On Aug 7, 2014, at 9:31 AM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > # btrfs send /mnt/320G/2012april_HDD_fullbackup.ro.0/ | btrfs receive /mnt/500G/ > At subvol /mnt/320G/2012april_HDD_fullbackup.ro.0/ > At subvol 2012april_HDD_fullbackup.ro.0 > ERROR: send ioctl failed with -12: Cannot allocate memory > ERROR: unexpected EOF in stream. > > > kernel-3.16.0-1.fc21.x86_64 > btrfs-progs-3.14.2-3.fc21.x86_64 > > > Both the source and destination were recently (< 24 hours) created with the above versions. > > Bug report here: > https://bugzilla.kernel.org/show_bug.cgi?id=81781 > > dmesg excerpt with debug kernel here: > https://bugzilla.kernel.org/attachment.cgi?id=145331 This isn't reproducible by only changing kernels to 3.14.15-100.fc19.x86_64, so it's a regression in 3.16. What's also interesting is the performance is much worse with 3.14 compared to 3.16. I get ~8.3MB/s with 3.14, and ~21.8MB/s with 3.16; all other factors are identical. Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
