On 2016-07-07 17:13, Francesco Turco wrote:
On 2016-07-07 23:11, Andrew E. Mileski wrote:
How large is this USB flash device?
64 GB.
I don't know if there is an official recommended minimum size for btrfs, but I
would expect 64 GB to be okay.
I've personally set my minimum recommendation for btrfs at 120 GB based on my
experience with failures in various flash devices from 4 to 30 GB.
If you want to experiment, I have a theory that formatting single volumes with
"-m single" can avoid a potential controller race in one specific situation,
plus it helps to reduce the meta overhead on smaller devices.
Lastly, the last two USB issues I investigated were both fixed by replacing the
cables. Something to try if it is a cabled device.
~~
Andrew E. Mileski
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