[Info-vax] more on minicopy

Phillip Helbig---undress to reply helbig at astro.multiCLOTHESvax.de
Wed Jan 2 14:38:29 EST 2013


In article <kc21k7$qq1$1 at dont-email.me>, Stephen Hoffman
<seaohveh at hoffmanlabs.invalid> writes: 

> > It seems to me that intentional dismounts of members of shadow sets are
> > rare compared to unplanned node crashes
> 
> Shadowset members are being used for quick backups, and backups happen 
> rather more often than host crashes.

Hhmmm.  If the disk is quite active, then it might be difficult to get a 
consistent---only "crash consistent" copy from a shadow set.  But if not 
much changes, there isn't as much need for a backup.  Of course, there 
are things in between, such as applications which do a lot but can find 
a quiet point for a backup.  At home, though, I am in one camp (stable 
disk, infrequent updates, mostly READ) or the other (active disk with 
many open files).




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