http://bugzilla.kernel.org/show_bug.cgi?id=13604 Summary: cascade of "mpage_da_map_blocks block allocation failed" errors Product: File System Version: 2.5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: bernie@xxxxxxxxxxx Regression: No While qemu was writing on a qcow2 image -- presumably a sparse, mmaped() file -- the home partition filled up to the reserved block limit, and the kernel started issuing a cascade of errors, making the system very unresponsive for 30 seconds. Eventually, the qemu process was killed with a SIGSEGV, but the system was still unusable because every process attempting to read/write on /home would lockup in an uninterruptable sleep state. This is kernel-2.6.30-1.fc12.x86_64. ---cut--- Jun 22 20:49:03 localhost kernel: mpage_da_map_blocks block allocation failed for inode 528965 at logical offset 607602 with max blocks 5 with error -28 Jun 22 20:49:03 localhost kernel: This should not happen.!! Data will be lost Jun 22 20:49:03 localhost kernel: Total free blocks count 0 Jun 22 20:49:03 localhost kernel: Free/Dirty block details Jun 22 20:49:03 localhost kernel: free_blocks=134303 Jun 22 20:49:03 localhost kernel: dirty_blocks=52621 Jun 22 20:49:03 localhost kernel: Block reservation details Jun 22 20:49:03 localhost kernel: i_reserved_data_blocks=52465 Jun 22 20:49:03 localhost kernel: i_reserved_meta_blocks=156 Jun 22 20:49:03 localhost kernel: mpage_da_map_blocks block allocation failed for inode 528965 at logical offset 608030 with max blocks 8 with error -28 Jun 22 20:49:03 localhost kernel: This should not happen.!! Data will be lost Jun 22 20:49:03 localhost kernel: Total free blocks count 0 Jun 22 20:49:03 localhost kernel: Free/Dirty block details Jun 22 20:49:03 localhost kernel: free_blocks=134303 Jun 22 20:49:03 localhost kernel: dirty_blocks=52621 Jun 22 20:49:03 localhost kernel: Block reservation details Jun 22 20:49:03 localhost kernel: i_reserved_data_blocks=52465 Jun 22 20:49:03 localhost kernel: i_reserved_meta_blocks=156 Jun 22 20:49:09 localhost kernel: mpage_da_map_blocks block allocation failed for inode 125287 at logical offset 4 with max blocks 1 with error -28 Jun 22 20:49:09 localhost kernel: This should not happen.!! Data will be lost Jun 22 20:49:09 localhost kernel: Total free blocks count 0 Jun 22 20:49:09 localhost kernel: Free/Dirty block details Jun 22 20:49:09 localhost kernel: free_blocks=134303 Jun 22 20:49:09 localhost kernel: dirty_blocks=52624 Jun 22 20:49:09 localhost kernel: Block reservation details Jun 22 20:49:09 localhost kernel: i_reserved_data_blocks=1 Jun 22 20:49:09 localhost kernel: i_reserved_meta_blocks=2 Jun 22 20:52:36 localhost libvirtd: 20:52:36.573: warning : qemudDispatchSignalEvent:362 : Shutting down on signal 15 ---cut--- -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
