got fixed with an updated release
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
** Changed in: ubuntu-z-systems
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1607325
Title:
Ubuntu 16.04 running on z13 hardware is unable to configure blue ridge
Status in Ubuntu on IBM z Systems:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
Problem Description
===========================
system Z Ubuntu 16.04 LTS can not correctly configured DS8870 2107 LUNs.
---uname output---
Linux ilabg3 4.4.0-33-generic #52-Ubuntu SMP Fri Jul 22 19:17:00 UTC 2016
s390x s390x s390x GNU/Linux
---Additional Hardware Info---
Z13 system using 16G FCP adapters to attach to FC fabric and IBM Blue ridge
Machine Type = Z13 S390
Steps to Reproduce
============================
The initial kernel is 4.4.0-24-generic and all blue ridge devices can be
configured normally.
After we upgrade kernel to 4.4.0-33 and reload BR code all BR devices can not
be detect.
System log show:
[ 2645.893763] scsi 0:0:7:0: RAID IBM 2810XIV-LUN-0 0000
PQ: 0 ANSI: 5
[ 2645.895269] sysfs: cannot create duplicate filename
'/bus/scsi/devices/0:0:7:0'
[ 2645.895310] ------------[ cut here ]------------
[ 2645.895311] WARNING: at /build/linux-o03cxz/linux-4.4.0/fs/sysfs/dir.c:31
[ 2645.895312] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd
grace fscache qeth_l3 qeth ccwgroup vmur ib_iser rdma_cm iw_cm ib_cm ib_sa
ib_mad ib_core sunrpc ib_addr iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi btrfs zlib_deflate raid10 raid456 async_memcpy
async_raid6_recov async_pq async_xor async_tx xor raid6_pq libcrc32c raid1
raid0 linear dm_round_robin ghash_s390 prng aes_s390 des_s390 des_generic
sha512_s390 sha256_s390 sha1_s390 sha_common zfcp dasd_eckd_mod qdio
scsi_transport_fc dasd_fba_mod dasd_mod scsi_dh_emc scsi_dh_rdac scsi_dh_alua
dm_multipath
[ 2645.895338] CPU: 1 PID: 4008 Comm: sh Tainted: G W
4.4.0-33-generic #52-Ubuntu
[ 2645.895339] task: 00000000dfe436b0 ti: 000000007b97c000 task.ti:
000000007b97c000
[ 2645.895340] Krnl PSW : 0704d00180000000 00000000003a361c
(sysfs_warn_dup+0x7c/0x98)
[ 2645.895350] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0
EA:3
Krnl GPRS: 0000000000cf7039 0000000000cd9f3c 0000000000000043
00000000ef4d18a0
[ 2645.895351] 00000000003a3618 0000000000000000 000000007a49a000
00000000707b9178
[ 2645.895352] 0000000000c1d0e0 00000000ee71a780 0000000000000001
00000000ee71a780
[ 2645.895353] 00000000e9554b60 000000007ebdf000 00000000003a3618
000000007b97f9b8
[ 2645.895361] Krnl Code: 00000000003a360c: c020002f33e7 larl
%r2,989dda
00000000003a3612: c0e5fff6befb brasl
%r14,27b408
#00000000003a3618: a7f40001 brc
15,3a361a
>00000000003a361c: b904002d lgr %r2,%r13
00000000003a3620: ebbff0a00004 lmg
%r11,%r15,160(%r15)
00000000003a3626: c0f4fffa5995 brcl
15,2ee950
00000000003a362c: a7390000 lghi %r3,0
00000000003a3630: a7f4ffec brc
15,3a3608
[ 2645.895370] Call Trace:
[ 2645.895372] ([<00000000003a3618>] sysfs_warn_dup+0x78/0x98)
[ 2645.895374] [<00000000003a3b30>] sysfs_do_create_link_sd.isra.0+0xf8/0x108
[ 2645.895378] [<00000000005c4044>] bus_add_device+0x13c/0x230
[ 2645.895379] [<00000000005c1758>] device_add+0x398/0x680
[ 2645.895385] [<00000000005f7a34>] scsi_sysfs_add_sdev+0xcc/0x2a8
[ 2645.895386] [<00000000005f4210>] scsi_probe_and_add_lun+0xcc0/0xe18
[ 2645.895387] [<00000000005f4c5a>] __scsi_scan_target+0xba/0x268
[ 2645.895389] [<00000000005f4f0a>] scsi_scan_target+0x102/0x120
[ 2645.895401] [<000003ff801095f6>] zfcp_unit_scsi_scan+0x7e/0x90 [zfcp]
[ 2645.895404] [<000003ff80109948>] zfcp_unit_add+0x168/0x1f0 [zfcp]
[ 2645.895407] [<000003ff80108564>] zfcp_sysfs_unit_add_store+0x54/0x70
[zfcp]
[ 2645.895408] [<00000000003a1d9a>] kernfs_fop_write+0x13a/0x190
[ 2645.895413] [<000000000030fcac>] vfs_write+0x94/0x1a0
[ 2645.895414] [<00000000003109be>] SyS_write+0x66/0xd8
[ 2645.895417] [<00000000007b86c6>] system_call+0xd6/0x264
[ 2645.895418] [<000003ffb10df6e8>] 0x3ffb10df6e8
[ 2645.895419] Last Breaking-Event-Address:
[ 2645.895420] [<00000000003a3618>] sysfs_warn_dup+0x78/0x98
[ 2645.895421] ---[ end trace a9b757385c995a64 ]---
[ 2645.895535] scsi 0:0:7:0: failed to add device: -17
== Comment: #1 - XIANG ZHANG <zx...@cn.ibm.com> - 2016-07-26 02:34:39 ==
I know the Bug 139096, not sure the same symptom
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