> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Freddie Cash
> I thought ZFSv20-something added a "if the blockcount is within 10%,
> then allow the replace to succeed" feature, to work around this issue?

About 2 yrs ago, I replaced a drive with 1 block less, and it was a big 
problem.  This was a drive bought from oracle, to replace an oracle drive, on a 
supported sun system, and it was the same model drive, with a higher firmware 
rev.  We worked on it extensively, eventually managed to shoe-horn the drive in 
there, and I pledged I would always partition drives slightly smaller from now 

Then, about 2 weeks later, the support rep emailed me to say they implemented a 
new feature, which could autoresize +/- some small percentage difference, like 
1Mb difference or something like that.

So there is some solid reason to corroborate Freddie's suspicion, but there's 
no way I'm going to find any material to reference now.  The timing even sounds 
about right to support the v20 idea.  I haven't tested or proven it myself, but 
I am confidently assuming moving forward, that small variations will be handled 

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