Hi, Apologies if this is already a known bug (though I didn't find it). If we try to map a device that doesn't exist, we get an immediate and reproduceable kernel BUG (see the P.S.). We hit this by accident because we forgot to add the --pool <ourpool>. This works: [root@afs245 /]# rbd map afs254-vicepa --pool afs --id afs --keyring /etc/ceph/ceph.client.afs.keyring [root@afs245 /]# rbd showmapped id pool image snap device 1 afs afs254-vicepa - /dev/rbd1 But this BUGS: [root@afs245 /]# rbd map afs254-vicepa BUG... Any clue? Cheers, Dan, CERN IT Mar 25 11:48:25 afs245 kernel: kernel BUG at mm/slab.c:3130! Mar 25 11:48:25 afs245 kernel: invalid opcode: 0000 [#1] SMP Mar 25 11:48:25 afs245 kernel: Modules linked in: rbd libceph libcrc32c cpufreq_ondemand ipv6 ext2 iTCO_wdt iTCO_vendor_support coretemp acpi_cpufreq freq_tabl e mperf kvm_intel kvm crc32c_intel ghash_clmulni_intel microcode pcspkr serio_raw i2c_i801 lpc_ich joydev e1000e ses enclosure sg ixgbe hwmon dca ptp pps_core mdio ext3 jbd mbcache sd_mod crc_t10dif aesni_intel ablk_helper cryptd lrw aes_x86_64 xts gf128mul ahci libahci 3w_9xxx mpt2sas scsi_transport_sas raid_class v ideo mgag200 ttm drm_kms_helper dm_mirror dm_region_hash dm_log dm_mod Mar 25 11:48:25 afs245 kernel: CPU 3 Mar 25 11:48:25 afs245 kernel: Pid: 7444, comm: rbd Not tainted 3.8.4-1.el6.elrepo.x86_64 #1 Supermicro X9SCL/X9SCM/X9SCL/X9SCM Mar 25 11:48:25 afs245 kernel: RIP: 0010:[<ffffffff81179790>] [<ffffffff81179790>] cache_alloc_refill+0x270/0x3c0 Mar 25 11:48:25 afs245 kernel: RSP: 0018:ffff8808028e5c48 EFLAGS: 00010082 Mar 25 11:48:25 afs245 kernel: RAX: 00000000ffffffff RBX: ffff88082f000e00 RCX: ffff88082f000e00 Mar 25 11:48:25 afs245 kernel: RDX: ffff8808055fba80 RSI: ffff88082f0028d0 RDI: ffff88082f002900 Mar 25 11:48:25 afs245 kernel: RBP: ffff8808028e5ca8 R08: ffff88082f0028e0 R09: ffff8808010068c0 Mar 25 11:48:25 afs245 kernel: R10: dead000000200200 R11: 0000000000000003 R12: 0000000000000000 Mar 25 11:48:25 afs245 kernel: R13: ffff880807a71ec0 R14: ffff88082f0028c0 R15: 0000000000000004 Mar 25 11:48:25 afs245 kernel: FS: 00007ff85056e760(0000) GS:ffff88082fd80000(0000) knlGS:0000000000000000 Mar 25 11:48:25 afs245 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 25 11:48:25 afs245 kernel: CR2: 0000000000428220 CR3: 00000007eee7e000 CR4: 00000000001407e0 Mar 25 11:48:25 afs245 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Mar 25 11:48:25 afs245 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Mar 25 11:48:25 afs245 kernel: Process rbd (pid: 7444, threadinfo ffff8808028e4000, task ffff8807ef6fb520) Mar 25 11:48:25 afs245 kernel: Stack: Mar 25 11:48:25 afs245 kernel: ffff8808028e5d68 ffffffff8112fd5d ffff8808028e5de8 ffff880800ac7000 Mar 25 11:48:25 afs245 kernel: ffffffff028e5c78 00000000000080d0 ffff8808028e5fd8 ffff88082f000e00 Mar 25 11:48:25 afs245 kernel: 0000000000001078 0000000000000010 00000000000080d0 00000000000080d0 Mar 25 11:48:25 afs245 kernel: Call Trace: Mar 25 11:48:25 afs245 kernel: [<ffffffff8112fd5d>] ? get_page_from_freelist+0x22d/0x710 Mar 25 11:48:25 afs245 kernel: [<ffffffff8117ab08>] __kmalloc+0x168/0x340 Mar 25 11:48:25 afs245 kernel: [<ffffffffa0380a35>] ? ceph_parse_options+0x65/0x410 [libceph] Mar 25 11:48:25 afs245 kernel: [<ffffffffa03ad2a0>] ? kzalloc+0x20/0x20 [rbd] Mar 25 11:48:25 afs245 kernel: [<ffffffffa0380a35>] ceph_parse_options+0x65/0x410 [libceph] Mar 25 11:48:25 afs245 kernel: [<ffffffff8117a2a4>] ? kmem_cache_alloc_trace+0x214/0x2e0 Mar 25 11:48:25 afs245 kernel: [<ffffffff8117ac17>] ? __kmalloc+0x277/0x340 Mar 25 11:48:25 afs245 kernel: [<ffffffffa03ad28f>] ? kzalloc+0xf/0x20 [rbd] Mar 25 11:48:25 afs245 kernel: [<ffffffffa03ae96a>] rbd_add_parse_args+0x1fa/0x250 [rbd] Mar 25 11:48:25 afs245 kernel: [<ffffffffa03b18d4>] rbd_add+0x84/0x2b4 [rbd] Mar 25 11:48:25 afs245 kernel: [<ffffffff813bc9a7>] bus_attr_store+0x27/0x30 Mar 25 11:48:25 afs245 kernel: [<ffffffff81205d6f>] sysfs_write_file+0xef/0x170 Mar 25 11:48:25 afs245 kernel: [<ffffffff81191904>] vfs_write+0xb4/0x130 Mar 25 11:48:25 afs245 kernel: [<ffffffff811920af>] sys_write+0x5f/0xa0 Mar 25 11:48:25 afs245 kernel: [<ffffffff810df656>] ? __audit_syscall_exit+0x246/0x2f0 Mar 25 11:48:25 afs245 kernel: [<ffffffff815e1499>] system_call_fastpath+0x16/0x1b Mar 25 11:48:25 afs245 kernel: Code: 48 8b 00 48 8b 55 b0 8b 4d b8 48 8b 75 a8 4c 8b 45 a0 4c 8b 4d c0 a8 40 0f 84 b8 fe ff ff 49 83 cf 01 e9 af fe ff ff 0f 0b eb fe <0f> 0b eb fe 8b 75 c8 8b 55 cc 31 c9 48 89 df 81 ce 00 12 04 00 Mar 25 11:48:25 afs245 kernel: RIP [<ffffffff81179790>] cache_alloc_refill+0x270/0x3c0 Mar 25 11:48:25 afs245 kernel: RSP <ffff8808028e5c48> Mar 25 11:48:25 afs245 kernel: ---[ end trace 46b67e5b8b69abcb ]--- _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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