There is a patch for a btrfs bug in the clone ioctl reservation that hasn't made it upstream yet. See http://marc.info/?l=linux-btrfs&m=131291225105499&w=2 That should sort you out! sage On Fri, 16 Sep 2011, Martin Mailand wrote: > Hi, > should rbd snap work? I created a snapshot and then I want to list it. > rbd snap create --snap=2011091601 lenny1 > rbd snap ls lenny1 > > But the ls command does not come back and I get a Kernel bug on 2 OSD. > It is reproducible. > > > [ 7658.115729] ------------[ cut here ]------------ > [ 7658.115779] kernel BUG at fs/btrfs/delayed-inode.c:1693! > [ 7658.115812] invalid opcode: 0000 [#1] SMP > [ 7658.115846] CPU 1 > [ 7658.115861] Modules linked in: radeon ttm drm_kms_helper drm i2c_algo_bit > psmouse k8temp sp5100_tco edac_core edac_mce_amd serio_raw shpchp i2c_piix4 lp > parport ahci pata_atiixp libahci btrfs e1000e zlib_deflate libcrc32c > [ 7658.116080] > [ 7658.116095] Pid: 1418, comm: cosd Tainted: G W 3.1.0-rc6 #1 > MICRO-STAR INTERNATIONAL CO., LTD MS-96B3/MS-96B3 > [ 7658.116167] RIP: 0010:[<ffffffffa007ffd0>] [<ffffffffa007ffd0>] > btrfs_delayed_update_inode+0x2a0/0x2b0 [btrfs] > [ 7658.116278] RSP: 0018:ffff8801160efbc8 EFLAGS: 00010286 > [ 7658.116311] RAX: 00000000ffffffe4 RBX: ffff8800777c0120 RCX: > 0000000000018000 > [ 7658.116351] RDX: 000000000000f7e5 RSI: 0000000000018000 RDI: > ffff880116b10160 > [ 7658.116389] RBP: ffff8801160efc08 R08: ffffe8ffffc81a40 R09: > ffff8800886826a0 > [ 7658.116428] R10: 0000000000000000 R11: 0000000000000000 R12: > ffff880001e4af50 > [ 7658.116467] R13: ffff8800777c0168 R14: ffff880117122ea0 R15: > ffff880115113000 > [ 7658.116507] FS: 00007f80e30eb700(0000) GS:ffff88011fc80000(0000) > knlGS:0000000000000000 > [ 7658.116550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 7658.116583] CR2: ffffffffff600400 CR3: 0000000116015000 CR4: > 00000000000006e0 > [ 7658.116623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 7658.116662] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 7658.116700] Process cosd (pid: 1418, threadinfo ffff8801160ee000, task > ffff880116aeade0) > [ 7658.116744] Stack: > [ 7658.116759] 0000000000000282 0000000000018000 ffff8801160efc18 > ffff880001e4af50 > [ 7658.116817] ffff880117122ea0 ffff8800391b01e0 ffff8801171113f0 > 0000000000000000 > [ 7658.116875] ffff8801160efc58 ffffffffa003f353 ffff8801160efc38 > ffffffffa00677f8 > [ 7658.116933] Call Trace: > [ 7658.116978] [<ffffffffa003f353>] btrfs_update_inode+0x53/0x160 [btrfs] > [ 7658.117039] [<ffffffffa00677f8>] ? btrfs_tree_unlock+0x78/0xb0 [btrfs] > [ 7658.117099] [<ffffffffa0063184>] btrfs_ioctl_clone+0x9b4/0xd20 [btrfs] > [ 7658.117164] [<ffffffffa00666f6>] btrfs_ioctl+0x306/0xe20 [btrfs] > [ 7658.117204] [<ffffffff81175f32>] ? do_filp_open+0x42/0xa0 > [ 7658.117240] [<ffffffff81178048>] do_vfs_ioctl+0x98/0x540 > [ 7658.117277] [<ffffffff81156f40>] ? kmem_cache_free+0x20/0x100 > [ 7658.117313] [<ffffffff81178581>] sys_ioctl+0x91/0xa0 > [ 7658.117347] [<ffffffff815f02c2>] system_call_fastpath+0x16/0x1b > [ 7658.117381] Code: 00 03 00 00 8d 0c 49 48 89 ca 48 89 4d c8 e8 f8 7d fa ff > 85 c0 48 8b 4d c8 75 10 48 89 4b 08 e9 cc fd ff ff 0f 1f 80 00 00 00 00 <0f> > 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 > [ 7658.117814] RIP [<ffffffffa007ffd0>] > btrfs_delayed_update_inode+0x2a0/0x2b0 [btrfs] > [ 7658.117883] RSP <ffff8801160efbc8> > [ 7658.122364] ---[ end trace c8a580615cad6cbe ]--- > > Best Regards, > Martin > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
