From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Monakhov Subject: ext4 metadata reservation warnings Date: Fri, 12 Apr 2013 20:38:02 +0400 Message-ID: <87wqs7bt79.fsf@openvz.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: lczerner@redhat.com, ext4 development Return-path: Received: from mail-lb0-f182.google.com ([209.85.217.182]:59000 "EHLO mail-lb0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752441Ab3DLQiJ (ORCPT ); Fri, 12 Apr 2013 12:38:09 -0400 Received: by mail-lb0-f182.google.com with SMTP id z13so2833664lbh.27 for ; Fri, 12 Apr 2013 09:38:06 -0700 (PDT) Sender: linux-ext4-owner@vger.kernel.org List-ID: I use 9d35f846aa9 and have a lot of warning, Lukas is it yours? I use default mount options, just run compilebench on small fs. EXT4-fs warning (device dm-3): ext4_da_update_reserve_space:360: ino 434401, allocated 2 with only 1 reserved metadata blocks (releasing 19 blocks with reserved 19 data blocks) ------------[ cut here ]------------ WARNING: at fs/ext4/inode.c:361 ext4_da_update_reserve_space+0x208/0x390() Hardware name: Modules linked in: cpufreq_ondemand acpi_cpufreq freq_table mperf coretemp kvm_intel kvm crc32c_intel ghash_clmulni_intel microcode sg xhci_hcd button sd_mod crc_t10dif aesni_intel ablk_helper cryptd lrw aes_x86_64 xts gf128mul ahci libahci pata_acpi ata_generic dm_mirror dm_region_hash dm_log dm_mod Pid: 763, comm: flush-253:3 Tainted: G W 3.9.0-rc5+ #16 Call Trace: [] warn_slowpath_common+0xc3/0xf0 [] warn_slowpath_null+0x1a/0x20 [] ext4_da_update_reserve_space+0x208/0x390 [] ? ext4_map_blocks+0x5b1/0x620 [] ext4_map_blocks+0x3ab/0x620 [] mpage_da_map_and_submit+0x11f/0x3d0 [] ? ext4_da_writepages+0x3f7/0x890 [] ext4_da_writepages+0x4c5/0x890 [] ? native_sched_clock+0x97/0xe0 [] do_writepages+0x51/0x70 [] __writeback_single_inode+0x12b/0x300 [] ? do_raw_spin_unlock+0x1ba/0x1d0 [] writeback_sb_inodes+0x356/0x520 [] ? _raw_spin_unlock+0x2b/0x50 [] __writeback_inodes_wb+0xaf/0x160 [] wb_writeback+0x28b/0x580 [] wb_do_writeback+0x2cf/0x3c0 [] ? lock_timer_base+0xf0/0xf0 [] bdi_writeback_thread+0x153/0x440 [] ? wb_do_writeback+0x3c0/0x3c0 [] kthread+0x100/0x110 [] ? __init_kthread_worker+0x70/0x70 [] ret_from_fork+0x7c/0xb0 [] ? __init_kthread_worker+0x70/0x70 ---[ end trace ae875167efd67102 ]--- EXT4-fs warning (device dm-3): ext4_da_update_reserve_space:360: ino 213140, allocated 1 with only 0 reserved metadata blocks (releasing 42 blocks with reserved 42 data blocks) ------------[ cut here ]------------