[MlMt] . Re: High Sierra, APFS, Time Machine, and MailMate.

[Rob Willett]

I can only second what Tracey says.

I use Carbon Copy Cloner AND Chronosync as they have slightly different 
use cases. I tend to use Chronosync for full archived backups and CCC 
for disk clones but thats just me. I suspect I could use only one system 
and be very happy.

I have had too many issues with TM and it's no longer allowed to be used 
on any Mac I own.

Rob

On 14 Dec 2017, at 17:44, Tracy Valleau wrote:

> As an Apple Developer since 1978, I can say that I quit using TM years 
> ago. It is a consumer-level product, with modest capabilities and 
> horrible reliability.
>
> You asked for a solution. You need more robust backup software, which 
> offers a mimicking of TM.
>
> Two extremely reliable options are Carbon Copy Cloner and Chronosync. 
> Both can be configured to run automatically whenever you like.
>
> Chronosync is extremely versatile, and can out-do TM in its level of 
> granularity.
>
>
> Tracy
> www.valleau.art
>
>
>
>
> On 14 Dec 2017, at 9:00, mailmate-request at lists.freron.com wrote:
>
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>>    1. Re: High Sierra, APFS, Time Machine, and MailMate... (Roger 
>> Bohn)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Wed, 13 Dec 2017 09:45:44 -0800
>> From: "Roger Bohn" <Rbohn at ucsd.edu>
>> To: "MailMate Users" <mailmate at lists.freron.com>
>> Subject: Re: [MlMt] High Sierra, APFS, Time Machine, and MailMate...
>> Message-ID: <4355C63B-7270-4D4A-B4B8-B45D276873E0 at ucsd.edu>
>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>
>> I have had this situation for many YEARS, long before I got MailMate.
>> The overall symptom is that backups take *many hours*, with sudden,
>> inexplicable stalls. I say
>>> "inexplicable" because Activity Monitor shows essentially no CPU,
>>> network, or disk activity -- but the backup just *stops*.
>>
>> The problem is worse, the more Time Machine needs to back up. And for
>> reasons I have never figured out, even a routine backup on TM (of a 
>> few
>> hours of material) can have 5GB of files to go through. As a result, 
>> I
>> can get into a situation where TM is completely unable to get up to
>> date.
>>
>> So I don’t know a solution, but don’t be too sure that it is 
>> really
>> due to MM. If anyone finds a solution, please drop me a line!
>>    One thing that helps is to switch from WiFi to a hard ethernet
>> connection. For some reason, TM is considerably faster that way.
>>
>>   Roger Bohn, UC San Diego
>> Rbohn at ucsd.edu
>>
>> On 10 Dec 2017, at 18:14, Steven M. Bellovin wrote:
>>
>>> Seems like an improbable subject line--but is anyone else who uses
>>> MailMate on High Sierra/APFS suddenly having serious Time Machine
>>> performance issues? I am, on two different laptops. An iMac, which 
>>> has
>>> a hard drive and hence HFS+, is not having any trouble.
>>>
>>> The overall symptom is that backups take *many hours*, with sudden,
>>> inexplicable stalls. I say "inexplicable" because Activity Monitor
>>> shows essentially no CPU, network, or disk activity -- but the 
>>> backup
>>> just *stops*. I normally don't run MailMate on one of the laptops; 
>>> its
>>> backups complete in a rational amount of time. When I do, it sees 
>>> the
>>> same stalls. In fact, I'm running MailMate on it right now so that I
>>> can see what happens on my primary laptop when I exit MailMate. Sure
>>> enough, that machine is now behaving.
>>>
>>> My suspicion is that the problem has to do with very large 
>>> directories
>>> on APFS file systems, but I don't know that for sure. I have some 
>>> very
>>> large mailboxes, though, and these are of course active when 
>>> MailMate
>>> is running.  And of course, that doesn't explain why I don't see any
>>> system activity.
>>>
>>> Is anyone else seeing this? Does anyone have any work-arounds, other
>>> than "don't have such large mailboxes" or "don't run APFS"? I do 
>>> have
>>> a new laptop on order; I'm seriously tempted to reformat it as HFS+
>>> before I start using it.
>>>
>>>
>>>         --Steve Bellovin, https://www.cs.columbia.edu/~smb
>>>
>>>
>>> _______________________________________________
>>> mailmate mailing list
>>> mailmate at lists.freron.com
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