Re: data DUP

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On 20/04/13 14:23, Hugo Mills wrote:
> You should upgrade anyway -- there's been a number of serious bugs in
> btrfs fixed since then.

13.04 is imminent so I'll pick up a newer kernel as part of that anyway.
(Also Tanglu which I hope to move to intends to use the Ubuntu kernel anyway.)

In any event I am not worried.  Bug fixes get backported. The probability
of hitting any serious bug is low (others would likely be victims first)
and worst case I have backups (snapshots, other machines, Google/Dropbox,
DVDs & hard drives at other people's houses etc).

There are two major reasons I switched from ext4.  The first is that
everything is online, including adding and removing devices, checking data
integrity etc.

The second is that data not silently lost.  I had some bad sectors develop
on ext4 spinning disk and the only way to properly recover was to do
offline checks that would have taken ~ 24 hours!  Finding out which
filenames were involved was far too much effort.

My philosophy is that we have machines with billions of processor cycles
per second.  They can figure things out for themselves without requiring
me to baby sit them!

I also run btrfs in a variety of configurations - raid0, raid1, sata, usb,
hdd, ssd, single device, multi-device, bare, dmcrypt, machines on all the
time, laptop, frequent suspend/resume, frequent power on/off.  I've never
experienced any problems with btrfs and use scrub for reassurance.

Roger

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