Re: [MooseFS-Users] cannot retrieve current directory .. getcwd not working on mounted moosefs filesystem

[Matt W. <mat...@gm...>]

Thanks Krzysztof, I'll use a different system and wait for the fix, this is
the price I pay for using the bleeding edge :)

On Sep 25, 2015 12:27 AM, "Krzysztof Kielak" <krz...@mo...>
wrote:
>
> Hi Matt,
>
> Thank you for your submission. We confirm that the problem exists in
> Ubuntu 15.04 with MooseFS 2.0.76. It's connected with mechanism for
> reusing inodes that was changed in MooseFS 2.0.74 to use kernel FORGET
> functionality. Both version 2.0.74 and 2.0.76 were tested on Ubuntu LTS
> editions and worked fine.
>
> Unfortunately the new kernel in Ubuntu 15.04 changed ABI for working
> with FORGET's for inodes. With this new ABI kernel does not even send
> any request to mfsmount when invoking the syscall GETCWD.
>
> Quick fix might be to execute script as follows:
>
> [ ~]$ cat test.rb
> #!/bin/env ruby
> puts Dir.pwd
> [ ~]$ cd ; ./test.rb
> /home/mfs
>
> In this situation the "cd" command before actual script executes LOOKUP
> syscall for current directory and next GETCWD syscall - that usually is
> invoked in the beginning of the script - works fine.
>
> Anyway we'll start working on this problem and solve it in the next
> version of MooseFS.
>
> Best Regards,
> Krzysztof Kielak
> Director of Operations and Customer Support
>
>
> W dniu 2015-09-25 05:58, Matt Welland napisał(a):
> > I'm on Ubuntu 15.04 using moose 2.0.76. I have a master + chunk server
> > running on a Ubuntu 14.10 machine and moosefs is mounted on that
> > machine without problems. On the 15.04 machine the getcwd call seems
> > to be failing completely. Note that ls, cat, vi and other commands all
> > work fine.
> >
> > Examples:
> >
> > 1. Fossil can't see the current directory
> > $ fossil status
> > cannot find current working directory; No such file or directory
> >
> > 2. Ruby call to getcwd fails
> >
> > $ irb
> > irb(main):001:0> Dir.pwd
> > Errno::ENOENT: No such file or directory - getcwd
> >     from (irb):1:in `pwd'
> >     from (irb):1
> >     from /usr/bin/irb:11:in `<main>'
> >
> > 3. Chicken scheme call to getcwd fails
> > csi> (current-directory)
> >
> > Error: (current-directory) cannot retrieve current directory
> >
> >     Call history:
> >
> >     <syntax>      (current-directory)
> >     <eval>      (current-directory)    <--
> >
> > this was working fine up until a few days ago, I think a recent
> > apt-get update;apt-get upgrade might have coincided with it breaking.
> > I haven't changed any configurations. Any help fixing this
> > appreciated.
> >
> >
> >
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