Hi,
The UBIFS crashed after a power cut in our board. Is there any recommendation to void such problems? We had a lot of headaches with Linux Image 2.7 version.
U-Boot 2016.11-00015-gf4db39e-dirty (Sep 12 2018 - 19:10:06 -0300)
CPU: Freescale i.MX7S rev1.2 at 792MHz
CPU: Extended Commercial temperature grade (-20C to 105C) at 34C
Reset cause: POR
DRAM: 256 MiB
Enabling LCD pin on GPIO 2
PMIC: RN5T567 LSIVER=0x01 OTPVER=0x0d
NAND: 512 MiB
MMC: FSL_SDHC: 0
Video: 640x480x18
In: serial
Out: serial
Err: serial
Model: Toradex Colibri iMX7 Solo 256MB V1.1B, Serial# 02952312
Net: FEC0
Hit any key to stop autoboot: 0
Booting from NAND...
ubi0: default fastmap pool size: 200
ubi0: default fastmap WL pool size: 100
ubi0: attaching mtd1
ubi0: attached by fastmap
ubi0: fastmap pool size: 200
ubi0: fastmap WL pool size: 100
ubi0: attached mtd1 (name "mtd=4", size 508 MiB)
ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
ubi0: good PEBs: 4060, bad PEBs: 4, corrupted PEBs: 0
ubi0: user volume: 5, internal volumes: 1, max. volumes count: 128
ubi0: max/mean erase counter: 31/5, WL threshold: 4096, image sequence number: 0
ubi0: available PEBs: 0, total reserved PEBs: 4060, PEBs reserved for bad PEB handling: 76
No size specified -> Using max size (5588008)
Read 5588008 bytes from volume kernel to 81000000
No size specified -> Using max size (41150)
Read 41150 bytes from volume dtb to 82000000
Kernel image @ 0x81000000 [ 0x000000 - 0x554428 ]
## Flattened Device Tree blob at 82000000
Booting using the fdt blob at 0x82000000
Using Device Tree in place at 82000000, end 8200d0bd
Updating MTD partitions...
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.9.87-dirty (joao@joao-Inspiron-7520) (gcc version 5.2.1 20151005 (Linaro GCC 5.2-2015.11-2) ) #1 SMP PREEMPT Tue Oct 16 13:34:14 -03 2018
[ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt:Machine model: Toradex Colibri iMX7S on Colibri Evaluation Board V3
[ 0.000000] cma: Reserved 128 MiB at 0x88000000
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] percpu: Embedded 14 pages/cpu @87d8e000 s26624 r8192 d22528 u57344
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
[ 0.000000] Kernel command line: ubi.mtd=ubi root=ubi0:rootfs rootfstype=ubifs ubi.fm_autoconvert=1 threadirqs console=tty1 console=ttymxc0,115200n8 consoleblank=0 video=dcufb:pixclockpol:0,vsync:0,hs0
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Memory: 116340K/262144K available (7168K kernel code, 304K rwdata, 2260K rodata, 1024K init, 401K bss, 14732K reserved, 131072K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0x90800000 - 0xff800000 (1776 MB)
[ 0.000000] lowmem : 0x80000000 - 0x90000000 ( 256 MB)
[ 0.000000] modules : 0x7f000000 - 0x80000000 ( 16 MB)
[ 0.000000] .text : 0x80008000 - 0x80800000 (8160 kB)
[ 0.000000] .init : 0x80b00000 - 0x80c00000 (1024 kB)
[ 0.000000] .data : 0x80c00000 - 0x80c4c360 ( 305 kB)
[ 0.000000] .bss : 0x80c4e000 - 0x80cb2658 ( 402 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 32.
[ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] arm_arch_timer: Architected cp15 timer(s) running at 8.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns
[ 0.000007] sched_clock: 56 bits at 8MHz, resolution 125ns, wraps every 2199023255500ns
[ 0.000020] Switching to timer-based delay loop, resolution 125ns
[ 0.000354] Ignoring duplicate/late registration of read_current_timer delay
[ 0.000375] clocksource: mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns
[ 0.001853] Console: colour dummy device 80x30
[ 0.002606] console [tty1] enabled
[ 0.002639] Calibrating delay loop (skipped), value calculated using timer frequency.. 16.00 BogoMIPS (lpj=8000)
[ 0.002690] pid_max: default: 32768 minimum: 301
[ 0.002824] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.002858] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.003619] CPU: Testing write buffer coherency: ok
[ 0.003988] Setting up static identity map for 0x80100000 - 0x80100058
[ 0.016093] Brought up 1 CPUs
[ 0.016129] SMP: Total of 1 processors activated (16.00 BogoMIPS).
[ 0.016158] CPU: All CPU(s) started in SVC mode.
[ 0.016790] devtmpfs: initialized
[ 0.030554] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.030932] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 0.030993] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.036162] pinctrl core: initialized pinctrl subsystem
[ 0.037651] NET: Registered protocol family 16
[ 0.044805] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.048839] cpuidle: using governor menu
[ 0.062126] DDR type is DDR3!
[ 0.070370] imx7d_enet_clk_sel: fec1: failed to get enet_out clock, assuming ext. clock source
[ 0.070454] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.070498] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.070884] imx7d-pinctrl 302c0000.iomuxc-lpsr: initialized IMX pinctrl driver
[ 0.072652] imx7d-pinctrl 30330000.iomuxc: initialized IMX pinctrl driver
[ 0.073601] imx-gpcv2 30000000.aips-bus:pgc: mipi regulator not ready.
[ 0.074509] MU is ready for cross core communication!
[ 0.105134] mxs-dma 33000000.dma-apbh: initialized
[ 0.106865] VCC_USB[1-4]: supplied by 5V
[ 0.107634] SCSI subsystem initialized
[ 0.107959] usbcore: registered new interface driver usbfs
[ 0.108127] usbcore: registered new interface driver hub
[ 0.108248] usbcore: registered new device driver usb
[ 0.108500] 30800000.aips-bus:usbphynop1 supply vcc not found, using dummy regulator
[ 0.108668] 30800000.aips-bus:usbphynop3 supply vcc not found, using dummy regulator
[ 0.110078] i2c i2c-0: IMX I2C adapter registered
[ 0.110173] i2c i2c-0: can't use DMA, using PIO instead.
[ 0.110416] Linux video capture interface: v2.00
[ 0.110491] pps_core: LinuxPPS API ver. 1 registered
[ 0.110520] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.110581] PTP clock support registered
[ 0.111118] imx rpmsg driver is registered.
[ 0.111366] Advanced Linux Sound Architecture Driver Initialized.
[ 0.113521] clocksource: Switched to clocksource arch_sys_counter
[ 0.113685] VFS: Disk quotas dquot_6.6.0
[ 0.113784] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.126122] NET: Registered protocol family 2
[ 0.126868] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.126937] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.127003] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.127077] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.127132] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.127309] NET: Registered protocol family 1
[ 0.129797] RPC: Registered named UNIX socket transport module.
[ 0.129835] RPC: Registered udp transport module.
[ 0.129861] RPC: Registered tcp transport module.
[ 0.129887] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.131933] Bus freq driver module loaded
[ 0.134572] workingset: timestamp_bits=30 max_order=16 bucket_order=0
[ 0.145082] NFS: Registering the id_resolver key type
[ 0.145142] Key type id_resolver registered
[ 0.145170] Key type id_legacy registered
[ 0.145206] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.148005] ntfs: driver 2.1.32 [Flags: R/W].
[ 0.148450] fuse init (API version 7.26)
[ 0.157128] io scheduler noop registered
[ 0.157167] io scheduler deadline registered
[ 0.157404] io scheduler cfq registered (default)
[ 0.161384] 30730000.lcdif supply lcd not found, using dummy regulator
[ 0.229928] mxsfb 30730000.lcdif: failed to find mxc display driver
[ 0.241938] Console: switching to colour frame buffer device 128x37
[ 0.256617] mxsfb 30730000.lcdif: initialized
[ 0.258383] imx-sdma 30bd0000.sdma: no iram assigned, using external mem
[ 0.262001] imx-sdma 30bd0000.sdma: loaded firmware 4.2
[ 0.269961] 30860000.serial: ttymxc0 at MMIO 0x30860000 (irq = 52, base_baud = 1500000) is a IMX
[ 0.961253] console [ttymxc0] enabled
[ 0.968304] 30890000.serial: ttymxc1 at MMIO 0x30890000 (irq = 53, base_baud = 1500000) is a IMX
[ 0.980463] 30880000.serial: ttymxc2 at MMIO 0x30880000 (irq = 54, base_baud = 1500000) is a IMX
[ 1.008255] loop: module loaded
[ 1.019823] vdd1p0d: supplied by DCDC3
[ 1.046449] random: fast init done
[ 1.054807] nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xdc
[ 1.063548] nand: Macronix MX30LF4G28AB
[ 1.069713] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 112
[ 1.081781] gpmi-nand 33002000.gpmi-nand: enable the asynchronous EDO mode 5
[ 1.091479] Bad block table found at page 262080, version 0x01
[ 1.100052] Bad block table found at page 262016, version 0x01
[ 1.108856] 5 ofpart partitions found on MTD device gpmi-nand
[ 1.117085] Creating 5 MTD partitions on "gpmi-nand":
[ 1.124605] 0x000000000000-0x000000080000 : "mx7-bcb"
[ 1.132664] 0x000000080000-0x000000200000 : "u-boot1"
[ 1.140598] 0x000000200000-0x000000380000 : "u-boot2"
[ 1.148475] 0x000000380000-0x000000400000 : "u-boot-env"
[ 1.156604] 0x000000400000-0x000020000000 : "ubi"
[ 1.172754] gpmi-nand 33002000.gpmi-nand: driver registered.
[ 1.182011] spi_imx 30840000.ecspi: dma setup error -19, use pio
[ 1.191157] spi_imx 30840000.ecspi: probed
[ 1.198076] libphy: Fixed MDIO Bus: probed
[ 1.207045] pps pps0: new PPS source ptp0
[ 1.222014] libphy: fec_enet_mii_bus: probed
[ 1.229700] fec 30be0000.ethernet eth0: registered PHC device 0
[ 1.238070] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.246892] ehci-mxc: Freescale On-Chip EHCI Host driver
[ 1.254733] usbcore: registered new interface driver usb-storage
[ 1.263154] usbcore: registered new interface driver usbserial
[ 1.271275] usbcore: registered new interface driver usbserial_generic
[ 1.280005] usbserial: USB Serial support registered for generic
[ 1.288186] usbcore: registered new interface driver ftdi_sio
[ 1.296033] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 1.305572] usbcore: registered new interface driver pl2303
[ 1.313284] usbserial: USB Serial support registered for pl2303
[ 1.322599] 30b10200.usbmisc supply vbus-wakeup not found, using dummy regulator
[ 1.332372] 30b30200.usbmisc supply vbus-wakeup not found, using dummy regulator
[ 1.343481] mousedev: PS/2 mouse device common for all mice
[ 1.354750] input: AD7879 Touchscreen as /devices/soc0/soc/30800000.aips-bus/30a20000.i2c/i2c-0/0-002c/input/input0
[ 1.368927] snvs_rtc 30370000.snvs:snvs-rtc-lp: rtc core: registered 30370000.snvs:snvs- as rtc1
[ 1.380156] i2c /dev entries driver
[ 1.388802] imx2-wdt 30280000.wdog: timeout 60 sec (nowayout=0)
[ 1.398801] sdhci: Secure Digital Host Controller Interface driver
[ 1.407361] sdhci: Copyright(c) Pierre Ossman
[ 1.414040] sdhci-pltfm: SDHCI platform and OF driver helper
[ 1.423030] sdhci-esdhc-imx 30b40000.usdhc: Got CD GPIO
[ 1.465751] mmc0: SDHCI controller on 30b40000.usdhc [30b40000.usdhc] using ADMA
[ 1.482277] caam 30900000.caam: ERA source: CCBVID.
[ 1.491332] caam 30900000.caam: Entropy delay = 3200
[ 1.500053] caam 30900000.caam: Instantiated RNG4 SH0
[ 1.559468] caam 30900000.caam: Instantiated RNG4 SH1
[ 1.566949] caam 30900000.caam: device ID = 0x0a16030000000000 (Era 8)
[ 1.575953] caam 30900000.caam: job rings = 3, qi = 0
[ 1.606671] caam algorithms registered in /proc/crypto
[ 1.630404] caam_jr 30901000.jr0: registering rng-caam
[ 1.641466] caam 30900000.caam: caam pkc algorithms registered in /proc/crypto
[ 1.652102] hidraw: raw HID events driver (C) Jiri Kosina
[ 1.660294] usbcore: registered new interface driver usbhid
[ 1.668406] usbhid: USB HID core driver
[ 1.683669] coresight-etm3x 3007c000.etm: ETM 3.5 initialized
[ 1.700182] sgtl5000 0-000a: sgtl5000 revision 0x11
[ 1.766078] Netfilter messages via NETLINK v0.30.
[ 1.773481] nfnl_acct: registering with nfnetlink.
[ 1.781021] nf_conntrack version 0.5.0 (4096 buckets, 16384 max)
[ 1.789893] nf_tables: (c) 2007-2009 Patrick McHardy <kaber@trash.net>
[ 1.801373] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.813013] NET: Registered protocol family 10
[ 1.822225] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 1.831285] NET: Registered protocol family 17
[ 1.838334] Bridge firewalling registered
[ 1.846923] 8021q: 802.1Q VLAN Support v1.8
[ 1.855567] Key type dns_resolver registered
[ 1.874788] Registering SWP/SWPB emulation handler
[ 1.884697] registered taskstats version 1
[ 1.938924] ci_hdrc ci_hdrc.0: EHCI Host Controller
[ 1.946115] ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
[ 1.962578] ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
[ 1.971421] hub 1-0:1.0: USB hub found
[ 1.977445] hub 1-0:1.0: 1 port detected
[ 1.985720] imx_thermal 30000000.aips-bus:tempmon: Extended Commercial CPU temperature grade - max:105C critical:100C passive:95C
[ 2.022677] asoc-simple-card sound: sgtl5000 <-> 308a0000.sai mapping ok
[ 2.033405] ubi0: default fastmap pool size: 200
[ 2.040570] ubi0: default fastmap WL pool size: 100
[ 2.047909] ubi0: attaching mtd4
[ 2.267743] ubi0: attached by fastmap
[ 2.273867] ubi0: fastmap pool size: 200
[ 2.280155] ubi0: fastmap WL pool size: 100
[ 2.298507] ubi0: attached mtd4 (name "ubi", size 508 MiB)
[ 2.306389] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 2.315615] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 2.324779] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 2.334093] ubi0: good PEBs: 4060, bad PEBs: 4, corrupted PEBs: 0
[ 2.342605] ubi0: user volume: 5, internal volumes: 1, max. volumes count: 128
[ 2.352239] ubi0: max/mean erase counter: 31/5, WL threshold: 4096, image sequence number: 0
[ 2.363141] ubi0: available PEBs: 0, total reserved PEBs: 4060, PEBs reserved for bad PEB handling: 76
[ 2.374966] ubi0: background thread "ubi_bgt0d" started, PID 181
[ 2.384474] input: gpio-keys as /devices/soc0/gpio-keys/input/input1
[ 2.384999] hctosys: unable to open rtc device (rtc0)
[ 2.428714] ALSA device list:
[ 2.435240] #0: imx7-sgtl5000
[ 2.480222] UBIFS (ubi0:4): recovery needed
[ 2.830664] random: crng init done
[ 3.246219] UBIFS error (ubi0:4 pid 1): ubifs_get_pnode.part.4: error -22 reading pnode at 8:19711
[ 3.257891] (pid 1) dumping pnode:
[ 3.263907] address 86599c80 parent 86599c00 cnext 0
[ 3.271596] flags 0 iip 1 level 0 num 0
[ 3.278141] 0: free 0 dirty 126576 flags 1 lnum 0
[ 3.285548] 1: free 0 dirty 126464 flags 1 lnum 0
[ 3.292903] 2: free 0 dirty 130976 flags 34 lnum 0
[ 3.300408] 3: free 248 dirty 126480 flags 1 lnum 0
[ 3.307850] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.87-dirty #1
[ 3.316657] Hardware name: Freescale i.MX7 Dual (Device Tree)
[ 3.324765] [<8010e904>] (unwind_backtrace) from [<8010b5f4>] (show_stack+0x10/0x14)
[ 3.334905] [<8010b5f4>] (show_stack) from [<804100b0>] (dump_stack+0x78/0x8c)
[ 3.344570] [<804100b0>] (dump_stack) from [<80380848>] (ubifs_get_pnode.part.4+0x23c/0x2ac)
[ 3.355505] [<80380848>] (ubifs_get_pnode.part.4) from [<803821e8>] (ubifs_lpt_lookup_dirty+0x264/0x2ac)
[ 3.367584] [<803821e8>] (ubifs_lpt_lookup_dirty) from [<8038556c>] (ubifs_update_one_lp+0x34/0x140)
[ 3.379349] [<8038556c>] (ubifs_update_one_lp) from [<80374270>] (ubifs_tnc_remove_range+0xd4/0x258)
[ 3.391179] [<80374270>] (ubifs_tnc_remove_range) from [<803746d4>] (ubifs_tnc_remove_ino+0x12c/0x134)
[ 3.403230] [<803746d4>] (ubifs_tnc_remove_ino) from [<80376e74>] (ubifs_replay_journal+0xe74/0x12a0)
[ 3.415201] [<80376e74>] (ubifs_replay_journal) from [<8036cb78>] (ubifs_mount+0x11c0/0x15e8)
[ 3.426463] [<8036cb78>] (ubifs_mount) from [<80204e78>] (mount_fs+0x14/0xa4)
[ 3.436325] [<80204e78>] (mount_fs) from [<8021f788>] (vfs_kern_mount+0x4c/0xf4)
[ 3.446453] [<8021f788>] (vfs_kern_mount) from [<80222590>] (do_mount+0x154/0xb88)
[ 3.456753] [<80222590>] (do_mount) from [<80223364>] (SyS_mount+0x90/0xc0)
[ 3.466413] [<80223364>] (SyS_mount) from [<80b011b0>] (mount_block_root+0x138/0x2a0)
[ 3.476928] [<80b011b0>] (mount_block_root) from [<80b014e0>] (prepare_namespace+0x9c/0x194)
[ 3.488046] [<80b014e0>] (prepare_namespace) from [<80b00e48>] (kernel_init_freeable+0x1d4/0x1e4)
[ 3.499628] [<80b00e48>] (kernel_init_freeable) from [<807a3308>] (kernel_init+0x8/0x108)
[ 3.510531] [<807a3308>] (kernel_init) from [<801078d0>] (ret_from_fork+0x14/0x24)
[ 3.520944] UBIFS error (ubi0:4 pid 1): ubifs_get_pnode.part.4: calc num: 425
[ 3.530923] UBIFS error (ubi0:4 pid 1): ubifs_update_one_lp: cannot update properties of LEB 1713, error -22
[ 3.543680] znode 8659aa00, LEB 1862:115280 len 188 parent 8659a900 iip 0 level 0 child_cnt 8 flags 1
[ 3.555867] zbranches:
[ 3.561084] 0: LNC (null) LEB 1835:118736 len 1030 key (17899, data, 1203)
[ 3.571130] 1: LNC (null) LEB 1835:119768 len 983 key (17899, data, 1204)
[ 3.581074] 2: LNC (null) LEB 1835:120752 len 1018 key (17899, data, 1205)
[ 3.591101] 3: LNC (null) LEB 1835:121776 len 1077 key (17899, data, 1206)
[ 3.601100] 4: LNC (null) LEB 1835:122856 len 1048 key (17899, data, 1207)
[ 3.611097] 5: LNC (null) LEB 1835:123904 len 1025 key (17899, data, 1208)
[ 3.621085] 6: LNC (null) LEB 1835:124936 len 1036 key (17899, data, 1209)
[ 3.631054] 7: LNC (null) LEB 1713:0 len 1009 key (17899, data, 1210)
[ 3.648919] List of all partitions:
[ 3.655369] No filesystem could mount root, tried: [ 3.660244] ubifs
[ 3.665039]
[ 3.669247] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 3.680325] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Best regards