Re: What do the wait_current_trans messages mean I see on my raspberry pi?
On Sun, May 18, 2014 at 09:48:17PM +0200, Clemens Eisserer wrote: 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: That's about 1 MB/sec on average, I'd expect more. Any idea what they mean? Are they related to the slow speed I observed? Yes, I believe so. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
What do the wait_current_trans messages mean I see on my raspberry pi?
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 0x 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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
