From: "Cyril B." <cbay-SxHCd5+OuqTrt3ojHgZu+w@public.gmane.org>
To: "linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: bcache oops in bch_insert_data with the latest stables fixes (3.10.15)
Date: Sun, 06 Oct 2013 12:38:53 +0200 [thread overview]
Message-ID: <52513DBD.80005@excellency.fr> (raw)
Hello,
I get the following oops immediately after booting on 3.10.15.
Everything works fine in 3.10.10. Both the backing and cache devices are
on top of mdadm.
Oct 6 12:01:33 stats kernel: [ 19.742952] BUG: unable to handle
kernel NULL pointer dereference at 000000000000006c
Oct 6 12:01:33 stats kernel: [ 19.743132] IP: [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.743255] PGD 101759f067 PUD 0
Oct 6 12:01:33 stats kernel: [ 19.743407] Oops: 0002 [#1] SMP
Oct 6 12:01:33 stats kernel: [ 19.743562] Modules linked in:
nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4
xt_state nf_conntrack xt_mul
tiport bcache sb_edac edac_core ehci_pci ehci_hcd coretemp usbcore
i2c_i801 usb_common ioatdma igb hwmon dca i2c_algo_bit e1000e ptp pps_core
Oct 6 12:01:33 stats kernel: [ 19.744814] CPU: 2 PID: 5702 Comm:
mysqld Not tainted 3.10.15-alwaysdata #1
Oct 6 12:01:33 stats kernel: [ 19.744885] Hardware name: Supermicro
X9SRE/X9SRE-3F/X9SRi/X9SRi-3F/X9SRE/X9SRE-3F/X9SRi/X9SRi-3F, BIOS 2.0a
04/19/2013
Oct 6 12:01:33 stats kernel: [ 19.744976] task: ffff88101b1fe7c0 ti:
ffff8810177aa000 task.ti: ffff8810177aa000
Oct 6 12:01:33 stats kernel: [ 19.745060] RIP:
0010:[<ffffffffa02119d4>] [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.745197] RSP: 0018:ffff8810177ab398
EFLAGS: 00010246
Oct 6 12:01:33 stats kernel: [ 19.745264] RAX: 0000000000000000 RBX:
ffff8810177ab3b8 RCX: 0000000000000000
Oct 6 12:01:33 stats kernel: [ 19.745334] RDX: ffff88101b8bc378 RSI:
0000000000000000 RDI: ffff88101b8bc378
Oct 6 12:01:33 stats kernel: [ 19.745405] RBP: ffff8810177ab398 R08:
ffff88102c584000 R09: 000000000000ffff
Oct 6 12:01:33 stats kernel: [ 19.745475] R10: ffff88102e3bd540 R11:
ffffc90010c02ffc R12: ffff88102e3bd540
Oct 6 12:01:33 stats kernel: [ 19.745545] R13: ffff88101b8bc278 R14:
ffff88101bc20000 R15: ffff88101b8bc2d8
Oct 6 12:01:33 stats kernel: [ 19.745615] FS: 00007f463d72f6f0(0000)
GS:ffff88107fc80000(0000) knlGS:0000000000000000
Oct 6 12:01:33 stats kernel: [ 19.745701] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Oct 6 12:01:33 stats kernel: [ 19.745768] CR2: 000000000000006c CR3:
000000102f10c000 CR4: 00000000000407e0
Oct 6 12:01:33 stats kernel: [ 19.745839] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Oct 6 12:01:33 stats kernel: [ 19.745911] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Oct 6 12:01:33 stats kernel: [ 19.745980] Stack:
Oct 6 12:01:33 stats kernel: [ 19.746042] ffff8810177ab3a8
ffffffffa021b883 ffff8810177ab408 ffffffffa02103be
Oct 6 12:01:33 stats kernel: [ 19.746301] 8000000000000000
000000007284d9f8 8000000000000000 000000007284d9e0
Oct 6 12:01:33 stats kernel: [ 19.746560] ffff8810177ab408
ffff88101b8bc278 ffff88101b1fe7c0 ffff88102e3bd540
Oct 6 12:01:33 stats kernel: [ 19.746819] Call Trace:
Oct 6 12:01:33 stats kernel: [ 19.746888] [<ffffffffa021b883>]
closure_queue+0x43/0x60 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.746959] [<ffffffffa02103be>]
request_write+0x29e/0x3d0 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.747030] [<ffffffffa0210728>]
cached_dev_make_request+0x238/0x3b0 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.747119] [<ffffffff813e3d62>]
generic_make_request+0xd2/0x110
Oct 6 12:01:33 stats kernel: [ 19.747188] [<ffffffff813e3e18>]
submit_bio+0x78/0x130
Oct 6 12:01:33 stats kernel: [ 19.747262] [<ffffffff81165d06>] ?
bio_alloc_bioset+0x136/0x1d0
Oct 6 12:01:33 stats kernel: [ 19.747332] [<ffffffff812a3a5f>]
_xfs_buf_ioapply+0x18f/0x370
Oct 6 12:01:33 stats kernel: [ 19.747402] [<ffffffff812ffd3e>] ?
xlog_bdstrat+0x1e/0x60
Oct 6 12:01:33 stats kernel: [ 19.747470] [<ffffffff812a4c74>]
xfs_buf_iorequest+0x74/0xa0
Oct 6 12:01:33 stats kernel: [ 19.747538] [<ffffffff812ffd3e>]
xlog_bdstrat+0x1e/0x60
Oct 6 12:01:33 stats kernel: [ 19.747606] [<ffffffff81300300>]
xlog_sync+0x2f0/0x470
Oct 6 12:01:33 stats kernel: [ 19.747674] [<ffffffff813005fb>]
xlog_state_release_iclog+0x9b/0xd0
Oct 6 12:01:33 stats kernel: [ 19.747743] [<ffffffff81300bad>]
_xfs_log_force+0x1ed/0x270
Oct 6 12:01:33 stats kernel: [ 19.747811] [<ffffffff81300e04>]
xfs_log_force+0x54/0x80
Oct 6 12:01:33 stats kernel: [ 19.747879] [<ffffffff812a528d>] ?
_xfs_buf_find+0x15d/0x290
Oct 6 12:01:33 stats kernel: [ 19.747948] [<ffffffff812a3db3>]
xfs_buf_lock+0xc3/0xd0
Oct 6 12:01:33 stats kernel: [ 19.748016] [<ffffffff812a528d>]
_xfs_buf_find+0x15d/0x290
Oct 6 12:01:33 stats kernel: [ 19.748084] [<ffffffff812a585f>]
xfs_buf_get_map+0x2f/0x170
Oct 6 12:01:33 stats kernel: [ 19.748161] [<ffffffff81308187>]
xfs_trans_get_buf_map+0xe7/0x140
Oct 6 12:01:33 stats kernel: [ 19.748231] [<ffffffff812db312>]
xfs_da_get_buf+0xb2/0xf0
Oct 6 12:01:33 stats kernel: [ 19.748299] [<ffffffff812e1d20>]
xfs_dir3_data_init+0x50/0x1e0
Oct 6 12:01:33 stats kernel: [ 19.748368] [<ffffffff812bae15>] ?
kmem_free+0x35/0x40
Oct 6 12:01:33 stats kernel: [ 19.748435] [<ffffffff812df83e>]
xfs_dir2_sf_to_block+0xee/0x590
Oct 6 12:01:33 stats kernel: [ 19.748504] [<ffffffff812bad37>] ?
kmem_zone_alloc+0x77/0xe0
Oct 6 12:01:33 stats kernel: [ 19.748573] [<ffffffff812e9d20>]
xfs_dir2_sf_addname+0x430/0x520
Oct 6 12:01:33 stats kernel: [ 19.748643] [<ffffffff812b2430>] ?
xfs_setup_inode+0x210/0x310
Oct 6 12:01:33 stats kernel: [ 19.748713] [<ffffffff812df29c>]
xfs_dir_createname+0x14c/0x1b0
Oct 6 12:01:33 stats kernel: [ 19.748786] [<ffffffff812b9e8e>]
xfs_create+0x4ae/0x5c0
Oct 6 12:01:33 stats kernel: [ 19.748854] [<ffffffff813079c7>] ?
xfs_trans_log_buf+0xb7/0xd0
Oct 6 12:01:33 stats kernel: [ 19.748923] [<ffffffff812b1b1a>]
xfs_vn_mknod+0x8a/0x1a0
Oct 6 12:01:33 stats kernel: [ 19.748991] [<ffffffff812b1c5e>]
xfs_vn_create+0xe/0x10
Oct 6 12:01:33 stats kernel: [ 19.749064] [<ffffffff8113dfa1>]
vfs_create+0xb1/0xe0
Oct 6 12:01:33 stats kernel: [ 19.749131] [<ffffffff8113f440>]
do_last+0xad0/0xdb0
Oct 6 12:01:33 stats kernel: [ 19.749198] [<ffffffff8113bd8d>] ?
inode_permission+0x3d/0x60
Oct 6 12:01:33 stats kernel: [ 19.749267] [<ffffffff8113f7fa>]
path_openat+0xda/0x4b0
Oct 6 12:01:33 stats kernel: [ 19.749339] [<ffffffff81145630>] ?
d_lookup+0x30/0x50
Oct 6 12:01:33 stats kernel: [ 19.749406] [<ffffffff8113fd13>]
do_filp_open+0x43/0xa0
Oct 6 12:01:33 stats kernel: [ 19.749479] [<ffffffff8114c99e>] ?
__alloc_fd+0xde/0x140
Oct 6 12:01:33 stats kernel: [ 19.749549] [<ffffffff8112e210>]
do_sys_open+0x160/0x1f0
Oct 6 12:01:33 stats kernel: [ 19.749617] [<ffffffff8112e2d9>]
SyS_open+0x19/0x20
Oct 6 12:01:33 stats kernel: [ 19.749688] [<ffffffff816a05d2>]
system_call_fastpath+0x16/0x1b
Oct 6 12:01:33 stats kernel: [ 19.749756] Code: bd b8 fe ff ff be 01
00 00 20 e8 e8 9e 00 00 e9 4f fd ff ff 0f 1f 00 48 8d 47 68 55 48 89 47
60 48 89 47 58 48 89 e5 48 8b 47 40 <f0> ff 40 6c e8 53 f4 ff ff c9 c3
90 55 48 89 e5 41 55 4c 8d af
Oct 6 12:01:33 stats kernel: [ 19.752730] RIP [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:33 stats kernel: [ 19.752845] RSP <ffff8810177ab398>
Oct 6 12:01:33 stats kernel: [ 19.752909] CR2: 000000000000006c
Oct 6 12:01:33 stats kernel: [ 19.752981] ---[ end trace
1774b77e3cdc2a57 ]---
Oct 6 12:01:39 stats kernel: [ 25.471716] BUG: unable to handle
kernel NULL pointer dereference at 000000000000006c
Oct 6 12:01:39 stats kernel: [ 25.471896] IP: [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.472017] PGD 101b3e6067 PUD
101b8b1067 PMD 0
Oct 6 12:01:39 stats kernel: [ 25.472215] Oops: 0002 [#2] SMP
Oct 6 12:01:39 stats kernel: [ 25.472368] Modules linked in:
nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4
xt_state nf_conntrack xt_multiport bcache sb_edac edac_core ehci_pci
ehci_hcd coretemp usbcore i2c_i801 usb_common ioatdma igb hwmon dca
i2c_algo_bit e1000e ptp pps_core
Oct 6 12:01:39 stats kernel: [ 25.473619] CPU: 5 PID: 5319 Comm:
php5-fpm Tainted: G D 3.10.15-alwaysdata #1
Oct 6 12:01:39 stats kernel: [ 25.473705] Hardware name: Supermicro
X9SRE/X9SRE-3F/X9SRi/X9SRi-3F/X9SRE/X9SRE-3F/X9SRi/X9SRi-3F, BIOS 2.0a
04/19/2013
Oct 6 12:01:39 stats kernel: [ 25.473796] task: ffff88101b17a080 ti:
ffff88101b1a8000 task.ti: ffff88101b1a8000
Oct 6 12:01:39 stats kernel: [ 25.473880] RIP:
0010:[<ffffffffa02119d4>] [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.474014] RSP: 0018:ffff88101b1a9468
EFLAGS: 00010246
Oct 6 12:01:39 stats kernel: [ 25.474081] RAX: 0000000000000000 RBX:
ffff88101b1a9488 RCX: 0000000000000000
Oct 6 12:01:39 stats kernel: [ 25.474151] RDX: ffff88102ebf1c18 RSI:
0000000000000000 RDI: ffff88102ebf1c18
Oct 6 12:01:39 stats kernel: [ 25.474221] RBP: ffff88101b1a9468 R08:
000000000008bbb0 R09: 000000000000ffff
Oct 6 12:01:39 stats kernel: [ 25.474291] R10: ffff88102e3bd6c0 R11:
ffffc90010c0effc R12: ffff88102e3bd6c0
Oct 6 12:01:39 stats kernel: [ 25.474361] R13: ffff88102ebf1b18 R14:
ffff88101bc20000 R15: ffff88102ebf1b78
Oct 6 12:01:39 stats kernel: [ 25.474431] FS: 00007fa0b7f39700(0000)
GS:ffff88107fd40000(0000) knlGS:0000000000000000
Oct 6 12:01:39 stats kernel: [ 25.474516] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Oct 6 12:01:39 stats kernel: [ 25.474584] CR2: 000000000000006c CR3:
000000101b3e7000 CR4: 00000000000407e0
Oct 6 12:01:39 stats kernel: [ 25.474654] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Oct 6 12:01:39 stats kernel: [ 25.474726] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Oct 6 12:01:39 stats kernel: [ 25.474795] Stack:
Oct 6 12:01:39 stats kernel: [ 25.474857] ffff88101b1a9478
ffffffffa021b883 ffff88101b1a94d8 ffffffffa02103be
Oct 6 12:01:39 stats kernel: [ 25.475116] 8000000000000000
000000007284da30 8000000000000000 000000007284d9f8
Oct 6 12:01:39 stats kernel: [ 25.475376] ffff88101b1a94d8
ffff88102ebf1b18 ffff88101b17a080 ffff88102e3bd6c0
Oct 6 12:01:39 stats kernel: [ 25.475642] Call Trace:
Oct 6 12:01:39 stats kernel: [ 25.475711] [<ffffffffa021b883>]
closure_queue+0x43/0x60 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.475781] [<ffffffffa02103be>]
request_write+0x29e/0x3d0 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.475852] [<ffffffffa0210728>]
cached_dev_make_request+0x238/0x3b0 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.475939] [<ffffffff813e3d62>]
generic_make_request+0xd2/0x110
Oct 6 12:01:39 stats kernel: [ 25.476007] [<ffffffff813e3e18>]
submit_bio+0x78/0x130
Oct 6 12:01:39 stats kernel: [ 25.476078] [<ffffffff81165d06>] ?
bio_alloc_bioset+0x136/0x1d0
Oct 6 12:01:39 stats kernel: [ 25.476149] [<ffffffff812a3a5f>]
_xfs_buf_ioapply+0x18f/0x370
Oct 6 12:01:39 stats kernel: [ 25.476220] [<ffffffff812ffd3e>] ?
xlog_bdstrat+0x1e/0x60
Oct 6 12:01:39 stats kernel: [ 25.476288] [<ffffffff812a4c74>]
xfs_buf_iorequest+0x74/0xa0
Oct 6 12:01:39 stats kernel: [ 25.476356] [<ffffffff812ffd3e>]
xlog_bdstrat+0x1e/0x60
Oct 6 12:01:39 stats kernel: [ 25.476288] [<ffffffff812a4c74>]
xfs_buf_iorequest+0x74/0xa0
Oct 6 12:01:39 stats kernel: [ 25.476356] [<ffffffff812ffd3e>]
xlog_bdstrat+0x1e/0x60
Oct 6 12:01:39 stats kernel: [ 25.476424] [<ffffffff81300300>]
xlog_sync+0x2f0/0x470
Oct 6 12:01:39 stats kernel: [ 25.476491] [<ffffffff813005fb>]
xlog_state_release_iclog+0x9b/0xd0
Oct 6 12:01:39 stats kernel: [ 25.476560] [<ffffffff81300bad>]
_xfs_log_force+0x1ed/0x270
Oct 6 12:01:39 stats kernel: [ 25.476628] [<ffffffff81300e04>]
xfs_log_force+0x54/0x80
Oct 6 12:01:39 stats kernel: [ 25.476696] [<ffffffff812a528d>] ?
_xfs_buf_find+0x15d/0x290
Oct 6 12:01:39 stats kernel: [ 25.476764] [<ffffffff812a3db3>]
xfs_buf_lock+0xc3/0xd0
Oct 6 12:01:39 stats kernel: [ 25.476832] [<ffffffff812a528d>]
_xfs_buf_find+0x15d/0x290
Oct 6 12:01:39 stats kernel: [ 25.476900] [<ffffffff812a585f>]
xfs_buf_get_map+0x2f/0x170
Oct 6 12:01:39 stats kernel: [ 25.476969] [<ffffffff81308187>]
xfs_trans_get_buf_map+0xe7/0x140
Oct 6 12:01:39 stats kernel: [ 25.477045] [<ffffffff812db312>]
xfs_da_get_buf+0xb2/0xf0
Oct 6 12:01:39 stats kernel: [ 25.477113] [<ffffffff812e1d20>]
xfs_dir3_data_init+0x50/0x1e0
Oct 6 12:01:39 stats kernel: [ 25.477182] [<ffffffff812bae15>] ?
kmem_free+0x35/0x40
Oct 6 12:01:39 stats kernel: [ 25.477250] [<ffffffff812df83e>]
xfs_dir2_sf_to_block+0xee/0x590
Oct 6 12:01:39 stats kernel: [ 25.477322] [<ffffffff812d3306>] ?
xfs_bmbt_get_all+0x16/0x20
Oct 6 12:01:39 stats kernel: [ 25.477390] [<ffffffff812d1836>] ?
xfs_bmap_del_extent+0x956/0xba0
Oct 6 12:01:39 stats kernel: [ 25.477460] [<ffffffff812e9d20>]
xfs_dir2_sf_addname+0x430/0x520
Oct 6 12:01:39 stats kernel: [ 25.477528] [<ffffffff812bad37>] ?
kmem_zone_alloc+0x77/0xe0
Oct 6 12:01:39 stats kernel: [ 25.477599] [<ffffffff812df29c>]
xfs_dir_createname+0x14c/0x1b0
Oct 6 12:01:39 stats kernel: [ 25.477672] [<ffffffff812b55dd>]
xfs_rename+0x5bd/0x730
Oct 6 12:01:39 stats kernel: [ 25.478971] [<ffffffff8113bd8d>] ?
inode_permission+0x3d/0x60
Oct 6 12:01:39 stats kernel: [ 25.479041] [<ffffffff8113e46f>] ?
vfs_rename+0xdf/0x480
Oct 6 12:01:39 stats kernel: [ 25.479110] [<ffffffff812b19d5>]
xfs_vn_rename+0x65/0x70
Oct 6 12:01:39 stats kernel: [ 25.479177] [<ffffffff8113e750>]
vfs_rename+0x3c0/0x480
Oct 6 12:01:39 stats kernel: [ 25.479247] [<ffffffff81140490>]
SyS_renameat+0x2f0/0x320
Oct 6 12:01:39 stats kernel: [ 25.479318] [<ffffffff81132374>] ?
fput+0x74/0xe0
Oct 6 12:01:39 stats kernel: [ 25.479385] [<ffffffff8112df08>] ?
filp_close+0x68/0xa0
Oct 6 12:01:39 stats kernel: [ 25.479455] [<ffffffff8113b646>]
SyS_rename+0x16/0x20
Oct 6 12:01:39 stats kernel: [ 25.479526] [<ffffffff816a05d2>]
system_call_fastpath+0x16/0x1b
Oct 6 12:01:39 stats kernel: [ 25.479594] Code: bd b8 fe ff ff be 01
00 00 20 e8 e8 9e 00 00 e9 4f fd ff ff 0f 1f 00 48 8d 47 68 55 48 89 47
60 48 89 47 58 48 89 e5 48 8b 47 40 <f0> ff 40 6c e8 53 f4 ff ff c9 c3
90 55 48 89 e5 41 55 4c 8d af
Oct 6 12:01:39 stats kernel: [ 25.482588] RIP [<ffffffffa02119d4>]
bch_insert_data+0x14/0x20 [bcache]
Oct 6 12:01:39 stats kernel: [ 25.482703] RSP <ffff88101b1a9468>
Oct 6 12:01:39 stats kernel: [ 25.482766] CR2: 000000000000006c
Oct 6 12:01:39 stats kernel: [ 25.482840] ---[ end trace
1774b77e3cdc2a58 ]---
--
Cyril B.
next reply other threads:[~2013-10-06 10:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-06 10:38 Cyril B. [this message]
[not found] ` <52513DBD.80005-SxHCd5+OuqTrt3ojHgZu+w@public.gmane.org>
2013-10-06 15:50 ` bcache oops in bch_insert_data with the latest stables fixes (3.10.15) Gabriel de Perthuis
2013-10-08 22:13 ` Gabriel de Perthuis
[not found] ` <525483A4.5020607-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-08 22:32 ` Kent Overstreet
2013-10-09 21:25 ` Greg KH
2013-10-11 7:07 ` Kent Overstreet
2013-10-11 15:51 ` Greg KH
2013-10-08 22:39 ` matthew patton
[not found] ` <1381271982.70536.YahooMailNeo-XYahOdtEMNnuQS8rMknbopOW+3bF1jUfVpNB7YpNyf8@public.gmane.org>
2013-10-08 22:48 ` Gabriel de Perthuis
[not found] ` <52548BBD.9060601-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-09 7:41 ` Alfredo Sola
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52513DBD.80005@excellency.fr \
--to=cbay-sxhcd5+ouqtrt3ojhgzu+w@public.gmane.org \
--cc=linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox