Hi Nerves-users! 
Started playing with the eco-system, simple examples are working such as blinky, hello_erlang.
However more advanced ones such as hello_live_view keep going into a reboot-loop, output from minicom:
[ 3.333699] EXT4-fs (mmcblk0p3): VFS: Can't find ext4 filesystem
[ 3.336497] erlinit: Cannot mount /dev/mmcblk0p3 at /root: Invalid argument
How can we fix this?
One approach would formatting the third partition as ext4 from linux - to make sure it does not have to be done on the raspberry-pi?
As this is a model B - I am assuming everything runs a bit slower.
Any tips are appreciated,
Kind regards,
Fabian
I formatted the 3-partition from linux, so it passes that point. Now however I am getting an out of memory. Maybe I need to reconfigure ( raspiconfig ) the amount of memory I was reserving for the camera?
PS: Is there anyway to this from nerves - or config?
Output from minicom:
erlinit: The hostname is 'nerves-000000008b98465c'.
[ 3.642161] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00, bcdDevice= 2.00
[ 3.642216] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.646951] smsc95xx v2.0.0
[ 3.942864] SMSC LAN8700 usb-001:003:01: attached PHY driver (mii_bus:phy_addr=usb-001:003:01, irq=160)
[ 3.949485] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:98:46:5c
[ 75.501653] erts_dcpus_1 invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
[ 75.501727] CPU: 0 PID: 71 Comm: erts_dcpus_1 Not tainted 6.6.51-rt44 #1
[ 75.501750] Hardware name: BCM2835
[ 75.501773] unwind_backtrace from show_stack+0x10/0x14
[ 75.501846] show_stack from dump_stack_lvl+0x24/0x3c
[ 75.501911] dump_stack_lvl from dump_header+0x48/0x1c8
[ 75.501951] dump_header from oom_kill_process+0x230/0x250
[ 75.501988] oom_kill_process from out_of_memory+0xe8/0x340
[ 75.502016] out_of_memory from __alloc_pages+0x7dc/0xb90
[ 75.502066] __alloc_pages from handle_mm_fault+0x648/0xe4c
[ 75.502118] handle_mm_fault from do_page_fault+0x14c/0x290
[ 75.502152] do_page_fault from do_DataAbort+0x38/0xb0
[ 75.502180] do_DataAbort from __dabt_usr+0x50/0x60
[ 75.502206] Exception stack(0xc4b55fb0 to 0xc4b55ff8)
[ 75.502229] 5fa0: 000002ff b3cb4210 00000000 b287f018
[ 75.502252] 5fc0: b3cb4211 b2920ea4 007c34c0 00000000 b2921000 0138bfc8 b274803c 00000000
[ 75.502272] 5fe0: b2920ea8 b4241aa0 0156c1f8 0062058c 60000010 ffffffff
[ 75.502285] Mem-Info:
[ 75.502296] active_anon:2 inactive_anon:11378 isolated_anon:0
[ 75.502296] active_file:12 inactive_file:23 isolated_file:0
[ 75.502296] unevictable:0 dirty:0 writeback:0
[ 75.502296] slab_reclaimable:253 slab_unreclaimable:1126
[ 75.502296] mapped:0 shmem:1 pagetables:65
[ 75.502296] sec_pagetables:0 bounce:0
[ 75.502296] kernel_misc_reclaimable:0
[ 75.502296] free:255 free_pcp:12 free_cma:0
[ 75.502340] Node 0 active_anon:8kB inactive_anon:45512kB active_file:48kB inactive_file:92kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0ks
[ 75.502380] Normal free:1020kB boost:4096kB min:5040kB low:5276kB high:5512kB reserved_highatomic:0KB active_anon:8kB inactive_anon:45512kB active_file:48kB inactive_file:92kB unevB
[ 75.502429] lowmem_reserve[]: 0 0
[ 75.502453] Normal: 35*4kB (UM) 22*8kB (UM) 10*16kB (U) 11*32kB (U) 1*64kB (U) 1*128kB (U) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1020kB
[ 75.502570] 36 total pagecache pages
[ 75.502577] 0 pages in swap cache
[ 75.502584] Free swap = 0kB
[ 75.502591] Total swap = 0kB
[ 75.502598] 16384 pages RAM
[ 75.502605] 0 pages HighMem/MovableOnly
[ 75.502611] 2389 pages reserved
[ 75.502618] 2048 pages cma reserved
[ 75.502625] Tasks state (memory values in pages):
[ 75.502632] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
[ 75.502666] [ 54] 0 54 466 18 8192 0 0 nbtty
[ 75.502695] [ 62] 0 62 1547 90 12288 0 0 rngd
[ 75.502718] [ 64] 0 64 466 18 8192 0 0 nbtty
[ 75.502742] [ 65] 0 65 23504 11203 81920 0 0 beam.smp
[ 75.502766] [ 69] 0 69 499 19 8192 0 0 erl_child_setup
[ 75.502790] [ 84] 0 84 467 18 6144 0 0 heart
[ 75.502812] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),global_oom,task_memcg=/,task=beam.smp,pid=65,uid=0
[ 75.503009] Out of memory: Killed process 65 (beam.smp) total-vm:94016kB, anon-rss:44812kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:0
[ 75.503870] erts_dcpus_1: page allocation failure: order:0, mode:0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), nodemask=(null)
[ 75.503931] CPU: 0 PID: 71 Comm: erts_dcpus_1 Not tainted 6.6.51-rt44 #1
[ 75.503953] Hardware name: BCM2835
[ 75.503969] unwind_backtrace from show_stack+0x10/0x14
[ 75.504025] show_stack from dump_stack_lvl+0x24/0x3c
[ 75.504087] dump_stack_lvl from warn_alloc+0xd4/0x16c
[ 75.504142] warn_alloc from __alloc_pages+0x814/0xb90
[ 75.504182] __alloc_pages from handle_mm_fault+0x648/0xe4c
[ 75.504230] handle_mm_fault from do_page_fault+0x14c/0x290
[ 75.504266] do_page_fault from do_DataAbort+0x38/0xb0
[ 75.504294] do_DataAbort from __dabt_usr+0x50/0x60
[ 75.504319] Exception stack(0xc4b55fb0 to 0xc4b55ff8)
[ 75.504341] 5fa0: 000002ff b3cb4210 00000000 b287f018
[ 75.504363] 5fc0: b3cb4211 b2920ea4 007c34c0 00000000 b2921000 0138bfc8 b274803c 00000000
[ 75.504384] 5fe0: b2920ea8 b4241aa0 0156c1f8 0062058c 60000010 ffffffff
[ 75.504397] Mem-Info:
[ 75.504403] active_anon:2 inactive_anon:11378 isolated_anon:0
[ 75.504403] active_file:12 inactive_file:23 isolated_file:0
[ 75.504403] unevictable:0 dirty:0 writeback:0
[ 75.504403] slab_reclaimable:253 slab_unreclaimable:1126
[ 75.504403] mapped:0 shmem:1 pagetables:65
[ 75.504403] sec_pagetables:0 bounce:0
[ 75.504403] kernel_misc_reclaimable:0
[ 75.504403] free:255 free_pcp:12 free_cma:0
[ 75.504449] Node 0 active_anon:8kB inactive_anon:45512kB active_file:48kB inactive_file:92kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0ks
[ 75.504487] Normal free:1020kB boost:4096kB min:5040kB low:5276kB high:5512kB reserved_highatomic:0KB active_anon:8kB inactive_anon:45512kB active_file:48kB inactive_file:92kB unevB
[ 75.504532] lowmem_reserve[]: 0 0
[ 75.504554] Normal: 35*4kB (UM) 22*8kB (UM) 10*16kB (U) 11*32kB (U) 1*64kB (U) 1*128kB (U) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1020kB
[ 75.504667] 36 total pagecache pages
[ 75.504675] 0 pages in swap cache
[ 75.504682] Free swap = 0kB
[ 75.504689] Total swap = 0kB
[ 75.504695] 16384 pages RAM
[ 75.504703] 0 pages HighMem/MovableOnly
[ 75.504709] 2389 pages reserved
[ 75.504716] 2048 pages cma reserved
[ 75.507302] SQUASHFS error: Failed to read block 0x12db8a6: -12
[ 76.521499] heart: Erlang has closed.
Sorry for the verbose output! 
Quick update on this.
I had GPU-MEM at 192 which seems to be the default for old model B.
Following the guide here ( Advanced Configuration — Nerves v1.5.4 ) i altered the GPU_MEM to 64 which now gives enough memory for the system to boot and run smoothly.
Hope this helps people in the future - who are faced with similar issues.
Kind regards,
Fabian
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