Re: [OpenAFS] Anyone else experiencing a cache bug in 64-bit OpenAFS for Windows 1.7.3200?

2014-12-01 Thread Matt W. Benjamin
Hi, I run into "this" frequently on my Win 7 (64-bit) laptop. I had a sense the problem might be related to changing networks and hibernation, but shamefully I haven't made any real effort to root cause it. In my random attempts to deal with it, I found that reboots (usually more than one) hel

Re: [OpenAFS] OpenAFS on ZFS (Was: Salvaging user volumes)

2013-06-14 Thread Matt W. Benjamin
I don't think that yet exists. You could distinguish Cephfs from RBD. The former would not (currently) seem worth attempting. Perhaps RBD could form a backing store for partitions. I'm not convinced, but I'd be interested in any data points. Matt - "Steven Presser" wrote: > If any on

Re: [OpenAFS] Fwd: [ANNOUNCEMENT] Updated: Cygwin 1.7.19

2013-06-05 Thread Matt W. Benjamin
Congratulations, this is wonderful news. I've been following this on the Cygwin list. Thanks for the effort. Matt - "Jeffrey Altman" wrote: > As of Cygwin 1.7.19, there is support for OpenAFS 1.7 mount points > and > symlinks. > > Jeffrey Altman > -- Matt Benjamin The Linux Box 206 S

Re: [OpenAFS] Re: [OpenAFS-devel] rxgk development has been funded

2012-10-30 Thread Matt W. Benjamin
Hi, I don't think that's what Troy meant. At any rate, he -might- have meant he presumed there would be no interest in standardizing rxk5 unless it turned out to be something that a significant number of real sites wanted to use. Matt - "Gary Buhrmaster" wrote: > On Tue, Oct 30, 2012 at

Re: [OpenAFS] tcpoob timeline

2012-10-26 Thread Matt W. Benjamin
Hi, Just for clarification, and I don't know who to ask at this point, this mail discusses "tcpoob." What happened to rxtcp? Matt - "Andrew Deason" wrote: > On Wed, 17 Oct 2012 10:45:05 +0200 > Peter van der Reest wrote: > > > In fact, today already one question came up: > > what is th

[OpenAFS] Re: [OpenAFS-devel] rxgk development has been funded

2012-10-25 Thread Matt W. Benjamin
Hi, Obviously, Marcus and I thought having such a mechanism was a good idea. When we started work, the idea of "standardizing" the protocol hadn't been formalized. The objections early on amounted somewhat, I feel, to "the great is the enemy of the good." It has been claimed that rxk5 is "un

Re: [OpenAFS] buildbot and packages

2012-09-17 Thread Matt W. Benjamin
Hi, Well, we used the fuse rather extensively for locking and dirformat testing. It's experimental, but science experiment might be a little strong. Matt - "Russ Allbery" wrote: > Troy Benjegerdes writes: > > > I'm looking to get all the low-hanging fruit with unskilled > testing. > >

Re: [OpenAFS] AFS without DES on users' KDCs?

2012-06-03 Thread Matt W. Benjamin
Hi, Marcus and I consider rxk5 to be a closed effort. We did make rxk5 partly as a challenge to the OpenAFS participants to adopt a candidate solution quickly, since the transport security problem was (and is) pressing. It should have been seriously considered for integration in 2006-7, since

Re: [OpenAFS] Re: afsd.fuse usage?

2011-09-20 Thread Matt W. Benjamin
Tue Sep 20 15:06:07 2011 Assertion failed! file > /build/buildd-openafs_1.6.0-1-amd64-YBR2T1/openafs-1.6.0/src/afs/UKERNEL/afs_usrops.c, > line 1284. > > > > On Tue, Sep 20, 2011 at 02:58:33PM -0400, Matt W. Benjamin wrote: > > Hi Troy, > > > > When I just rece

Re: [OpenAFS] Re: afsd.fuse usage?

2011-09-20 Thread Matt W. Benjamin
Hi Troy, When I just recently used fuse UKERNEL I did the following: afsd.fuse -memcache -mountdir /fafs -cachedir /vcache -d and got initial results. I haven't worked much with it yet, but the cm started and responded to vfsops. Matt - "Troy Benjegerdes" wrote: > Something is broken

Re: [OpenAFS] Tips for increasing throughput

2011-08-31 Thread Matt W. Benjamin
he fileserver configuration is the default from the repository: > /usr/lib/openafs/fileserver -p 23 -busyat 600 -rxpck 400 -s 1200 -l > 1200 -cb 65535 -b 240 -vc 1200 > > > > On Wed, Aug 31, 2011 at 6:01 AM, Matt W. Benjamin < m...@linuxbox.com > > wrote: > &g

Re: [OpenAFS] Tips for increasing throughput

2011-08-31 Thread Matt W. Benjamin
Hi, I think some more detail on the network/network path would be helpful. Regards, Matt - "Ken Elkabany" wrote: > Hi, > > > On a network capable of scp-ing files between machines at 60MB/sec, we > are only able to achieve 2-3MB/sec of throughput when using AFS. We've > been conducting

Re: [OpenAFS] AFS Cache on Parallel File system

2011-07-07 Thread Matt W. Benjamin
Hi, If you're primarily interested in direct access, you might want to look at rxosd's vicep-access, which makes AFS volumes directly available to the client over a cluster file system--Lustre or GPFS, but perhaps you could make glusterfs go easily, I'm not sure. This actually has demonstrated

Re: [OpenAFS] File server memory requirements

2011-06-19 Thread Matt W. Benjamin
Actually, not exactly. And Russ already sent a template with some good defaults. If you want more than that number of callbacks, increase the value for -cb. Matt - "Matt W. Benjamin" wrote: > (Yes, exactly.) IIRC, by default it's around 64k, but was going to be >

Re: [OpenAFS] File server memory requirements

2011-06-19 Thread Matt W. Benjamin
(Yes, exactly.) IIRC, by default it's around 64k, but was going to be increased? Matt - "Jaap Winius" wrote: > Quoting "Matt W. Benjamin" : > > > ... If you're not already setting a million or so, for rw file > > service, you might consid

Re: [OpenAFS] File server memory requirements

2011-06-19 Thread Matt W. Benjamin
One way you can take deterministic advantage of more memory in today's fileservers (caveat, if you have the workload) is to increase the number of callbacks supported. If you're not already setting a million or so, for rw file service, you might consider increasing that parameter. Matt -

Re: [OpenAFS] Re: [OpenAFS-devel] OpenAFS callbacks

2011-04-11 Thread Matt W. Benjamin
Hi, It would be helpful to better understand the original design intention here. Not knowing the semantic intent of whatever remote update has taken place, the cm cannot reliably decide what is a compatible update. Assuming that no remote change is compatible with any local change contradicts

Re: [OpenAFS] Re: High Available Transparent Shared-Disk

2011-04-11 Thread Matt W. Benjamin
Hi, It's useful to document these limitations, but of course, they don't necessarily rule out rxosd mirroring having utility for some application. Also, I had the impression rxosd was undergoing development. Matt - "Simon Wilkinson" wrote: > On 11 Apr 2011, at

Re: [OpenAFS] Re: High Available Transparent Shared-Disk

2011-04-11 Thread Matt W. Benjamin
Hi, The variant of OpenAFS called rxosd has write mirroring, too, I believe (currently, this is a fork, has quite a number of differences to OpenAFS). However, my intuition is that some other system would work better for this use case. Just speculatively, 1. you might find the mirroring in g

Re: [OpenAFS] Opening files read-only when another process has a write-lock

2011-03-18 Thread Matt W. Benjamin
Hi Thomas, Mandatory enforcement is the defined behavior for byte-range locks on Windows. Since you are testing on Windows, you are seeing the Windows behavior. The same lock would be interpreted as advisory on a Unix client. Matt - "Thomas Smith" wrote: > Hi, > > Is it possible to op

Re: [OpenAFS] Re: openafs-stable-1_6_0pre1 installing with various OpenSUSE kernels

2011-01-07 Thread Matt W. Benjamin
Or, I would have thought, copied the module to kernel/fs, run depmod, and used modprobe to load libafs? Matt - "Andrew Deason" wrote: > On Fri, 7 Jan 2011 11:01:08 -0800 > Ted Creedon wrote: > > > libafs: Unknown symbol find_exported_dentry > > libafs: Unknown symbol export_op_default >

Re: [OpenAFS] Re: Preferred way to do backup?

2010-12-17 Thread Matt W. Benjamin
FYI, I'm -actually- and AFS backup lamer and archive volume dumps in a Bacula repo. Sorry. Matt - "Emil Assarsson" wrote: > Thanks all for the suggestions :-) > > I found this on internet > http://linuxbox.com/drupal/files/downloads/afs_backup_afsbp2005.pdf > that seems to bring up some

Re: [OpenAFS] Preferred way to do backup? [Was] Re: best way to control "butc" tape host process?

2010-12-17 Thread Matt W. Benjamin
Hi, I may be misremembering here, but my recollection of the current Amanda and Bacula solutions is that they are somewhat primitive, e.g., compared with TiBs or TSM integrations. (I think Russ has talked a not infrequently about further work on Bacula integration would be desirable.) Someone

Re: [OpenAFS] Re: bonnie++ on OpenAFS

2010-11-23 Thread Matt W. Benjamin
Hi, Is "write-on-close" was an expectation which could be broken? It is the case that AFS has strongly expressed that its semantics are (in general) _sync-on-close_, and it's meaning is that an application which has closed an AFS file may consider any writes it made to be stable, and visible t

Re: [OpenAFS] Re: Documentation on fs bypassthreshold?

2010-10-18 Thread Matt W. Benjamin
Hi, Cant switch off is broken, sure. Cache nothing, however, is reasonable, for some application. I think a better way to specify "one" of { disabled; 1..ULONG_MAX; always} would be desirable. The expectation is that there might be a need for different selectors or thresholds, but there has

Re: [OpenAFS] Documentation on fs bypassthreshold?

2010-10-18 Thread Matt W. Benjamin
Hi Phil, This fs operation gets, or sets, a threshold (relative to file size) for cache bypass. You need to be using a CM port with bypass support, i.e., Linux right now. By default, all reads and writes are through the CM's cache. There is no threshold unless set, so by default cache bypass

Re: [OpenAFS] gerrit now has bugzilla integration

2010-06-19 Thread Matt W. Benjamin
Sorry, I wasn't expressing an opinion... Matt - "Derrick Brashear" wrote: > On Sat, Jun 19, 2010 at 9:39 PM, Matt W. Benjamin > wrote: > > wow.  do we want that?  replacement for rt? > > > > Matt > > > > - "Adam Megacz" wr

Re: [OpenAFS] gerrit now has bugzilla integration

2010-06-19 Thread Matt W. Benjamin
wow. do we want that? replacement for rt? Matt - "Adam Megacz" wrote: > FYI > > http://code.google.com/p/gerrit/issues/detail?id=124 > > ___ > OpenAFS-info mailing list > OpenAFS-info@openafs.org > https://lists.openafs.org/mailman/listinfo/

Re: [OpenAFS] sqlite on AFS will not work, even with whole-file locking

2010-04-21 Thread Matt W. Benjamin
If the CM omits to flush in this case, that's a plausible result. Viced will BCB when the lock is released, but if the changed data hasn't been written back, the cooperating clients lose. Matt - "Simon Wilkinson" wrote: > > I strongly suspect that the copy on the client is up to date, at

Re: [OpenAFS] Shared r/w access to numerous sqlite databases: an appropriate application for AFS?

2010-04-08 Thread Matt W. Benjamin
Hi, Simon is correct. A byte-range locking implementation for OpenAFS is being funded by Your File System, Inc., under its DOE SBIR Phase II grant. As stated elsewhere by Jeff, there are (or will be) structures for making completed available to the community during the course of the work. Ho

Re: [OpenAFS] Re: Setting the BOS Server's Restart Times

2010-01-12 Thread Matt W. Benjamin
well done - "Andrew Deason" wrote: > On Tue, 12 Jan 2010 23:19:09 + > Simon Wilkinson wrote: > > > > > On 12 Jan 2010, at 23:12, Gary Gatling wrote: > > > > > Thanks a lot for all the replys. Its sounds like we don't need to > > > be restarting afs every week since we are using a mod

Re: [OpenAFS] kerberos 5 encryption types status

2010-01-12 Thread Matt W. Benjamin
Hi, Interested folks are welcome to try rxk5 in its current form. Feel free to email me or Marcus if this would be helpful to you. Regards, Matt - "Russ Allbery" wrote: > Jack Neely writes: > > > I'm researching upgrading our aging (1.2) Kerberos 5 infrastructure > to > > 1.6. I'm at

Re: [OpenAFS] Force client to cache directory

2010-01-04 Thread Matt W. Benjamin
Hi, It appears this script will tend to keep callbacks registered on fid and the objects in fid, and discourage their eviction from cache, but doesn't force the CM to read in segments of the objects. It would be trivial to make it do. As Marc's comment implies though, without discon, I don't

Re: [OpenAFS-devel] Re: [OpenAFS] Thinking about 1.6

2009-12-17 Thread Matt W. Benjamin
Hi, I do think that we need to avoid assuming lack of clamor for some feature means folks don't think it's important. I haven't seen benchmarks on pthreaded ubik--but from intuition, I intuit we would, at any rate. Matt - "Steven Jenkins" wrote: > On Thu, Dec 17, 2009 at 2:29 AM, Alista

Re: [OpenAFS] Thinking about 1.6

2009-12-16 Thread Matt W. Benjamin
Hi Simon, I would generally agree with almost all of this, except, probably removing --enable-fast-restart? Since, as you note, there are sites which actually do rely on this, are you in fact meaning to say that the option would exist, but not be mentioned in the usage? I guess I'd also like

Re: [OpenAFS] rxk5 Mainline Issues?

2009-11-07 Thread Matt W. Benjamin
Hi, I don't think Marcus' remark was meant to be disingenuous, but, in any case. Simon and I discussed some of the issues yesterday via XMPP. We agree there are lots of things Marcus and I can do, but a lot of things become easier and more useful to do when upstream is ready start thinking ab

[OpenAFS] Review/Comments Extended Callback Information Draft

2009-10-07 Thread Matt W. Benjamin
Hi Folks, As subscribers to the afs3-standardization list know already, a hypothetical last draft of the Extended Callback Information proposal has been published, including changes requested at the Edinburgh AFS hackathon which just took place. The process we've agreed to follow resembles the

Re: [OpenAFS] Openafs failover

2009-09-02 Thread Matt W. Benjamin
Hi Tom, I recall mentioning in Ohio, XCB doesn't have a private view of client callback state. I'm unsure it's a good tradeoff to serialize XCB messages for "reliable delivery." You would be changing the goal from "consistency is preserved" to "clients don't need to update their cache" on fai

Re: [OpenAFS] freebsd client

2009-06-05 Thread Matt W. Benjamin
Hi, Thank you, elbarto. (You all might want to get on openafs-devel, and/or freebsd-afs mailing lists, as well). Regards, Matt -- Emmanuel Vadot elba...@arcadebsd.org ___ OpenAFS-info mailing list OpenAFS-info@openafs.org https://lists.openafs.or

Re: [OpenAFS] freebsd client

2009-06-02 Thread Matt W. Benjamin
Hi, The client supports 7.0, on i386 and amd64 (and a number of prior releases). There is at least one significant open issue at 7.x and 8-CURRENT, that hopefully will be resolved fairly soon. Matt - Original Message - From: "Jerry McAllister" To: "Derrick Brashear" Cc: "ENEM|Hans M

Re: [OpenAFS] Re: Thinking about a different way to distribute configuration.

2009-05-17 Thread Matt W. Benjamin
Even a more self tuning OpenAFS is going to need to be...tunable to better suit specific environments. It's the nature of complex systems. - Original Message - The long term direction is absolutely to make things more self-tuning. Getting there is going to take a long time. In the mea

[OpenAFS] Re: [OpenAFS-devel] Selecting a configuration file format for OpenAFS Services

2009-05-16 Thread Matt W. Benjamin
n then, create another marked state where options are subject to move at a finite date some time in the future. I mean, let's find some flexibility somewhere, somehow... Matt - Original Message - From: "Derrick Brashear" To: "Matt W. Benjamin" Cc: "OpenAF

[OpenAFS] Re: [OpenAFS-devel] Selecting a configuration file format for OpenAFS Services

2009-05-16 Thread Matt W. Benjamin
moved to a config file in a couple of months. We will all deal. Regards, Matt ----- Original Message - From: "Matt W. Benjamin" To: "Derrick Brashear" Cc: "OpenAFS Devel" , "openafs" , u+openafsdev-t...@chalmers.se Sent: Saturday, May

[OpenAFS] Re: [OpenAFS-devel] Selecting a configuration file format for OpenAFS Services

2009-05-16 Thread Matt W. Benjamin
- Original Message - From: "Derrick Brashear" To: u+openafsdev-t...@chalmers.se Cc: "OpenAFS Devel" , "openafs" Sent: Saturday, May 16, 2009 10:07:12 AM GMT -05:00 US/Canada Eastern Subject: Re: [OpenAFS-devel] Selecting a configuration file format for OpenAFS Services On Sat, May 16