All Mac versions currently running OpenAFS client or Auristor client (OpenAFS compatible) will need to upgrade the client to AuriStorFS v0.160 before upgrading MacOS to High Sierra. We generally recommend against upgrading to a new major OS immediately that it comes available. In this case, OpenAFS may not be the only thing to break, since the format of the filesystem on the boot drive changes. The legacy OpenAFS client distribution probably won't ever get an upgrade, due the difficulties of signing the installers in the way Apple requires, so this means all Macs still needing AFS access will need to upgrade to the AuriStorFS client. We have NOT yet tested this - the new client has just become available. Email me for more information. Richard -- Richard Brittain, Research Computing Group, IT Services, 37 Dewey Field Road, HB6219 Dartmouth College, Hanover NH 03755 [log in to unmask] 603-646-2085 http://rc.dartmouth.edu/ ---------- Forwarded message ---------- Date: Thu, 21 Sep 2017 23:06:49 -0400 From: Jeffrey Altman <[log in to unmask]> To: auristorfs-osx-users List Member <[log in to unmask]> Subject: [auristorfs-osx-users] URGENT: macOS High Sierra to be released next week - must upgrade to AuriStorFS v0.160 first To all AuriStorFS macOS users, Next week Apple is expected to release macOS High Sierra to the public as a free upgrade. Apple has published the following document describing the upcoming changes that institutional end users must prepare for. Prepare your institution for iOS 11, macOS High Sierra, or macOS Server 5.4 https://support.apple.com/en-us/HT207828 In that document Apple references two sets of changes that impact macOS systems upgraded to High Sierra if an OpenAFS or AuriStorFS client is installed. 1. Apple File System (APFS) As part of the High Sierra upgrade the local file system will be converted from HFS+ to APFS. Unfortunately, the OpenAFS and AuriStorFS disk cache is file system dependent. All OpenAFS clients for macOS and all AuriStorFS clients for macOS prior to AuriStorFS v0.160 are unaware of APFS and will panic the machine if the disk cache is located on an APFS volume. Today, AuriStorFS v0.160 has been published to the AuriStorFS download web page: https://www.auristor.com/filesystem/client-installer/ Prior to performing the macOS High Sierra upgrade, any installed OpenAFS or AuriStorFS must be uninstalled or upgraded to AuriStorFS v0.160. As with any macOS upgrade, after the upgrade the High Sierra specific installer for AuriStorFS should be installed. The macOS High Sierra v0.160 dmg was published to the AuriStorFS download site today. 2. User Approved Kernel Extension Loading https://support.apple.com/en-us/HT208019 Apple has decided that newly installed kernel extensions will require "User Approval" before they can load. "User Approval" is more than just running an installer with Administrator privileges. After installing AuriStorFS on macos High Sierra, an end user will have to manually approve the kernel extension before /afs can be accessed. I realize the time is short. Apple is expected to release macOS High Sierra on Tuesday 26 September 2017. AuriStor, Inc. became aware of the panic after upgrade issue a couple of days ago. Jeffrey Altman AuriStor, Inc.