iSCSI problem after firmware upgrade

[fourwed]

I have a QNAP TS-809U-RP connects to Windows 2003 using iSCSI initiator 2.08. It was fine for years until recently I updated the firmware. I forget which version did I have and flash it with the latest 3.6.1 Build0302. After the upgrade, the windows 2003 could not connect to it at all. Therefore, I deleted all the settings in the iSCSI initiator 2.08 and reconnected it. The reconnection seems fine but the drive did not re-appear. I went to the disk management and a windows pop up and asked me to make it a basic disk. I had no idea what was happening at that time and I click yes to make it a basic disk and then make it a GPT disk. After that, I realized that I have just turned my iSCSI target to a non-located empty disk.

Did I do something wrong by deleting the settings in the iSCSI initiator? How can I recover the data?

[metiu_l]

Hello I have the same problem, after updating the firmware.

I can no longer access the partition.

If I access the configuration page no longer shows me nothing.

[si2424]

Thanks for the post, I was just about to do that update but can't afford to loose my iscsi data. Has anyone contacted support? What is the responce?

[gavinwa]

We've found with our 2 TS-809 QNAPs that after the firmware update to 3.6.1 Build 0302T iSCSI is very unreliable.

The symptom of the problem is that iSCSI logon appears to fail "authentication error" or "target error". Trying again sometimes reconnects, sometimes doesn't. It's very random.

If I look in /etc/logs/kmsg it appears as though the root cause of the problem is that the kernel is kernel panicking. Rebooting the Qnap fixes this until a few weeks later when the kernel panics again and iSCSI again becomes unreliable.

This wasn't an issue until we upgraded the firmware so there is a bug in 3.6.1 Build 0302T.

[gavinwa]

This is what appears in /etc/logs/kmsg on my affected TS-809U machines when iSCSI dies. If I see this in the logs it's game over and the only fix is to reboot the NAS.

Code: Select all

<4>[3844697.683448] iscsi_np: page allocation failure. order:4, mode:0xd0
<4>[3844697.683511] Pid: 4780, comm: iscsi_np Tainted: P           2.6.33.2 #1
<4>[3844697.683573] Call Trace:
<4>[3844697.683638]  [<ffffffff81087a2d>] __alloc_pages_nodemask+0x518/0x560
<4>[3844697.683701]  [<ffffffff810aa4c4>] ____cache_alloc+0x26b/0x4e8
<4>[3844697.683764]  [<ffffffff810aa784>] __kmalloc+0x43/0x71
<4>[3844697.683836]  [<ffffffffa025f74a>] kzalloc+0xf/0x11 [target_core_mod]
<4>[3844697.683904]  [<ffffffffa025f767>] core_create_device_list_for_node+0x1b/0x88 [target_core_mod]
<4>[3844697.684032]  [<ffffffffa026045f>] core_tpg_check_initiator_node_acl+0x152/0x229 [target_core_mod]
<4>[3844697.684164]  [<ffffffffa02ae39a>] iscsi_target_init_negotiation+0x69e/0x7a0 [iscsi_target_mod]
<4>[3844697.684285]  [<ffffffffa02ac6be>] iscsi_target_login_thread+0xf2e/0x1bda [iscsi_target_mod]
<4>[3844697.684405]  [<ffffffff81080000>] ? __perf_event_overflow+0x3d/0x1b4
<4>[3844697.684469]  [<ffffffff81003754>] kernel_thread_helper+0x4/0x10
<4>[3844697.684536]  [<ffffffffa02ab790>] ? iscsi_target_login_thread+0x0/0x1bda [iscsi_target_mod]
<4>[3844697.684654]  [<ffffffff81003750>] ? kernel_thread_helper+0x0/0x10
<6>[3844697.684716] Mem-Info:
<4>[3844697.684773] DMA per-cpu:
<4>[3844697.684831] CPU    0: hi:    0, btch:   1 usd:   0
<4>[3844697.684890] CPU    1: hi:    0, btch:   1 usd:   0
<4>[3844697.684950] DMA32 per-cpu:
<4>[3844697.685009] CPU    0: hi:  186, btch:  31 usd:   0
<4>[3844697.685069] CPU    1: hi:  186, btch:  31 usd:   0
<4>[3844697.685138] active_anon:2919 inactive_anon:1315 isolated_anon:0
<4>[3844697.685139]  active_file:198213 inactive_file:200779 isolated_file:0
<4>[3844697.685140]  unevictable:563 dirty:10 writeback:0 unstable:0
<4>[3844697.685141]  free:7947 slab_reclaimable:16132 slab_unreclaimable:9414
<4>[3844697.685142]  mapped:1199 shmem:51 pagetables:343 bounce:0
<4>[3844697.685447] DMA free:8104kB min:120kB low:148kB high:180kB active_anon:0kB inactive_anon:0kB active_file:316kB inactive_file:7464kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15292kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:16kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
<4>[3844697.685865] lowmem_reserve[]: 0 1996 1996 1996
<4>[3844697.685947] DMA32 free:24056kB min:16260kB low:20324kB high:24388kB active_anon:11676kB inactive_anon:5260kB active_file:792024kB inactive_file:795052kB unevictable:2252kB isolated(anon):0kB isolated(file):176kB present:2044048kB mlocked:2252kB dirty:40kB writeback:0kB mapped:4796kB shmem:204kB slab_reclaimable:64512kB slab_unreclaimable:37656kB kernel_stack:1544kB pagetables:1372kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
<4>[3844697.686515] lowmem_reserve[]: 0 0 0 0
<4>[3844697.686575] DMA: 2*4kB 2*8kB 3*16kB 3*32kB 2*64kB 3*128kB 3*256kB 1*512kB 2*1024kB 2*2048kB 0*4096kB = 8104kB
<4>[3844697.686699] DMA32: 961*4kB 2116*8kB 7*16kB 5*32kB 11*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 24180kB
<4>[3844697.686823] 399111 total pagecache pages
<4>[3844697.686880] 24 pages in swap cache
<4>[3844697.686936] Swap cache stats: add 31, delete 7, find 22/22
<4>[3844697.686995] Free swap  = 529936kB
<4>[3844697.687055] Total swap = 530040kB
<6>[3844697.695562] 522176 pages RAM
<6>[3844697.695623] 10192 pages reserved
<6>[3844697.695681] 278793 pages shared
<6>[3844697.695738] 230077 pages non-shared
<3>[3844697.695797] Unable to allocate memory for se_node_acl_t->device_list