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Subject: Re: Error accessing mapped drive >2TB?
From: Warren Young <wyml AT etr-usa DOT com>
In-Reply-To: <CA+2x6-L_pqdN6PHE0c15hcmrmB66Z75Hz95cH+dbcn4yXuVZNg@mail.gmail.com>
Date: Mon, 14 Sep 2015 14:34:12 -0600
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On Sep 12, 2015, at 11:14 AM, Nem W Schlecht <nemws1 AT gmail DOT com> wrote:
> 
> The only thing I can think of is that the 2nd drive is >2TB.

The same thing happens here with a 3.1 TB Fusion drive and a 500 GB external drive, so no, I don’t think the volume size is the real issue.

I assume you are seeing the same thing that I am, that Explorer shows the root contents of both drives just fine?

When I strace’d an ls of one of these root shares here, I got 764 lines of…emissions, of which this section seems the most interesting to me:

1051  263166 [main] ls 4720 stat64: entering
  625  263791 [main] ls 4720 normalize_posix_path: src /p
  609  264400 [main] ls 4720 normalize_posix_path: /p = normalize_posix_path (/p)
  630  265030 [main] ls 4720 mount_info::conv_to_win32_path: conv_to_win32_path (/p)
  653  265683 [main] ls 4720 mount_info::cygdrive_win32_path: src '/p', dst 'P:\'
  668  266351 [main] ls 4720 set_flags: flags: binary (0x2)
  674  267025 [main] ls 4720 mount_info::conv_to_win32_path: src_path /p, dst P:\, flags 0x4022, rc 0
 1168  268193 [main] ls 4720 symlink_info::check: 0x0 = NtCreateFile (\??\P:\)
10641  278834 [main] ls 4720 symlink_info::check_reparse_point: NtFsControlFile(FSCTL_GET_REPARSE_POINT) failed, 0xC0000275
  839  279673 [main] ls 4720 symlink_info::check: not a symlink
 1049  280722 [main] ls 4720 symlink_info::check: 0 = symlink.check(P:\, 0x24B620) (0x4022)
  655  281377 [main] ls 4720 path_conv::check: this->path(P:\), has_acls(0)
  640  282017 [main] ls 4720 stat_worker: got 5 error from path_conv
  757  282774 [main] ls 4720 __set_errno: int stat_worker(path_conv&, stat*):1933 setting errno 5
  714  283488 [main] ls 4720 stat_worker: -1 = (\??\P:\,0x600042080)

Why errno 5 from path_conv?

Yes, I am one of those evil people who edit cygdrive out of /etc/fstab so I can use /x, where x=drive letter. :)
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