Hey there,
on the Colibri iMX6DL the root-fs is re-mounted after “a long period of time” (~11 secs), but I don’t know whats going between timestamp [ 1.438409] and [ 13.173064]. Why is there a re-mount to “ro” again? Has someone a hint? We are using Mender on our system for updates.
/etc/fstab:
/dev/root / ext4 ro,noload 0 0
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,ptmxmode=0666,gid=5 0 0
tmpfs /run tmpfs mode=0755,nodev,nosuid,strictatime 0 0
tmpfs /var/volatile tmpfs defaults 0 0
# uncomment this if your device has a SD/MMC/Transflash slot
#/dev/mmcblk0p1 /media/card auto defaults,sync,noauto 0 0
boot.cmd
[...]
env set rootfsargs_set 'env set rootfsargs root=${mender_kernel_root} ro rootwait'
[...]
dmesg output (abridged):
[...]
[ 0.330407] mmc0: SDHCI controller on 2198000.mmc [2198000.mmc] using ADMA
[ 0.337793] NET: Registered PF_PACKET protocol family
[ 0.337831] Key type dns_resolver registered
[ 0.340626] Registering SWP/SWPB emulation handler
[ 0.349007] Loading compiled-in X.509 certificates
[ 0.390644] mmc0: new DDR MMC card at address 0001
[ 0.391787] mmcblk0: mmc0:0001 Q2J54A 3.59 GiB
[ 0.396169] pps pps0: new PPS source ptp0
[ 0.398197] mmcblk0: p1 p2 p3 p4 < p5 p6 >
[ 0.399929] mmcblk0boot0: mmc0:0001 Q2J54A 16.0 MiB
[ 0.401931] mmcblk0boot1: mmc0:0001 Q2J54A 16.0 MiB
[ 0.404567] mmcblk0rpmb: mmc0:0001 Q2J54A 512 KiB, chardev (248:0)
[ 0.421728] fec 2188000.ethernet eth0: registered PHC device 0
[ 0.422441] imx_thermal 20c8000.anatop:tempmon: Industrial CPU temperature grade - max:105C critical:105C passive:95C
[ 0.425207] sdhci-esdhc-imx 2190000.mmc: Got CD GPIO
[ 0.426664] clk: Disabling unused clocks
[ 0.459874] mmc1: SDHCI controller on 2190000.mmc [2190000.mmc] using ADMA
[ 1.438409] EXT4-fs (mmcblk0p3): mounted filesystem 7886976b-c57d-43b2-aa41-04860776fe30 ro without journal. Quota mode: disabled.
[ 1.438491] VFS: Mounted root (ext4 filesystem) readonly on device 179:3.
[ 1.439164] devtmpfs: mounted
[ 1.440362] Freeing unused kernel image (initmem) memory: 1024K
[ 1.440633] Run /sbin/init as init process
[ 1.440641] with arguments:
[ 1.440648] /sbin/init
[ 1.440653] with environment:
[ 1.440658] HOME=/
[ 1.440664] TERM=linux
[ 1.440669] enable_wait_mode=off
[ 1.440674] fec_mac=00:14:2d:a4:12:4f
[ 1.440680] consoleblank=0
[ 1.440684] fbmem=8M
[ 1.785599] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 1.787053] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!
[ 1.944152] EXT4-fs (mmcblk0p5): recovery complete
[ 1.945279] EXT4-fs (mmcblk0p5): mounted filesystem f75abc7b-3ecd-43c8-b7dd-96c4bb6d74aa r/w with journalled data mode. Quota mode: disabled.
[ 1.950232] EXT4-fs (mmcblk0p6): mounted filesystem 1c15fdee-4e52-49b6-bd6c-16608aea381f ro with ordered data mode. Quota mode: disabled.
[ 2.093949] udevd[122]: starting version 3.2.14
[ 2.129547] udevd[123]: starting eudev-3.2.14
[ 2.278259] CAN device driver interface
[ 2.288416] spi_master spi1: will run message pump with realtime priority
[ 2.313605] spi_master spi3: will run message pump with realtime priority
[ 2.449548] imx-sdma 20ec000.dma-controller: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2
[ 2.449598] imx-sdma 20ec000.dma-controller: external firmware not found, using ROM firmware
[ 2.470790] usb_phy_generic usbphynop1: dummy supplies not allowed for exclusive requests
[ 2.473050] usb_phy_generic usbphynop2: dummy supplies not allowed for exclusive requests
[ 2.790178] Micrel KSZ8041 2188000.ethernet-1:00: attached PHY driver
(mii_bus:phy_addr=2188000.ethernet-1:00, irq=POLL)
[...]
[ 3.460711] /dev/mmcblk0p1: Can't open blockdev
[ 3.460816] /dev/mmcblk0p1: Can't open blockdev
[ 3.460891] /dev/mmcblk0p1: Can't open blockdev
[ 4.873242] fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 13.173064] EXT4-fs (mmcblk0p3): re-mounted 7886976b-c57d-43b2-aa41-04860776fe30 ro. Quota mode: disabled.
[...]
Kind regards
Markus
