> On 5/25/2011 8:40 AM, Michael Stowe wrote:
>>
>>> 2) It does sometimes have problems resurrecting the filesystem when it
>>> has been corrupted, I did lose *one* home directory out of 400 once
>>> upon
>>> a time.... (about 9 years ago...)
>>
>> Like I said, a filesystem that loses data *sometimes* doesn't really
>> make
>> it to the top of the list, in favor of filesystems that ... don't have
>> this problem.
>
> To be fair, those "sometimes" are crash situations and it is also a good
> idea to run hardware/operating systems/UPS's, that... don't cause that
> problem. And to have an offsite copy for the things you can't control.
I'm not arguing against either one -- though given a choice between a
filesystem that will go corrupt if the UPS fails and one that doesn't, I'd
rather go with the one that doesn't, whether I expect to experience a
power failure or not.
I've had UPS batteries blow and power rails burn out in servers before, as
well as had electricians accidentally short out an entire data center, so
I'm not inclined to believe a design flaw in a filesystem can be covered
up by a UPS. (Neither are you, obviously.)
In this case, the design flaw appears to be reiserfs's storage of
directory entries, et alia, in one massive B+ tree combined with
non-synchronous directory operations, combined with BackupPC's propensity
to perform a LOT of directory operations.
Basically, I'm saying that I believe, based on my testing, that reiserfs
is a very poor choice of filesystem for BackupPC. I'm not suggesting that
it goes corrupt with normal, continuous use, or that if nothing goes
horribly wrong, it won't be fine. I'm suggesting it's a really bad idea
to have to count on it.
------------------------------------------------------------------------------
vRanger cuts backup time in half-while increasing security.
With the market-leading solution for virtual backup and recovery,
you get blazing-fast, flexible, and affordable data protection.
Download your free trial now.
http://p.sf.net/sfu/quest-d2dcopy1
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
|
