Created attachment 1108715 [details] core dump 1 Description of problem: We've recently upgraded from gluster 3.6.6 to 3.7.6 (3.7.6-1 rpms hosted on download.gluster.org) and have started encountering dmesg page allocation errors. It appears that glusterfsd now sometimes fills up the cache completely and crashes with a page allocation failure. Hosts are all Scientific Linux 6.6 (kernel is 2.6.32-573.12.1.el6.x86_64) connected via infiniband (IP over IB) and these errors occur consistently on two separate gluster pools. Version-Release number of selected component (if applicable): glusterfs 3.7.6 built on Nov 9 2015 15:19:41 Additional info: I will attach core dumps. Volume info: Volume Name: gfsbackup Type: Distribute Volume ID: e78d5123-d9bc-4d88-9c73-61d28abf0b41 Status: Started Number of Bricks: 7 Transport-type: tcp Bricks: Brick1: gfsib01bkp.corvidtec.com:/data/brick01bkp/gfsbackup Brick2: gfsib01bkp.corvidtec.com:/data/brick02bkp/gfsbackup Brick3: gfsib02bkp.corvidtec.com:/data/brick01bkp/gfsbackup Brick4: gfsib02bkp.corvidtec.com:/data/brick02bkp/gfsbackup Brick5: gfsib02bkp.corvidtec.com:/data/brick03bkp/gfsbackup Brick6: gfsib02bkp.corvidtec.com:/data/brick04bkp/gfsbackup Brick7: gfsib02bkp.corvidtec.com:/data/brick05bkp/gfsbackup Stack trace from the dmesg: [1458118.134697] glusterfsd: page allocation failure. order:5, mode:0x20 [1458118.134701] Pid: 6010, comm: glusterfsd Not tainted 2.6.32-573.3.1.el6.x86_64 #1 [1458118.134702] Call Trace: [1458118.134714] [<ffffffff8113770c>] ? __alloc_pages_nodemask+0x7dc/0x950 [1458118.134728] [<ffffffffa0321800>] ? mlx4_ib_post_send+0x680/0x1f90 [mlx4_ib] [1458118.134733] [<ffffffff81176e92>] ? kmem_getpages+0x62/0x170 [1458118.134735] [<ffffffff81177aaa>] ? fallback_alloc+0x1ba/0x270 [1458118.134736] [<ffffffff811774ff>] ? cache_grow+0x2cf/0x320 [1458118.134738] [<ffffffff81177829>] ? ____cache_alloc_node+0x99/0x160 [1458118.134743] [<ffffffff8145f732>] ? pskb_expand_head+0x62/0x280 [1458118.134744] [<ffffffff81178479>] ? __kmalloc+0x199/0x230 [1458118.134746] [<ffffffff8145f732>] ? pskb_expand_head+0x62/0x280 [1458118.134748] [<ffffffff8146001a>] ? __pskb_pull_tail+0x2aa/0x360 [1458118.134751] [<ffffffff8146f389>] ? harmonize_features+0x29/0x70 [1458118.134753] [<ffffffff8146f9f4>] ? dev_hard_start_xmit+0x1c4/0x490 [1458118.134758] [<ffffffff8148cf8a>] ? sch_direct_xmit+0x15a/0x1c0 [1458118.134759] [<ffffffff8146ff68>] ? dev_queue_xmit+0x228/0x320 [1458118.134762] [<ffffffff8147665d>] ? neigh_connected_output+0xbd/0x100 [1458118.134766] [<ffffffff814abc67>] ? ip_finish_output+0x287/0x360 [1458118.134767] [<ffffffff814abdf8>] ? ip_output+0xb8/0xc0 [1458118.134769] [<ffffffff814ab04f>] ? __ip_local_out+0x9f/0xb0 [1458118.134770] [<ffffffff814ab085>] ? ip_local_out+0x25/0x30 [1458118.134772] [<ffffffff814ab580>] ? ip_queue_xmit+0x190/0x420 [1458118.134773] [<ffffffff81137059>] ? __alloc_pages_nodemask+0x129/0x950 [1458118.134776] [<ffffffff814c0c54>] ? tcp_transmit_skb+0x4b4/0x8b0 [1458118.134778] [<ffffffff814c319a>] ? tcp_write_xmit+0x1da/0xa90 [1458118.134779] [<ffffffff81178cbd>] ? __kmalloc_node+0x4d/0x60 [1458118.134780] [<ffffffff814c3a80>] ? tcp_push_one+0x30/0x40 [1458118.134782] [<ffffffff814b410c>] ? tcp_sendmsg+0x9cc/0xa20 [1458118.134786] [<ffffffff8145836b>] ? sock_aio_write+0x19b/0x1c0 [1458118.134788] [<ffffffff814581d0>] ? sock_aio_write+0x0/0x1c0 [1458118.134791] [<ffffffff8119169b>] ? do_sync_readv_writev+0xfb/0x140 [1458118.134797] [<ffffffff810a14b0>] ? autoremove_wake_function+0x0/0x40 [1458118.134801] [<ffffffff8123e92f>] ? selinux_file_permission+0xbf/0x150 [1458118.134804] [<ffffffff812316d6>] ? security_file_permission+0x16/0x20 [1458118.134806] [<ffffffff81192746>] ? do_readv_writev+0xd6/0x1f0 [1458118.134807] [<ffffffff811928a6>] ? vfs_writev+0x46/0x60 [1458118.134809] [<ffffffff811929d1>] ? sys_writev+0x51/0xd0 [1458118.134812] [<ffffffff810e88ae>] ? __audit_syscall_exit+0x25e/0x290 [1458118.134816] [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b
Created attachment 1108716 [details] core dump 2
Created attachment 1108717 [details] core dump 3
Created attachment 1108718 [details] core dump 4
Created attachment 1108719 [details] dmesg from one of the peers
As mentioned in the below mail link, the fix is available in 3.7.7 release - http://thread.gmane.org/gmane.comp.file-systems.gluster.devel/13281 Closing the bug
Pranith confirmed the fix for 3.7.7 in this email: http://thread.gmane.org/gmane.comp.file-systems.gluster.devel/13281/focus=13335 The patch http://review.gluster.org/12312 got merged for bug 1269702. *** This bug has been marked as a duplicate of bug 1269702 ***