[Ocfs2-devel] [PATCH] ocfs2: fix panic due to unrecovered local alloc
Junxiao Bi
junxiao.bi at oracle.com
Thu Nov 15 23:33:35 PST 2018
mount.ocfs2 ignore the inconsistent error that journal is clean but
local alloc is unrecovered. After mount, local alloc not empty, then
reserver cluster didn't alloc a new local alloc window, reserveration
map is empty(ocfs2_reservation_map.m_bitmap_len = 0), that triggered
the following panic.
This issue was ever reported at https://oss.oracle.com/pipermail/ocfs2-devel/2015-May/010854.html
and was advised to fixed during mount. But this is a very unusual
inconsistent state, usually journal dirty flag should be cleared
at the last stage of umount until every other things go right.
We may need do further debug to check that. Any way to avoid
possible futher corruption, mount should be abort and fsck
should be run.
[ 44.760372] (mount.ocfs2,1765,1):ocfs2_load_local_alloc:353 ERROR: Local alloc hasn't been recovered!
found = 6518, set = 6518, taken = 8192, off = 15912372
[ 44.780879] ocfs2: Mounting device (202,64) on (node 0, slot 3) with ordered data mode.
[ 44.872435] o2dlm: Joining domain 89CEAC63CC4F4D03AC185B44E0EE0F3F ( 0 1 2 3 4 5 6 8 ) 8 nodes
[ 44.902414] ocfs2: Mounting device (202,80) on (node 0, slot 3) with ordered data mode.
[ 46.066444] o2hb: Region 89CEAC63CC4F4D03AC185B44E0EE0F3F (xvdf) is now a quorum device
[ 178.576454] o2net: Accepted connection from node yvwsoa17p (num 7) at 172.22.77.88:7777
[ 191.175670] o2dlm: Node 7 joins domain 64FE421C8C984E6D96ED12C55FEE2435 ( 0 1 2 3 4 5 6 7 8 ) 9 nodes
[ 191.318225] o2dlm: Node 7 joins domain 89CEAC63CC4F4D03AC185B44E0EE0F3F ( 0 1 2 3 4 5 6 7 8 ) 9 nodes
[ 838.049923] ------------[ cut here ]------------
[ 838.050005] kernel BUG at fs/ocfs2/reservations.c:507!
[ 838.050005] invalid opcode: 0000 [#1] SMP
[ 838.050005] Modules linked in: ocfs2 rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs fscache lockd grace ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs sunrpc ipt_REJECT nf_reject_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 ovmapi ppdev parport_pc parport xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea acpi_cpufreq pcspkr i2c_piix4 i2c_core sg ext4 jbd2 mbcache2 sr_mod cdrom xen_blkfront pata_acpi ata_generic ata_piix floppy dm_mirror dm_region_hash dm_log dm_mod
[ 838.050005] CPU: 0 PID: 4349 Comm: startWebLogic.s Not tainted 4.1.12-124.19.2.el6uek.x86_64 #2
[ 838.050005] Hardware name: Xen HVM domU, BIOS 4.4.4OVM 09/06/2018
[ 838.050005] task: ffff8803fb04e200 ti: ffff8800ea4d8000 task.ti: ffff8800ea4d8000
[ 838.050005] RIP: 0010:[<ffffffffa05e96a8>] [<ffffffffa05e96a8>] __ocfs2_resv_find_window+0x498/0x760 [ocfs2]
[ 838.050005] RSP: 0018:ffff8800ea4db668 EFLAGS: 00010246
[ 838.050005] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 838.050005] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 838.050005] RBP: ffff8800ea4db708 R08: 0000000000000000 R09: ffff8800ea4db6d0
[ 838.050005] R10: ffff8803f5c74030 R11: 0000000000000000 R12: 0000000000000000
[ 838.050005] R13: 0000000000000000 R14: ffff8800ea4db801 R15: ffff8800eab9c000
[ 838.050005] FS: 00007f1e92306700(0000) GS:ffff8803ff200000(0000) knlGS:0000000000000000
[ 838.050005] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 838.050005] CR2: 00000000018e5fbc CR3: 00000003f63d4000 CR4: 0000000000160670
[ 838.050005] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 838.050005] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 838.050005] Stack:
[ 838.050005] ffff8800ea4db6d4 ffff8803f5fd3070 ffff8803f5c74030 ffff8803fba5e7b8
[ 838.050005] ffffffffa064b4f0 ffff8803fb9ef0f8 ffff8800eb638ee8 ffff8803f5fd3070
[ 838.050005] ffff8800ea4db718 ffff8800eab9c230 ffff880000000010 0000000000000000
[ 838.050005] Call Trace:
[ 838.050005] [<ffffffffa05e9c4d>] ocfs2_resmap_resv_bits+0x10d/0x400 [ocfs2]
[ 838.050005] [<ffffffffa05c98c2>] ? ocfs2_journal_dirty+0x32/0xa0 [ocfs2]
[ 838.050005] [<ffffffffa060e880>] ? olq_update_info+0x50/0x50 [ocfs2]
[ 838.050005] [<ffffffffa05cf3f0>] ocfs2_claim_local_alloc_bits+0xd0/0x640 [ocfs2]
[ 838.050005] [<ffffffffa05f3f38>] __ocfs2_claim_clusters+0x178/0x360 [ocfs2]
[ 838.050005] [<ffffffffa05f687f>] ocfs2_claim_clusters+0x1f/0x30 [ocfs2]
[ 838.050005] [<ffffffffa05980e4>] ocfs2_convert_inline_data_to_extents+0x634/0xa60 [ocfs2]
[ 838.050005] [<ffffffffa060cf14>] ? ocfs2_buffer_cached.isra.6+0xb4/0x230 [ocfs2]
[ 838.050005] [<ffffffffa060d965>] ? ocfs2_set_buffer_uptodate+0x25/0x600 [ocfs2]
[ 838.050005] [<ffffffff81241f44>] ? __find_get_block+0xc4/0x140
[ 838.050005] [<ffffffff811eabe6>] ? kmem_cache_alloc_trace+0x246/0x280
[ 838.050005] [<ffffffffa059d436>] ocfs2_write_begin_nolock+0x1c6/0x1da0 [ocfs2]
[ 838.050005] [<ffffffffa05c0f60>] ? ocfs2_inode_cache_io_unlock+0x20/0x20 [ocfs2]
[ 838.050005] [<ffffffffa05b548b>] ? ocfs2_inode_lock_full_nested+0x2eb/0x520 [ocfs2]
[ 838.050005] [<ffffffffa0624f16>] ? ocfs2_xattr_get+0xa6/0x150 [ocfs2]
[ 838.050005] [<ffffffffa059f14e>] ocfs2_write_begin+0x13e/0x230 [ocfs2]
[ 838.050005] [<ffffffff8118c49f>] generic_perform_write+0xbf/0x1c0
[ 838.050005] [<ffffffff812282fe>] ? dentry_needs_remove_privs.part.11+0x1e/0x30
[ 838.050005] [<ffffffff8118e79c>] __generic_file_write_iter+0x19c/0x1d0
[ 838.050005] [<ffffffffa05b5119>] ? ocfs2_inode_unlock+0xa9/0x130 [ocfs2]
[ 838.050005] [<ffffffffa05bfba9>] ocfs2_file_write_iter+0x589/0x1360 [ocfs2]
[ 838.050005] [<ffffffff811bbd35>] ? do_wp_page+0x265/0x680
[ 838.050005] [<ffffffff8124d534>] ? fsnotify+0x384/0x530
[ 838.050005] [<ffffffff8120af08>] __vfs_write+0xb8/0x110
[ 838.050005] [<ffffffff8120b5d9>] vfs_write+0xa9/0x1b0
[ 838.050005] [<ffffffff816ee4a6>] ? mutex_lock+0x16/0x40
[ 838.050005] [<ffffffff8120c3e6>] SyS_write+0x46/0xb0
[ 838.050005] [<ffffffff816f13df>] ? system_call_after_swapgs+0xe9/0x190
[ 838.050005] [<ffffffff816f13d8>] ? system_call_after_swapgs+0xe2/0x190
[ 838.050005] [<ffffffff816f13d1>] ? system_call_after_swapgs+0xdb/0x190
[ 838.050005] [<ffffffff816f149e>] system_call_fastpath+0x18/0xd7
[ 838.050005] Code: ff ff 8b 75 b8 39 75 b0 8b 45 c8 89 45 98 0f 84 e5 fe ff ff 45 8b 74 24 18 41 8b 54 24 1c e9 56 fc ff ff 85 c0 0f 85 48 ff ff ff <0f> 0b 48 8b 05 cf c3 de ff 48 ba 00 00 00 00 00 00 00 10 48 85
[ 838.050005] RIP [<ffffffffa05e96a8>] __ocfs2_resv_find_window+0x498/0x760 [ocfs2]
[ 838.050005] RSP <ffff8800ea4db668>
[ 838.202227] ---[ end trace 566f07529f2edf3c ]---
[ 838.204664] Kernel panic - not syncing: Fatal exception
[ 838.205656] Kernel Offset: disabled
Signed-off-by: Junxiao Bi <junxiao.bi at oracle.com>
---
fs/ocfs2/localalloc.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 7642b6712c39..755ec2aa2db0 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -345,13 +345,18 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
if (num_used
|| alloc->id1.bitmap1.i_used
|| alloc->id1.bitmap1.i_total
- || la->la_bm_off)
- mlog(ML_ERROR, "Local alloc hasn't been recovered!\n"
+ || la->la_bm_off) {
+ mlog(ML_ERROR, "inconsistent detected, clean journal with"
+ "unrecovered local alloc, please run fsck.ocfs2!\n"
"found = %u, set = %u, taken = %u, off = %u\n",
num_used, le32_to_cpu(alloc->id1.bitmap1.i_used),
le32_to_cpu(alloc->id1.bitmap1.i_total),
OCFS2_LOCAL_ALLOC(alloc)->la_bm_off);
+ status = -EINVAL;
+ goto bail;
+ }
+
osb->local_alloc_bh = alloc_bh;
osb->local_alloc_state = OCFS2_LA_ENABLED;
--
2.17.1
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