Hi, Over the weekend I tried to copy one external usb drive (on ext4) to another one formatted with btrfs. Now I came back, and 48h later only ~300GB were copied and I found messages like the following on syslog: May 16 18:33:13 raspberrypi kernel: [ 8161.213142] btrfs-endio-wri D c0420f24 0 3593 2 0x00000000 May 16 18:33:13 raspberrypi kernel: [ 8161.213735] [<c0420f24>] (__schedule+0x288/0x568) from [<bf24f488>] (wait_current_trans+0xcc/0x13c [btrfs]) May 16 18:33:13 raspberrypi kernel: [ 8161.214357] [<bf24f488>] (wait_current_trans+0xcc/0x13c [btrfs]) from [<bf250e68>] (start_transaction+0x2d8/0x43c [btrfs]) May 16 18:33:13 raspberrypi kernel: [ 8161.214956] [<bf250e68>] (start_transaction+0x2d8/0x43c [btrfs]) from [<bf2510c0>] (btrfs_join_transaction+0x20/0x2c [btrfs]) May 16 18:33:13 raspberrypi kernel: [ 8161.215562] [<bf2510c0>] (btrfs_join_transaction+0x20/0x2c [btrfs]) from [<bf25a334>] (btrfs_finish_ordered_io+0x2c4/0x5b0 [btrfs]) May 16 18:33:13 raspberrypi kernel: [ 8161.216233] [<bf25a334>] (btrfs_finish_ordered_io+0x2c4/0x5b0 [btrfs]) from [<bf28473c>] (worker_loop+0x150/0x674 [btrfs]) May 16 18:33:13 raspberrypi kernel: [ 8161.216631] [<bf28473c>] (worker_loop+0x150/0x674 [btrfs]) from [<c003a120>] (kthread+0xa4/0xb0) May 16 18:33:13 raspberrypi kernel: [ 8161.218363] [<c003a120>] (kthread+0xa4/0xb0) from [<c000e218>] (ret_from_fork+0x14/0x3c) More of them are available at: http://pastebin.com/th9tuSas Any idea what they mean? Are they related to the slow speed I observed? Thank you in advance, Clemens -- 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
