On Thu, 2017-07-20 at 10:32 -0700, Omar Sandoval wrote: > If that doesn't work, could you please also try > https://patchwork.kernel.org/patch/9829593/? Okay, tried the patch now, applied upon: Linux 4.12.0-trunk-amd64 #1 SMP Debian 4.12.2-1~exp1 (2017-07-18) x86_64 GNU/Linux (that is the Debian source package, with all their further patches and their kernel config). with the parameters at their defaults: # sysctl vm.dirty_bytes vm.dirty_bytes = 0 # sysctl vm.dirty_background_bytes vm.dirty_background_bytes = 0 Tried copying the whole image three times (before I haven had a single copy of the whole image with at least one error, so that should be "proof" enough that it fixes the isse) upon the btrfs fs,... no errors this time... Looks good :-) I assume you'll take care to get that patch into stable kernels? Is this patch alone enough to recommend the Debian maintainers to include it into their 4.9 long term stable kernels? And would you recommend this as an "urgent" fix? Cheers, Chris.
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