Force plug to boot in read-only mode

[ubermacin]

Hello, I'm at a bit of my wits end and I think it's probably something really simple or a easy misunderstanding on my part. I've set up a plug with airshair (free airplay). I've had a power outage take out a usb drive (had to fsck it). I'd like to avoid this by booting in read-only. I know airshare still works because when the usb had errors, it still booted and worked in read-only mode that was forced by the OS. Here is my issue, I'm trying to follow this guide:

https://gist.github.com/yeokm1/8b0ffc03e622ce011010

That obviously doesn't apply to my pogo e02+arch, but i was hoping for it to be similar enough. I know I can (and tried) to load my uEnv.txt (and confirmed it's loading) with:

$this->bbcode_second_pass_code('', 'mainargs=setenv bootargs console=${console} ${mtdparts} root=${root} ro rootwait ${optargs}')

I also don't see an entry in the fstab, is it located somewhere else?

[moonman]

No fstab needed for this. So you've changed mainargs, what was the result? Run dmesg and see if 'ro' was indeed passed to kernel.

[ubermacin]

I did use that uEnv.txt and it seemed to load at the beginning:
$this->bbcode_second_pass_code('', 'Hit any key to stop autoboot: 0
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found

Partition Map for USB device 0 -- Partition Type: DOS

Part Start Sector Num Sectors UUID Type
1 63 31262427 00000000-01 83
loading envs from usb 0 ...
92 bytes read in 123 ms (0 Bytes/s)
importing envs ...
## Info: input data size = 93 = 0x5D
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found
4118016 bytes read in 274 ms (14.3 MiB/s)
** File not found /boot/uInitrd **
## Booting kernel from Legacy Image at 00800000 ...
Image Name: Linux-4.1.0-1-ARCH
Created: 2015-06-23 6:14:19 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4117952 Bytes = 3.9 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
Loading Kernel Image ... OK

Starting kernel ...
')


here is the output from dmesg:
$this->bbcode_second_pass_code('', '[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] NR_IRQS:114
[ 0.000013] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 10737418237ns
[ 0.965163] clocksource orion_clocksource: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302233 ns
[ 0.965349] Console: colour dummy device 80x30
[ 0.965377] Calibrating delay loop... 1191.11 BogoMIPS (lpj=5955584)
[ 1.055249] pid_max: default: 32768 minimum: 301
[ 1.055341] Security Framework initialized
[ 1.055428] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 1.055448] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 1.056140] Initializing cgroup subsys blkio
[ 1.056169] Initializing cgroup subsys memory
[ 1.056231] Initializing cgroup subsys devices
[ 1.056257] Initializing cgroup subsys freezer
[ 1.056277] Initializing cgroup subsys net_cls
[ 1.056295] Initializing cgroup subsys bfqio
[ 1.056313] Initializing cgroup subsys perf_event
[ 1.056333] Initializing cgroup subsys net_prio
[ 1.056419] CPU: Testing write buffer coherency: ok
[ 1.056859] Setting up static identity map for 0x81e0 - 0x8238
[ 1.058740] devtmpfs: initialized
[ 1.061114] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 1.061661] pinctrl core: initialized pinctrl subsystem
[ 1.062408] NET: Registered protocol family 16
[ 1.062881] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 1.085251] cpuidle: using governor ladder
[ 1.115251] cpuidle: using governor menu
[ 1.115406] Kirkwood: MV88F6281-A0, TCLK=200000000.
[ 1.115432] Feroceon L2: Enabling L2
[ 1.115470] Feroceon L2: Cache support initialised.
[ 1.116216] initial MPP regs: 01111111 11113322 00001111 00100000 00000000 00000000 00000000
[ 1.116245] final MPP regs: 01111111 11113322 00001111 00000000 00000000 00000000 00000000
[ 1.146732] vgaarb: loaded
[ 1.147045] SCSI subsystem initialized
[ 1.147222] libata version 3.00 loaded.
[ 1.147553] usbcore: registered new interface driver usbfs
[ 1.147628] usbcore: registered new interface driver hub
[ 1.147694] usbcore: registered new device driver usb
[ 1.147857] pps_core: LinuxPPS API ver. 1 registered
[ 1.147866] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 1.147900] PTP clock support registered
[ 1.148949] Switched to clocksource orion_clocksource
[ 1.178635] FS-Cache: Loaded
[ 1.191583] NET: Registered protocol family 2
[ 1.192481] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 1.192519] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[ 1.192550] TCP: Hash tables configured (established 2048 bind 2048)
[ 1.192620] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 1.192643] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.192833] NET: Registered protocol family 1
[ 1.192887] PCI: CLS 0 bytes, default 32
[ 1.194760] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 1.207421] VFS: Disk quotas dquot_6.6.0
[ 1.207678] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.209588] jffs2: version 2.2. (NAND) \xffffffc2\xffffffa9 2001-2006 Red Hat, Inc.
[ 1.210641] fuse init (API version 7.23)
[ 1.212898] aufs 4.x-rcN-20150622
[ 1.215239] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[ 1.215262] io scheduler noop registered
[ 1.215275] io scheduler deadline registered
[ 1.215553] io scheduler cfq registered
[ 1.216052] io scheduler bfq registered (default)
[ 1.216060] BFQ I/O-scheduler: v7r8
[ 1.216260] mv_xor mv_xor.0: Marvell shared XOR driver
[ 1.249039] mv_xor mv_xor.0: Marvell XOR: ( xor cpy )
[ 1.289029] mv_xor mv_xor.0: Marvell XOR: ( xor cpy )
[ 1.289217] mv_xor mv_xor.1: Marvell shared XOR driver
[ 1.329024] mv_xor mv_xor.1: Marvell XOR: ( xor cpy )
[ 1.369024] mv_xor mv_xor.1: Marvell XOR: ( xor cpy )
[ 1.374443] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 1.375521] console [ttyS0] disabled
[ 1.395626] serial8250.0: ttyS0 at MMIO 0xf1012000 (irq = 33, base_baud = 12500000) is a 16550A
[ 1.915701] console [ttyS0] enabled
[ 1.932605] brd: module loaded
[ 1.941904] loop: module loaded
[ 1.946149] nand: Could not find valid ONFI parameter page; aborting
[ 1.952656] nand: device found, Manufacturer ID: 0xad, Chip ID: 0xf1
[ 1.959073] nand: Hynix NAND 128MiB 3,3V 8-bit
[ 1.963542] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 1.971172] Scanning device for bad blocks
[ 2.052806] 4 cmdlinepart partitions found on MTD device orion_nand
[ 2.059120] Creating 4 MTD partitions on "orion_nand":
[ 2.064288] 0x000000000000-0x000000100000 : "u-boot"
[ 2.069769] 0x000000100000-0x000000500000 : "uImage"
[ 2.075188] 0x000000500000-0x000002500000 : "rootfs"
[ 2.080666] 0x000002500000-0x000008000000 : "data"
[ 2.092980] libphy: orion_mdio_bus: probed
[ 2.097206] mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
[ 3.180019] mv643xx_eth_port mv643xx_eth_port.0 eth0: port 0 with MAC address 00:25:31:02:d6:25
[ 3.188986] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 3.195550] ehci-pci: EHCI PCI platform driver
[ 3.200091] ehci-orion: EHCI orion driver
[ 3.204192] orion-ehci orion-ehci.0: EHCI Host Controller
[ 3.209659] orion-ehci orion-ehci.0: new USB bus registered, assigned bus number 1
[ 3.217409] orion-ehci orion-ehci.0: irq 19, io mem 0xf1050000
[ 3.238981] orion-ehci orion-ehci.0: USB 2.0 started, EHCI 1.00
[ 3.245854] hub 1-0:1.0: USB hub found
[ 3.249701] hub 1-0:1.0: 1 port detected
[ 3.254226] usbcore: registered new interface driver uas
[ 3.259740] usbcore: registered new interface driver usb-storage
[ 3.265828] usbcore: registered new interface driver ums-alauda
[ 3.271872] usbcore: registered new interface driver ums-cypress
[ 3.277956] usbcore: registered new interface driver ums-datafab
[ 3.284065] usbcore: registered new interface driver ums_eneub6250
[ 3.290348] usbcore: registered new interface driver ums-freecom
[ 3.296433] usbcore: registered new interface driver ums-isd200
[ 3.302447] usbcore: registered new interface driver ums-jumpshot
[ 3.308614] usbcore: registered new interface driver ums-karma
[ 3.314542] usbcore: registered new interface driver ums-onetouch
[ 3.320754] usbcore: registered new interface driver ums-realtek
[ 3.326840] usbcore: registered new interface driver ums-sddr09
[ 3.332864] usbcore: registered new interface driver ums-sddr55
[ 3.338857] usbcore: registered new interface driver ums-usbat
[ 3.345170] mousedev: PS/2 mouse device common for all mice
[ 3.569006] usb 1-1: new high-speed USB device number 2 using orion-ehci
[ 3.721518] hub 1-1:1.0: USB hub found
[ 3.725671] hub 1-1:1.0: 4 ports detected
[ 4.009297] usb 1-1.3: new high-speed USB device number 3 using orion-ehci
[ 4.120820] usb-storage 1-1.3:1.0: USB Mass Storage device detected
[ 4.127430] scsi host0: usb-storage 1-1.3:1.0
[ 4.358976] rtc-mv rtc-mv: internal RTC not ticking
[ 4.364018] i2c /dev entries driver
[ 4.368126] sdhci: Secure Digital Host Controller Interface driver
[ 4.374359] sdhci: Copyright(c) Pierre Ossman
[ 4.378802] sdhci-pltfm: SDHCI platform and OF driver helper
[ 4.385037] ledtrig-cpu: registered to indicate activity on CPUs
[ 4.391251] usbcore: registered new interface driver r8712u
[ 4.397062] gre: GRE over IPv4 demultiplexor driver
[ 4.402043] NET: Registered protocol family 17
[ 4.406581] Key type dns_resolver registered
[ 4.411901] registered taskstats version 1
[ 4.418053] Key type encrypted registered
[ 4.422745] console [netcon0] enabled
[ 4.426425] netconsole: network logging started
[ 4.431126] hctosys: unable to open rtc device (rtc0)
[ 4.437247] Waiting 10 sec before mounting root device...
[ 5.129773] scsi 0:0:0:0: Direct-Access SanDisk Cruzer Glide 1.27 PQ: 0 ANSI: 6
[ 5.139407] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 5.144809] sd 0:0:0:0: [sda] 31266816 512-byte logical blocks: (16.0 GB/14.9 GiB)
[ 5.154198] sd 0:0:0:0: [sda] Write Protect is off
[ 5.159074] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[ 5.159824] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 5.172637] sda: sda1
[ 5.177822] sd 0:0:0:0: [sda] Attached SCSI disk
[ 14.449968] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem
[ 14.470362] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 14.478115] VFS: Mounted root (ext2 filesystem) on device 8:1.
[ 14.487509] devtmpfs: mounted
[ 14.491449] Freeing unused kernel memory: 264K (c076a000 - c07ac000)
[ 14.882918] NET: Registered protocol family 10
[ 14.888548] systemd[1]: Inserted module 'ipv6'
[ 14.909973] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 14.915403] systemd[1]: Inserted module 'ip_tables'
[ 14.937190] random: systemd urandom read with 46 bits of entropy available
[ 14.960971] systemd[1]: systemd 221 running in system mode. (+PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD +IDN)
[ 14.979451] systemd[1]: Detected architecture arm.
[ 15.010369] systemd[1]: Set hostname to <alarm>.
[ 15.876324] systemd[1]: display-manager.service: Cannot add dependency job, ignoring: Unit display-manager.service failed to load: No such file or directory.
[ 15.919146] systemd[1]: Created slice Root Slice.
[ 15.924050] systemd[1]: Starting Root Slice.
[ 15.949120] systemd[1]: Listening on Journal Socket (/dev/log).
[ 15.955202] systemd[1]: Starting Journal Socket (/dev/log).
[ 15.979121] systemd[1]: Created slice System Slice.
[ 15.984231] systemd[1]: Starting System Slice.
[ 16.009120] systemd[1]: Created slice system-getty.slice.
[ 16.014677] systemd[1]: Starting system-getty.slice.
[ 16.039121] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ 16.045546] systemd[1]: Starting system-serial\x2dgetty.slice.
[ 16.069102] systemd[1]: Reached target Swap.
[ 16.073515] systemd[1]: Starting Swap.
[ 16.099097] systemd[1]: Reached target Encrypted Volumes.
[ 16.104638] systemd[1]: Starting Encrypted Volumes.
[ 16.129108] systemd[1]: Listening on Device-mapper event daemon FIFOs.
[ 16.135796] systemd[1]: Starting Device-mapper event daemon FIFOs.
[ 16.142457] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ 16.150589] systemd[1]: Starting Dispatch Password Requests to Console Directory Watch.
[ 16.179116] systemd[1]: Listening on LVM2 metadata daemon socket.
[ 16.185364] systemd[1]: Starting LVM2 metadata daemon socket.
[ 16.209101] systemd[1]: Reached target System Time Synchronized.
[ 16.215258] systemd[1]: Starting System Time Synchronized.
[ 16.239121] systemd[1]: Listening on networkd rtnetlink socket.
[ 16.245207] systemd[1]: Starting networkd rtnetlink socket.
[ 16.269115] systemd[1]: Listening on udev Control Socket.
[ 16.274690] systemd[1]: Starting udev Control Socket.
[ 16.299109] systemd[1]: Listening on udev Kernel Socket.
[ 16.304571] systemd[1]: Starting udev Kernel Socket.
[ 16.334847] systemd[1]: Listening on Journal Audit Socket.
[ 16.359170] systemd[1]: Listening on Journal Socket.
[ 16.364397] systemd[1]: Starting Journal Socket.
[ 16.369659] systemd[1]: Mounted Huge Pages File System.
[ 16.378849] systemd[1]: Starting Setup Virtual Console...
[ 16.415689] systemd[1]: Started Load Kernel Modules.
[ 16.428014] systemd[1]: Starting Apply Kernel Variables...
[ 16.465504] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[ 16.509789] systemd[1]: Mounted Configuration File System.
[ 16.536776] systemd[1]: Starting Journal Service...
[ 16.564912] systemd[1]: Starting Remount Root and Kernel File Systems...
[ 16.603044] systemd[1]: Mounting POSIX Message Queue File System...
[ 16.643117] systemd[1]: Mounting FUSE Control File System...
[ 16.702250] systemd[1]: Mounting Temporary Directory...
[ 16.720836] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 16.736577] systemd[1]: Starting Forward Password Requests to Wall Directory Watch.
[ 16.760376] systemd-journald[90]: File /var/log/journal/f332ada870174aa5876f33aaca9b322c/system.journal corrupted or uncleanly shut down, renaming and replacing.
[ 16.775196] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ 16.782578] systemd[1]: Starting /dev/initctl Compatibility Named Pipe.
[ 16.795911] systemd[1]: Mounting Debug File System...
[ 16.849132] systemd[1]: Created slice User and Session Slice.
[ 16.855097] systemd[1]: Starting User and Session Slice.
[ 16.879109] systemd[1]: Reached target Remote File Systems.
[ 16.884834] systemd[1]: Starting Remote File Systems.
[ 16.909133] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[ 16.918739] systemd[1]: Starting Arbitrary Executable File Formats File System Automount Point.
[ 17.394486] systemd[1]: Started Set Up Additional Binary Formats.
[ 17.419254] systemd[1]: Reached target Paths.
[ 17.423817] systemd[1]: Starting Paths.
[ 17.433005] systemd[1]: Reached target Slices.
[ 17.449086] systemd[1]: Starting Slices.
[ 17.489148] systemd[1]: Mounted POSIX Message Queue File System.
[ 17.509179] systemd[1]: Mounted Debug File System.
[ 17.529134] systemd[1]: Mounted FUSE Control File System.
[ 17.559143] systemd[1]: Mounted Temporary Directory.
[ 17.579201] systemd[1]: Started Setup Virtual Console.
[ 17.609211] systemd[1]: Started Apply Kernel Variables.
[ 17.629399] systemd[1]: Started Create list of required static device nodes for the current kernel.
[ 17.669176] systemd[1]: Started Remount Root and Kernel File Systems.
[ 17.869222] systemd[1]: Started Journal Service.
[ 19.349227] random: nonblocking pool is initialized
[ 19.546008] systemd-journald[90]: Received request to flush runtime journal from PID 1
[ 29.325379] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 31.685397] mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled
[ 31.697052] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 37.641448] systemd-journald[90]: Failed to create new system journal: No such file or directory')

[ubermacin]

Hmmm, still no dice, seems to always mount in RW