From: "Avi Miller" <avi.miller@gmail.com> To: "Toby Corkindale" <toby.corkindale@strategicdata.com.au> Cc: "James Harper" <james.harper@bendigoit.com.au>, russell@coker.com.au, luv-main@luv.asn.au Sent: Monday, 18 June, 2012 12:08:27 PM Subject: Re: BTRFS conversion
On 18/06/2012, at 11:51 AM, Toby Corkindale wrote:
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From: "James Harper" <james.harper@bendigoit.com.au> 5. remove both USB's (maybe a good test of BTRFS to see how it likes one of its disks disappearing!)
In my testing (albeit only up to kernel 3.2), the result of that was a complete kernel segfault and halt. Btrfs really did NOT like having its devices disappear from under it!
This shouldn't happen in 3.4 or higher - but you're right that btrfs really doesn't like having it's devices disappear.
I had hoped that it would, at best, continue to work (as the devices were set up in a RAID format), or at worst, just throw some errors. The complete halting of the machine was rather abrupt :/ I think I struggled to get btrfs to re-accept the USB drives and to start remirroring as well, but hopefully that has improved too? (Last time I checked was on 3.2.0 with a self-compiled version of the userland, much earlier this year)