On Thu, 28 Jul 2011 04:23:43 PM Stephane Chazelas wrote: > Hiya, I got below those last night. That was 3 minutes after a > bunch of rsync and ntfsclone processes started.
Similar here with an rsync to an external USB drive (SATA) from a local ext4 partition. This is with the Ubuntu mainline PPA (AMD64) build of 3.0. http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.0-oneiric/linux-image-3.0.0-0300- generic_3.0.0-0300.201107220917_amd64.deb [175681.180099] INFO: task flush-btrfs-1:26899 blocked for more than 120 seconds. [175681.180104] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [175681.180106] flush-btrfs-1 D ffff88021e64df80 0 26899 2 0x00000000 [175681.180111] ffff880152e597d0 0000000000000046 ffff880152e596d0 ffff880152e59fd8 [175681.180115] ffff880152e597d0 0000000000012a40 0000000000012a40 ffff880152e59fd8 [175681.180119] ffff880152e59fd8 0000000000012a40 ffff88021e64dbc0 ffff880222d28000 [175681.180124] Call Trace: [175681.180132] [<ffffffff812e90de>] ? radix_tree_gang_lookup_slot+0x7e/0xc0 [175681.180160] [<ffffffffa0263394>] ? clear_extent_bit+0x194/0x380 [btrfs] [175681.180166] [<ffffffff8110e129>] ? find_get_pages_contig+0x39/0xe0 [175681.180171] [<ffffffff81034f69>] ? default_spin_lock_flags+0x9/0x10 [175681.180175] [<ffffffff815dfd84>] ? _raw_spin_lock_irqsave+0x34/0x50 [175681.180179] [<ffffffff81084efc>] ? prepare_to_wait+0x7c/0x90 [175681.180192] [<ffffffffa02430c9>] wait_current_trans+0x99/0x100 [btrfs] [175681.180195] [<ffffffff81084c40>] ? wake_up_bit+0x40/0x40 [175681.180198] [<ffffffff815dfd3e>] ? _raw_spin_lock+0xe/0x20 [175681.180210] [<ffffffffa0244ef8>] start_transaction+0x138/0x270 [btrfs] [175681.180223] [<ffffffffa0245085>] btrfs_join_transaction+0x15/0x20 [btrfs] [175681.180236] [<ffffffffa024a952>] cow_file_range+0x82/0x390 [btrfs] [175681.180239] [<ffffffff815dfd3e>] ? _raw_spin_lock+0xe/0x20 [175681.180252] [<ffffffffa0264228>] ? test_range_bit+0x88/0x140 [btrfs] [175681.180266] [<ffffffffa024c6af>] run_delalloc_range+0x4f/0x80 [btrfs] [175681.180279] [<ffffffffa0266ac1>] __extent_writepage+0x4b1/0x650 [btrfs] [175681.180283] [<ffffffff812e9a40>] ? radix_tree_gang_lookup_tag_slot+0x90/0xd0 [175681.180287] [<ffffffff8110d125>] ? find_get_pages_tag+0x45/0x100 [175681.180300] [<ffffffffa0266138>] extent_write_cache_pages+0x208/0x2d0 [btrfs] [175681.180314] [<ffffffffa0262720>] ? flush_epd_write_bio+0x50/0x50 [btrfs] [175681.180327] [<ffffffffa0266610>] ? find_lock_delalloc_range+0x1d0/0x1d0 [btrfs] [175681.180342] [<ffffffffa0266254>] extent_writepages+0x54/0x70 [btrfs] [175681.180355] [<ffffffffa0250520>] ? btrfs_page_mkwrite+0x2d0/0x2d0 [btrfs] [175681.180369] [<ffffffffa0246f18>] btrfs_writepages+0x28/0x30 [btrfs] [175681.180372] [<ffffffff81117c51>] do_writepages+0x21/0x40 [175681.180376] [<ffffffff81191514>] writeback_single_inode+0xf4/0x210 [175681.180380] [<ffffffff8105844e>] ? put_prev_entity+0x2e/0x70 [175681.180383] [<ffffffff811918e0>] writeback_sb_inodes+0xe0/0x190 [175681.180386] [<ffffffff81191aff>] writeback_inodes_wb+0xcf/0xf0 [175681.180389] [<ffffffff81191d63>] wb_writeback+0x243/0x370 [175681.180393] [<ffffffff8107184b>] ? lock_timer_base+0x3b/0x70 [175681.180396] [<ffffffff81191f19>] wb_check_old_data_flush+0x89/0xa0 [175681.180398] [<ffffffff8119204b>] wb_do_writeback+0x8b/0xe0 [175681.180401] [<ffffffff811920a0>] ? wb_do_writeback+0xe0/0xe0 [175681.180404] [<ffffffff81192153>] bdi_writeback_thread+0xb3/0x260 [175681.180406] [<ffffffff811920a0>] ? wb_do_writeback+0xe0/0xe0 [175681.180409] [<ffffffff81084577>] kthread+0x97/0xa0 [175681.180413] [<ffffffff815e94a4>] kernel_thread_helper+0x4/0x10 [175681.180416] [<ffffffff810844e0>] ? kthread_bind+0x80/0x80 [175681.180419] [<ffffffff815e94a0>] ? gs_change+0x13/0x13 -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC This email may come with a PGP signature as a file. Do not panic. For more info see: http://en.wikipedia.org/wiki/OpenPGP
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