the head reference.
> An example of the incorrect permissions are:
>
>
> Allow     User                         Special            not
> inherited      This folder only
> Allow     dev                          Special            not
> inherited     This folder only
> Allow     Everyone                     Read & execute     not
> inherited      This folder, subfolders and
> Allow     Administators for machine    Special            not
> inherited      This folder only
> Allow     SYSTEM                       Special            not
> inherited      This folder only
> Allow     Users for machine            Special            not
> inherited      This folder only
> Allow     CREATOR OWNER                Special            not
> inherited     Subfolders and files only
> Allow     CREATOR GROUP                Special            not
> inherited     Subfolders and files only
>
> But the Windows permissions should have been inherited only.  Also not
> the group dev is not in the list.  The permissions after a push showed
> dev on the shared NFS drive along with errors that the permissions
> were out of order.
>
> Allow     Administators           Full Control       D:\  This folder,
> subfolders and
> Allow     SYSTEM                  Full Control       D:\  This folder,
> subfolders and
> Allow     User                    Special            D:\  This folder only
> Allow     CREATOR OWNER           Special            D:\  Subfolders
> and files only
> Allow     User on Machine         Read & execute     D:\  This folder,
> subfolders and
> Allow     User on Machine         Special            D:\  This folder,
> subfolders
>
>
> After searching through new groups and the web it was decided to add
> noacl to the fstab for the cygwin mount:
>
> none /cygdrive cygdrive binary,posix=0,user,noacl 0 0
>
> Now we are finding that the git merge onto our local drive after a
> fetch from the NFS shared repository is taking a very long time.
> (shown with >> in front on below line)
>
> $ git pull origin MCSTRATEGY_4_4
> 13:01:16.587064 git.c:351               trace: built-in: git 'pull'
> 'origin' 'MCSTRATEGY_4_4'
> 13:01:16.752064 run-command.c:336       trace: run_command: 'fetch'
> '--update-head-ok' 'origin' 'MCSTRATEGY_4_4'
> 13:01:16.790064 exec_cmd.c:120          trace: exec: 'git' 'fetch'
> '--update-head-ok' 'origin' 'MCSTRATEGY_4_4'
> 13:01:16.821064 git.c:351               trace: built-in: git 'fetch'
> '--update-head-ok' 'origin' 'MCSTRATEGY_4_4'
> 13:01:17.069064 run-command.c:336       trace: run_command:
> 'git-upload-pack
> '\''/cygdrive/s/StrategyServers/git/gitbmssorsrc.git/.'\'''
> 13:01:17.136064 run-command.c:195       trace: exec: '/bin/sh' '-c'
> 'git-upload-pack
> '\''/cygdrive/s/StrategyServers/git/gitbmssorsrc.git/.'\'''
> 'git-upload-pack
> '\''/cygdrive/s/StrategyServers/git/gitbmssorsrc.git/.'\'''
> 13:01:18.084064 run-command.c:336       trace: run_command: 'rev-list'
> '--objects' '--stdin' '--not' '--all' '--quiet'
> 13:01:18.229064 run-command.c:336       trace: run_command: 'rev-list'
> '--objects' '--stdin' '--not' '--all'
> 13:01:18.284064 exec_cmd.c:120          trace: exec: 'git' 'rev-list'
> '--objects' '--stdin' '--not' '--all'
> 13:01:18.314064 git.c:351               trace: built-in: git
> 'rev-list' '--objects' '--stdin' '--not' '--all'
> From /cygdrive/s/StrategyServers/git/gitbmssorsrc.git/.
>  * branch            MCSTRATEGY_4_4 -> FETCH_HEAD
> 13:01:18.367064 run-command.c:952       run_processes_parallel:
> preparing to run up to 1 tasks
> 13:01:18.373064 run-command.c:984       run_processes_parallel: done
> 13:01:18.375064 run-command.c:336       trace: run_command: 'gc' '--auto'
> 13:01:18.410064 exec_cmd.c:120          trace: exec: 'git' 'gc' '--auto'
> 13:01:18.440064 git.c:351               trace: built-in: git 'gc' '--auto'
> 13:01:18.454064 run-command.c:336       trace: run_command: 'merge' 'FETCH_HEAD'
> 13:01:18.486064 exec_cmd.c:120          trace: exec: 'git' 'merge' 'FETCH_HEAD'
>>> 13:01:18.517064 git.c:351               trace: built-in: git 'merge' 'FETCH_HEAD'
> Updating 9c40e07..a0f35eb
> Fast-forward
> 13:18:39.432839 run-command.c:336       trace: run_command: 'gc' '--auto'
> 13:18:43.559539 exec_cmd.c:120          trace: exec: 'git' 'gc' '--auto'
> 13:18:43.623539 git.c:351               trace: built-in: git 'gc' '--auto'
>  file.cpp | 5 +++--
>
> First question is could this very large delay on git merge be caused
> by the noacl?  If noacl is causing this very large delay (which I
> suspect to be the case since we didnât have this large delay till the
> noacl was added) is there another way to fix the permission issue when
> using an NFS drive as a shared repository?

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