In the process of __ocfs2_journal_access，
If LUNs can not be accessed for some reasons（such as storage network fails
)，then BUG.
When disk timeout , the server of fence ( emergency_restart() ) will fail,
only can recovery by the reset of ILO.
So we have to return the error -EIO, and avoid to BUG(panic).
Moreover, whether all BUG_ON(!buffer_uptodate(bh)) in the ocfs2 file system can
handle in the same way??
Finally, any feedback about this process (positive or negative) would be
greatly appreciated.
--- journal.c 2015-05-18 00:55:21.000000000 +0800
+++ journal.c.bk 2015-06-09 17:37:13.531333444 +0800
@@ -670,7 +670,7 @@
mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n");
mlog(ML_ERROR, "b_blocknr=%llu\n",
(unsigned long long)bh->b_blocknr);
- BUG();
+ return -EIO;
}
/* Set the current transaction information on the ci so
Jun 9 15:20:23 cvk68 kernel: [76994.822719]
(pool,13568,12):__ocfs2_journal_access:664 ERROR: giving me a buffer that's not
uptodate!
Jun 9 15:20:23 cvk68 kernel: [76994.822721]
(pool,13568,12):__ocfs2_journal_access:666 ERROR: b_blocknr=33030401
Jun 9 15:20:23 cvk68 kernel: [76994.822716] Read(10): 28 00 00 00 29 80 00 00
1f 00
Jun 9 15:20:23 cvk68 kernel: [76994.822729]
(ksoftirqd/25,263,25):o2hb_bio_end_io:381 ERROR: IO Error -5
Jun 9 15:20:23 cvk68 kernel: [76994.822737] ------------[ cut here ]------------
Jun 9 15:20:23 cvk68 kernel: [76994.822740]
(o2hb-771CAAF371,7589,9):o2hb_do_disk_heartbeat:993 ERROR: status = -5
Jun 9 15:20:23 cvk68 kernel: [76994.822746] Kernel BUG at ffffffffa048b15d
[verbose debug info unavailable]
Jun 9 15:20:23 cvk68 kernel: [76994.822748] invalid opcode: 0000 [#1] SMP
Jun 9 15:20:23 cvk68 kernel: [76994.822751] sd 13:0:0:0: rejecting I/O to
offline device
Jun 9 15:20:23 cvk68 kernel: [76994.822753]
(o2hb-771CAAF371,7589,9):o2hb_bio_end_io:381 ERROR: IO Error -5
Jun 9 15:20:23 cvk68 kernel: [76994.822755]
(o2hb-771CAAF371,7589,9):o2hb_do_disk_heartbeat:993 ERROR: status = -5
Jun 9 15:20:23 cvk68 kernel: [76994.822751] Modules linked in:
ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) ebtable_nat(F)
ebtables(F) x_tables(F) ocfs2(OF) quota_tree(F) cls_u32(F) sch_sfq(F)
sch_htb(F) drbd(F) lru_cache(F) 8021q(F) mrp(F) garp(F) stp(F) llc(F)
vhost_net(F) macvtap(F) macvlan(F) vhost(F) kvm_intel(F) kvm(F) ib_iser(F)
rdma_cm(F) ib_cm(F) iw_cm(F) ib_sa(F) ib_mad(F) ib_core(F) ib_addr(F)
iscsi_tcp(F) libiscsi_tcp(F) ocfs2_dlmfs(OF) ocfs2_stack_o2cb(OF) ocfs2_dlm(OF)
ocfs2_nodemanager(OF) ocfs2_stackglue(OF) configfs(F) openvswitch(OF)
libcrc32c(F) gre(F) nfsd(F) nfs_acl(F) auth_rpcgss(F) nfs(F) fscache(F)
lockd(F) sunrpc(F) psmouse(F) sb_edac(F) ioatdma(F) edac_core(F) gpio_ich(F)
dm_multipath(F) serio_raw(F) scsi_dh(F) dca(F) hpwdt(F) hpilo(F) mac_hid(F)
lpc_ich(F) video(F) acpi_power_meter(F) lp(F) parport(F) be2iscsi(F)
iscsi_boot_sysfs(F) libiscsi(F) hpsa(F) scsi_transport_iscsi(F) be2net(F)
nbd(F) [last unloaded: ipmi_si]
Jun 9 15:20:23 cvk68 kernel: [76994.822802] CPU: 12 PID: 13568 Comm: pool
Tainted: GF O 3.13.6 #1
Jun 9 15:20:23 cvk68 kernel: [76994.822804] Hardware name: H3C FlexServer B390,
BIOS I31 02/10/2014
Jun 9 15:20:23 cvk68 kernel: [76994.822806] task: ffff880611451810 ti:
ffff8802cf8da000 task.ti: ffff8802cf8da000
Jun 9 15:20:23 cvk68 kernel: [76994.822808] RIP: 0010:[<ffffffffa048b15d>]
[<ffffffffa048b15d>] __ocfs2_journal_access+0x30d/0x350 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822832] RSP: 0018:ffff8802cf8dbb78 EFLAGS:
00010292
Jun 9 15:20:23 cvk68 kernel: [76994.822834] RAX: 0000000000000044 RBX:
1000000000000000 RCX: 000000000000c5c0
Jun 9 15:20:23 cvk68 kernel: [76994.822836] RDX: 0000000000000082 RSI:
0000000065ee65ea RDI: 0000000000000246
Jun 9 15:20:23 cvk68 kernel: [76994.822838] RBP: ffff8802cf8dbbf8 R08:
ffffffff81ec09a8 R09: ffffffff81ee8f20
Jun 9 15:20:23 cvk68 kernel: [76994.822840] R10: 0000000000000064 R11:
0000000000017adc R12: ffff880604b31138
Jun 9 15:20:23 cvk68 kernel: [76994.822842] R13: ffff880611451810 R14:
ffff880611451ce0 R15: 0000000000000001
Jun 9 15:20:23 cvk68 kernel: [76994.822845] FS: 00007f9bcffff700(0000)
GS:ffff880c3f880000(0000) knlGS:0000000000000000
Jun 9 15:20:23 cvk68 kernel: [76994.822847] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jun 9 15:20:23 cvk68 kernel: [76994.822849] CR2: 000000000133b7b8 CR3:
000000061168a000 CR4: 00000000001427e0
Jun 9 15:20:23 cvk68 kernel: [76994.822851] Stack:
Jun 9 15:20:23 cvk68 kernel: [76994.822852] 0000000001f80101 000000000000000b
ffff880c1cc84030 0000000000000000
Jun 9 15:20:23 cvk68 kernel: [76994.822857] ffffffffa0505430 ffff880c1d183000
ffff880c1cc84030 0000000001f80101
Jun 9 15:20:23 cvk68 kernel: [76994.822861] 0000000001f80101 00001000a0473010
0000000000000000 ffff880c1dd35000
Jun 9 15:20:23 cvk68 kernel: [76994.822865] Call Trace:
Jun 9 15:20:23 cvk68 kernel: [76994.822878] [<ffffffffa048bf98>]
ocfs2_journal_access_di+0x18/0x20 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822888] [<ffffffffa0463cf3>]
ocfs2_write_end_nolock+0x63/0x430 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822897] [<ffffffffa0463c42>] ?
ocfs2_write_begin+0x1e2/0x230 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822906] [<ffffffffa04640e6>]
ocfs2_write_end+0x26/0x50 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822910] [<ffffffff81153495>]
generic_file_buffered_write+0x165/0x280
Jun 9 15:20:23 cvk68 kernel: [76994.822921] [<ffffffffa048453f>]
ocfs2_file_aio_write+0x74f/0x790 [ocfs2]
Jun 9 15:20:23 cvk68 kernel: [76994.822925] [<ffffffff811c14ba>]
do_sync_write+0x5a/0x90
Jun 9 15:20:23 cvk68 kernel: [76994.822928] [<ffffffff811c1fc5>]
vfs_write+0xc5/0x1f0
Jun 9 15:20:23 cvk68 kernel: [76994.822931] [<ffffffff811c24c2>]
SyS_write+0x52/0xa0
Jun 9 15:20:23 cvk68 kernel: [76994.822934] [<ffffffff8176106d>]
system_call_fastpath+0x1a/0x1f
Jun 9 15:20:23 cvk68 kernel: [76994.822936] Code: 8b 95 fc 02 00 00 48 63 c9 48
89 04 24 41 b9 9a 02 00 00 49 c7 c0 e0 dc 4e a0 4c 89 f6 48 c7 c7 18 a4 4f a0
31 c0 e8 29 09 2c e1 <0f> 0b 65 8b 0c 25 64 b0 00 00 65 48 8b 34 25 c0 c7 00 00
8b 96
Jun 9 15:20:23 cvk68 kernel: [76994.822961] RIP [<ffffffffa048b15d>]
__ocfs2_journal_access+0x30d/0x350 [ocfs2]
-------------------------------------------------------------------------------------------------------------------------------------
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