[MacPorts] Migration modified

[MacPorts]

Page "Migration" was changed by adfernandes
Diff URL: <https://trac.macports.org/wiki/Migration?action=diff&version=98>
Revision 98
Comment: Add a 'troubleshooting' note for when the restore uses too many open files.
Changes:
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Index: Migration
=========================================================================
--- Migration (version: 97)
+++ Migration (version: 98)
@@ -67,3 +67,9 @@
 sudo port install portname +variant1 +variant2 …
 }}}
 Note that if you have specified variants which are not the default, you may need to install ports in an order other than the alphabetical order recorded in `myports.txt`. You may skip explicitly installing ports that you did not request as long as they are not using non-default variants, since they will be installed as dependencies of other ports.
+
+Another potential problem is that the `restore_ports.tcl` command may fail with a `Too many open files` error message. Under macOS Sierra, the default shell has a default `ulimit` of 256 open files. The solution is to restore the ports with a slightly modified command:
+{{{
+sudo bash -c "ulimit -n 4096; ./restore_ports.tcl myports.txt"
+}}}
+This will raise the file limit for the duration of the `restore_ports.tcl` command.
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