https://bugzilla.kernel.org/show_bug.cgi?id=107301 Bug ID: 107301 Summary: system hang during ext4 xattr operation Product: File System Version: 2.5 Kernel Version: 4.2.3 3.19 3.16 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: sileht@xxxxxxxxxx Regression: No Created attachment 192191 --> https://bugzilla.kernel.org/attachment.cgi?id=192191&action=edit dmesg received via netconsole before the system hang Hi, We are running a ceph cluster on ext4 filesystem, we recently got a hardware failure, the ceph recovery process provokes a huge amount of data write on all our ext4 filesystems (~40 disks). Now, we are experienced random nodes hang, we catch some partial backtrace (that can be found on the ceph bug tracker). And recently we got the full dmesg log via netconsole (attached to this BZ). When the freeze occurs, it seems ceph processes lockup all the CPUs, each CPUs backtrace is related to a xattr operation. bug report on ceph side: http://tracker.ceph.com/issues/13662 We have some nodes on debian and some other on ubuntu, we tried kernels 3.16, 3.19, 4.2.3. The issue occurs with all of them. Cheers, -- 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
