git can t push unpacker error related to permission issues

Question

I have this problem when i try to push in git   error  insufficient permission for adding an object to repository database   objects  fatal  failed to write object error  unpack failed  unpack-objects abnormal exit To ssh    lt repo url gt   lt repo dir gt      remote rejected  master - gt  master  n a  unpacker error   error  failed to push some refs to  ssh    lt repo url gt   lt repo dir gt     I ve had this before sporadically and we ve always had to solve it by each user sshing to the repo and setting group permissions on all the files therein with   chmod -R g w     This was never a satisfactory solution and now it s bitten us in the arse as one of the guys is away and no-one knows his repo user s password   So  i m trying to solve it properly     The error seems to occur when someone tries to push up a change that will alter a repo dir that is owned by another user  hence setting the group write option above    I ve done a bit of googling around this and have found a couple of solutions being discussed  neither of which worked for me   1  make sure that the group that the repo dirs are shared with is each users  primary group  i believe that is the case already  each user has only one group so that must be their primary group  right    2  git repo core sharedRepository setting  as detailed here  Git  Can  39 t push from one computer I changed this but it didn t make any difference   Do i need to reload the config or something to actually effect the change   Here s what my repo config looks like atm    core          repositoryformatversion   0         filemode   true         bare   true         sharedRepository   all  receive          denyNonFastForwards   True   Grateful for any advice or suggestions  max

User · Answer

For me its a permissions issue   On the git server run this command on the repo directory  sudo chmod -R 777 theDirectory

User · Answer

For what it worth  I had the same problem over my own VPS and it was caused by my low hard disk space on VPS  Confirmed by df -h command and after i cleaned up my VPS  hard disk  the problem was gone   Cheers

User · Answer

For me  this error occurred when I was out of space on my remote   I just needed to read the rest of the error message   error  file write error  No space left on device  fatal  unable to write sha1 file error  unpack failed  unpack-objects abnormal exit

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I was having trouble with this too  thinking my remote gitolite-admin was corrupted or something wrong       My setup is Mac OS X  10 6 6  laptop with remote Ubuntu 10 server with gitolite   It turned out that the problem was with my local checkout of gitolite-admin     Despite the  unpack failed  error  it turned out the the problem was local   I figured this out by checking it out again as gitolite-admin2  making a change  and the pushing     Voila   It worked

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Where I work we have been using this method on all of our repositories for a few years without any problems  except when we create a new repository and forget to set it up this way     Set  sharedRepository   true  in the config file s   core   section  Change the group id of the repository to a group shared by all users who are allowed to push to it   chgrp -R shared group  git our repos chmod -R g w  git our repos  Set the setgid bit on all directories in the repository so that new files directories keep the same group   find  git our repos -type d -exec chmod g s       Add this line to the pre-receive hook in the repository to ensure new file permissions allow group read write   umask 007

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A simpler way to do this is to add a post-receive script which runs the chmod command after every push to the  hub  repo on the server  Add the following line to hooks post-receive inside your git folder on the server   chmod -Rf u w  path to git repo objects

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It is a permission error  The way that was most appropriate and secure for me was adding users to a supplementary group that the repo  is owned by  or vice versa    groupadd git chgrp -R git  git chgrp -R git    usermod -G -a git   whoami

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I had this error for two weeks  and the majority of the solutions stated  chmod -R  as the the answer  unfortunately for me my git repos  local   remote   shared - with team  were all on Windows OS  and even though chmod -Rv showed all the files changed to  rwxrwxrwx   a subsequent  ls -l  still showed all files as  rwxr-xr-x  and the error repeated itself  I eventually saw this solution by Ariejan de Vroom  It worked and we were all able to pull and push again   On both local  the local that is having trouble pushing  and remote repos  run the following commands     git fsck   git prune   git repack   git fsck   On a side note  I tried using Windows  native file permissions   ACL and even resorted to elevating the problem user to Administrator  but none of that seemed to help  Not sure if the environment is important  but it may help someone with a similar setup - problem team member and remote  Windows Server 2008 R2 Standard   my local  Windows 7 VM

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In case anyone else is stuck with this  it just means the write   permissions are wrong in the repo that you   re pushing to  Go and chmod   -R it so that the user you   re accessing the git server with has write access    http   blog shamess info 2011 05 06 remote-rejected-na-unpacker-error   It just works

User · Answer

I use gitosis for managing this kind of stuff  Gitosis has a single user  usually called  git   that owns all the repositories  and it uses public-key-based access control to each repo  It might not suit your setup but is probably worth checking out  no pun intended

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This problem can also occur after Ubuntu upgrades that require a reboot   If the file  var run reboot-required exists  do or schedule a restart

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For the permission error using git repository on AWS instance  I successfully solved it by creating a group  and assigning it to the repository folder recursively -R   and give the written right to this group  and then assign the default aws instance user ec2-user or ubuntu  to this group   1  Create a goup name share group or something else       sudo groupadd share group   2  change the repository folder from  root   group to  share group        sudo chgrp -R share group  path to your repository   3   add the write authority to share group       sudo chmod -R g w  path to your repository   4  The last step is to assign current user--default user when login  by default ec2 is  ec2-user   user of ubuntu instance is  ubuntu  in ubuntu on aws  to share group  I am using ubuntu insance on aws  so my default user is ubuntu        sudo usermod -a -G share group ubuntu     By the way  to see the ownership of the folder or file just type       ls -l   path to your repository      Output       drwxr-x--x  2 root shared group    explanation please see https   wiki archlinux org index php File permissions and attributes    After step 3  you will see       drwx--x--x  2 root root   changed to      drwxr-x--x  2 root share group    In this case  I did not assign user  ubuntu  to root group  for the consideration of security  You can just try to assign you default user to root according to step 4  just skip the first 3 steps    In another  way  tried the solution by        chmod -Rf u w  path to git repo objects   It did not work for me  I think it should be the reason that my repository folder belong to the root user  not to Ubuntu user  and  git  by default use the default user ec2-user or Ubuntu user   You can try to change the user and test it     Finally  below code definitely work for me  but 777 is not good for security      sudo chmod -R 777  path to your repo

User · Answer

I was getting similar error and please see below how I resolved it   My directory structure   opt git project git  and git user is  git    cd  opt git project git   sudo chown -R git git     chown with -R option recursively changes the ownership and and group  since i typed git git in above command  of the current directory  chown -R is necessary since git changes many files inside your git directory when you push to the repository

[linux] git: can't push (unpacker error) related to permission issues

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