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Topic: how to use the new block-mount ?

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how do I check if alsa or oss is enabled in the build I downloaded from the above link?
I'm trying to setup  a sound card, but I can't get rid of cracks and pops...

It's working out of the box (using r37568) yippie!

harhar wrote:

It's working out of the box (using r37568) yippie!

It's working in my TP-Link TL-WR1043N/ND v1 too. Thanks Jow and all developers.

working!

DISTRIB_DESCRIPTION="OpenWrt Barrier Breaker r37568" (snapshot built on 28-Jul-2013 03:28 )
on
system type        : Atheros AR9330 rev 1
machine            : TP-LINK TL-MR10U

following modules installed: kmod-usb-storage kmod-fs-ext4 block-mount libmount kmod-usb-ohci

configured not as / but /overlay as described here http://wiki.openwrt.org/doc/howto/extro … aker.trunk

many thanks for fixing

now it is also working on my asus wl500gp v1.
i only have the note that is seems that doing a "sysupgrade -c ...." is saving also the openwrt_release  openwrt_version? the last days after flashing i always had the same Firmware Version in luci so i was always a bit confused smile
Anyhow it is working as "/" on my stick with the last trunk snapshot
thx all

doesn't work for me, tried a couple of times, increased the delay_root to 10 secs, r37568, tp-link wr-720n v3

however i see overlay in tmp:

root@OpenWrt:~# ls /tmp/ -la | grep overlay
drwxr-xr-x    2 root     root            40 Jan  1  1970 overlay
root@OpenWrt:~# cat /etc/config/fstab
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '10'
        option  check_fs        '0'

config 'mount'
        option  target  '/mnt/sda'
        option  uuid    '5071aa7e-2cfe-4e6a-a232-125a2ab4a125'
        option  enabled '0'

config 'mount'
        option  target  '/overlay'
        option  uuid    '6397357e-01ac-4976-8d1b-ddd2c9e0584e'
        option  enabled '1'

config 'swap'
        option  uuid    '72973a2d-032b-4db1-91b8-aaf4429ea724'
        option  enabled '1'
root@OpenWrt:~# block detect
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '5'
        option  check_fs        '0'

config 'mount'
        option  target  '/mnt/sda'
        option  uuid    '5071aa7e-2cfe-4e6a-a232-125a2ab4a125'
        option  enabled '0'

config 'mount'
        option  target  '/mnt/sda1'
        option  uuid    '6397357e-01ac-4976-8d1b-ddd2c9e0584e'
        option  enabled '0'

config 'swap'
        option  uuid    '72973a2d-032b-4db1-91b8-aaf4429ea724'
        option  enabled '0'
root@OpenWrt:~# block info
/dev/mtdblock2: UUID="ccfa28d7-7b0b3e26-61b36307-16c08e58" VERSION="4.0" TYPE="squashfs"
/dev/mtdblock3: TYPE="jffs2"
/dev/sda: UUID="5071aa7e-2cfe-4e6a-a232-125a2ab4a125" VERSION="1.0" TYPE="ext2"
/dev/sda1: UUID="6397357e-01ac-4976-8d1b-ddd2c9e0584e" NAME="EXT_JOURNAL" VERSION="1.0" TYPE="ext3"
/dev/sda2: UUID="72973a2d-032b-4db1-91b8-aaf4429ea724" VERSION="2" TYPE="swap"
root@OpenWrt:~# mount
rootfs on / type rootfs (rw)
/dev/root on /rom type squashfs (ro,relatime)
proc on /proc type proc (rw,noatime)
sysfs on /sys type sysfs (rw,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mtdblock3 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay)
tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)

noticied strange lines in logread output:

Thu Jan  1 00:00:26 1970 daemon.info sysinit: this file has been obseleted. please call "/sbin/block mount" directly
Thu Jan  1 00:00:27 1970 auth.error kernel: [   27.050000] sd 3:0:0:0: [sda] 3911680 512-byte logical blocks: (2.00 GB/1.86 GiB)
Thu Jan  1 00:00:27 1970 auth.error kernel: [   27.060000] sd 3:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Thu Jan  1 00:00:27 1970 auth.info kernel: [   27.100000]  sda: sda1 sda2
Thu Jan  1 00:00:27 1970 daemon.info sysinit: /dev/mtdblock3 is already mounted
Thu Jan  1 00:00:27 1970 auth.info kernel: [   27.470000] Adding 65532k swap on /dev/sda2.  Priority:-1 extents:1 across:65532k

(Last edited by gently on 29 Jul 2013, 19:02)

/dev/sda: UUID="5071aa7e-2cfe-4e6a-a232-125a2ab4a125" VERSION="1.0" TYPE="ext2"

something is wrong with your usb drive / partitions... sda should not be detected as partition!

I have a weird problem on WDR3600 (currently on Bleeding Edge, r37619)

The first time I configure fstab and reboot the router, it works fine:

root@OpenWrt:~# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                  958872     14764    878184   2% /
/dev/root                 1792      1792         0 100% /rom
tmpfs                    63196       352     62844   1% /tmp
/dev/sda1               958872     14764    878184   2% /overlay
overlayfs:/overlay      958872     14764    878184   2% /
tmpfs                      512         0       512   0% /dev

Then I login, reboot WIHTOUT CHANGING ANYTHING, and the extroot does not work anymore. WTF??? PLEASE HELP:

root@OpenWrt:~# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    5184      2828      2356  55% /
/dev/root                 1792      1792         0 100% /rom
tmpfs                    63196       352     62844   1% /tmp
/dev/mtdblock3            5184      2828      2356  55% /overlay
overlayfs:/overlay        5184      2828      2356  55% /
tmpfs                      512         0       512   0% /dev

I tried with another USB key, but it has the same behaviour sad((

My info:

root@OpenWrt:~# block info
/dev/mtdblock2: UUID="4057e985-d5377bc4-ed68f609-bf189eca" VERSION="4.0" TYPE="squashfs"
/dev/mtdblock3: TYPE="jffs2"
/dev/sda1: UUID="cebc1024-1f22-483e-b02c-8b111e79e9e1" NAME="EXT_JOURNAL" VERSION="1.0" TYPE="ext4"

I use OVERLAY:

config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '0'
        option  check_fs        '0'

config 'mount'
        option  target  '/overlay'
        option  uuid    'cebc1024-1f22-483e-b02c-8b111e79e9e1'
        option  enabled '1'
Wed Jul 31 02:10:11 2013 daemon.info sysinit: this file has been obseleted. please call "/sbin/block mount" directly
Wed Jul 31 02:10:11 2013 daemon.info sysinit: /dev/mtdblock3 is already mounted

(Last edited by djrh on 31 Jul 2013, 05:18)

additional info:

root@OpenWrt:~# mount
rootfs on / type rootfs (rw)
/dev/root on /rom type squashfs (ro,relatime)
proc on /proc type proc (rw,noatime)
sysfs on /sys type sysfs (rw,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mtdblock3 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay)
tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)

I think I found something relevant. The only way to make it work after it stops working is to reformat the usb drive by following this:

mkfs.ext4 /dev/sda1  
mount /dev/sda1 /mnt
mkdir /tmp/cproot
mount --bind / /tmp/cproot
tar -C /tmp/cproot -cvf - . | tar -C /mnt -xvf -
sync ; umount /mnt
umount /tmp/cproot


block detect > /etc/config/fstab


vi /etc/config/fstab

After the first reboot, I get this in the log file:

Thu Jan  1 00:00:12 1970 auth.error kernel: [    9.890000] sd 0:0:0:0: [sda] Attached SCSI removable disk
Thu Jan  1 00:00:12 1970 auth.info kernel: [   11.740000] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts:


After the second, I get an extra line:

Thu Jan  1 00:00:12 1970 auth.error kernel: [    9.820000] sd 0:0:0:0: [sda] Attached SCSI removable disk
Thu Jan  1 00:00:12 1970 auth.info kernel: [   11.980000] EXT4-fs (sda1): recovery complete
Thu Jan  1 00:00:12 1970 auth.info kernel: [   11.990000] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts:


I think that there is something that try to "recover" the data on the USB, but it actually messes it up. HELP!

So the problem is that after the first reboot, it mounts /dev/sda to /overlay. But on second reboot, it does something on the USB, so after the reboot it won't work anymore. I am thinking, the USB was the root, so OpenWRT thinks it did not shut down properly, so it runs some scan at startup.

Am I the only one with this problem?

Yes it is a bug that happens if the uuid string is longer than 32 bytes (the internal sprintf buffer to write it to the extroot tag file is only 32 byte large so the uuid is truncated and is detected as being invalid on the next boot).

Fixed with https://dev.openwrt.org/changeset/37623 (http://nbd.name/gitweb.cgi?p=luci2/ubox … 8fe505cbc2)

As a temporary workaround one can do something like:

echo -n "cebc1024-1f22-483e-b02c-8b111e79e9e1" > /etc/.extroot-uuid
kurczaq wrote:

/dev/sda: UUID="5071aa7e-2cfe-4e6a-a232-125a2ab4a125" VERSION="1.0" TYPE="ext2"

something is wrong with your usb drive / partitions... sda should not be detected as partition!

I investigated a bit and it looks really strange, system detects the partion while it is not there, here we go:

root@OpenWrt:~# dmesg | grep sda
[   11.030000] sd 3:0:0:0: [sda] Attached SCSI removable disk
[   17.600000] sd 3:0:0:0: [sda] 3911680 512-byte logical blocks: (2.00 GB/1.86 GiB)
[   17.680000] sd 3:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   18.110000]  sda: unknown partition table
root@OpenWrt:~# fdisk -l /dev/sda

Disk /dev/sda (Sun disk label): 62 heads, 62 sectors, 1017 cylinders
Units = sectors of 1 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
root@OpenWrt:~# fdisk -l

Disk /dev/mtdblock0: 0 MB, 131072 bytes
255 heads, 63 sectors/track, 0 cylinders, total 256 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mtdblock1: 1 MB, 1059840 bytes
255 heads, 63 sectors/track, 0 cylinders, total 2070 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mtdblock2: 2 MB, 2937344 bytes
255 heads, 63 sectors/track, 0 cylinders, total 5737 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mtdblock3: 1 MB, 1114112 bytes
255 heads, 63 sectors/track, 0 cylinders, total 2176 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mtdblock4: 0 MB, 65536 bytes
255 heads, 63 sectors/track, 0 cylinders, total 128 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mtdblock5: 3 MB, 3997696 bytes
255 heads, 63 sectors/track, 0 cylinders, total 7808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda (Sun disk label): 62 heads, 62 sectors, 1017 cylinders
Units = sectors of 1 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
root@OpenWrt:~# cat /proc/partitions
major minor  #blocks  name

  31        0        128 mtdblock0
  31        1       1035 mtdblock1
  31        2       2868 mtdblock2
  31        3       1088 mtdblock3
  31        4         64 mtdblock4
  31        5       3904 mtdblock5
   8        0    1955840 sda
root@OpenWrt:~# block info
/dev/mtdblock2: UUID="4057e985-d5377bc4-ed68f609-bf189eca" VERSION="4.0" TYPE="squashfs"
/dev/mtdblock3: TYPE="jffs2"
/dev/sda: UUID="5071aa7e-2cfe-4e6a-a232-125a2ab4a125" VERSION="1.0" TYPE="ext2"
root@OpenWrt:~# block detect
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '5'
        option  check_fs        '0'

config 'mount'
        option  target  '/mnt/sda'
        option  uuid    '5071aa7e-2cfe-4e6a-a232-125a2ab4a125'
        option  enabled '0'

is it a bug or i'm missing something?

(Last edited by gently on 31 Jul 2013, 16:02)

looks like managed to wipe everything with the following command:
dd if=/dev/zero of=/dev/sda

now there is no orphand partition:

root@OpenWrt:~# block info
/dev/mtdblock2: UUID="4057e985-d5377bc4-ed68f609-bf189eca" VERSION="4.0" TYPE="squashfs"
/dev/mtdblock3: TYPE="jffs2"
root@OpenWrt:~# block detect
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '5'
        option  check_fs        '0'

(Last edited by gently on 31 Jul 2013, 17:22)

configured everything, copied /overlay and it is still mounted to tmp:

root@OpenWrt:~# ls -la /tmp/ | grep overlay
drwxr-xr-x    2 root     root            40 Jan  1  1970 overlay
root@OpenWrt:~# block info
/dev/mtdblock2: UUID="4057e985-d5377bc4-ed68f609-bf189eca" VERSION="4.0" TYPE="squashfs"
/dev/mtdblock3: TYPE="jffs2"
/dev/sda1: VERSION="2" TYPE="swap"
/dev/sda2: UUID="5b108ccb-3dd1-4df9-993b-f262411120bd" NAME="EXT_JOURNAL" VERSION="1.0" TYPE="ext4"
root@OpenWrt:~# block detect
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '5'
        option  check_fs        '0'

config 'swap'
        option  device  '/dev/sda1'
        option  enabled '0'

config 'mount'
        option  target  '/mnt/sda2'
        option  uuid    '5b108ccb-3dd1-4df9-993b-f262411120bd'
        option  enabled '0'
root@OpenWrt:~# cat /etc/config/fstab
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '5'
        option  check_fs        '0'

config 'swap'
        option  device  '/dev/sda1'
        option  enabled '1'

config 'mount'
        option  target  '/overlay'
        option  uuid    '5b108ccb-3dd1-4df9-993b-f262411120bd'
        option  enabled '1'
root@OpenWrt:~# df -h
Filesystem                Size      Used Available Use% Mounted on
rootfs                    1.1M   1004.0K     84.0K  92% /
/dev/root                 1.8M      1.8M         0 100% /rom
tmpfs                    14.1M     72.0K     14.1M   0% /tmp
/dev/mtdblock3            1.1M   1004.0K     84.0K  92% /overlay
overlayfs:/overlay        1.1M   1004.0K     84.0K  92% /
tmpfs                   512.0K         0    512.0K   0% /dev

still in the logread

Thu Jan  1 00:00:35 1970 daemon.info sysinit: this file has been obseleted. please call "/sbin/block mount" directly
Thu Jan  1 00:00:35 1970 daemon.error netifd: wan (965): Sending select for 10.68.85.8...
Thu Jan  1 00:00:35 1970 daemon.error netifd: wan (965): Lease of 10.68.85.8 obtained, lease time 43200
Thu Jan  1 00:00:35 1970 daemon.info sysinit: /dev/mtdblock3 is already mounted

(Last edited by gently on 31 Jul 2013, 16:42)

tried with root / - same results

root@OpenWrt:~# cat /etc/config/fstab
config 'global'
        option  anon_swap       '0'
        option  anon_mount      '0'
        option  auto_swap       '1'
        option  auto_mount      '1'
        option  delay_root      '10'
        option  check_fs        '0'

config 'swap'
        option  device  '/dev/sda1'
        option  enabled '1'

config 'mount'
        option  target  '/'
        option  uuid    '5b108ccb-3dd1-4df9-993b-f262411120bd'
        option  enabled '1'
root@OpenWrt:~# df -h
Filesystem                Size      Used Available Use% Mounted on
rootfs                    1.1M   1004.0K     84.0K  92% /
/dev/root                 1.8M      1.8M         0 100% /rom
tmpfs                    14.1M     76.0K     14.1M   1% /tmp
/dev/mtdblock3            1.1M   1004.0K     84.0K  92% /overlay
overlayfs:/overlay        1.1M   1004.0K     84.0K  92% /
tmpfs                   512.0K         0    512.0K   0% /dev

(Last edited by gently on 31 Jul 2013, 16:50)

jow wrote:

Yes it is a bug that happens if the uuid string is longer than 32 bytes (the internal sprintf buffer to write it to the extroot tag file is only 32 byte large so the uuid is truncated and is detected as being invalid on the next boot).

Fixed with https://dev.openwrt.org/changeset/37623 (http://nbd.name/gitweb.cgi?p=luci2/ubox … 8fe505cbc2)

As a temporary workaround one can do something like:

echo -n "cebc1024-1f22-483e-b02c-8b111e79e9e1" > /etc/.extroot-uuid

Ok,

This work, BUT !!! It only works if you do NOT copy the root files. When I copied the file from the root, it did NOT work.

When I formatted the partition WITHOUT copying the files, it worked fine.


Now, WHY THE HECK I CANNOT INSTALL OPENVPN???

root@OpenWrt:~# opkg install openvpn
Unknown package 'openvpn'.
Collected errors:
 * opkg_install_cmd: Cannot install package openvpn.

There is no openvpn, install either openvpn-openssl or openvpn-nossl.

jow wrote:

There is no openvpn, install either openvpn-openssl or openvpn-nossl.

Thanks, I was following an outdated how-to: http://wiki.openwrt.org/doc/howto/vpn.openvpn

I suppose there is NO Luci  Openvpn add-in anymore?

jow wrote:

Yes it is a bug that happens if the uuid string is longer than 32 bytes (the internal sprintf buffer to write it to the extroot tag file is only 32 byte large so the uuid is truncated and is detected as being invalid on the next boot).

Fixed with https://dev.openwrt.org/changeset/37623 (http://nbd.name/gitweb.cgi?p=luci2/ubox … 8fe505cbc2)

As a temporary workaround one can do something like:

echo -n "cebc1024-1f22-483e-b02c-8b111e79e9e1" > /etc/.extroot-uuid

GRRRRRR, NOT working. It only works if I reboot second time WITHOUT installing anything. The moment I install something and reboot, it can't overlay sad

So I decided to try with  hard drive instead of USB key - same issue. Is it possible that the USB 1.1 and USB 2.0 drivers are in conflict?

[    4.020000] usbcore: registered new interface driver usbfs
[    4.020000] usbcore: registered new interface driver hub
[    4.030000] usbcore: registered new device driver usb
[    4.200000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.210000] ehci-platform: EHCI generic platform driver
[    4.210000] ehci-platform ehci-platform: EHCI Host Controller
[    4.220000] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
[    4.230000] ehci-platform ehci-platform: irq 3, io mem 0x1b000000
[    4.250000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00
[    4.250000] hub 1-0:1.0: USB hub found
[    4.260000] hub 1-0:1.0: 1 port detected
[    4.310000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    4.670000] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    4.820000] hub 1-1:1.0: USB hub found
[    4.820000] hub 1-1:1.0: 4 ports detected
[    5.110000] usb 1-1.2: new high-speed USB device number 3 using ehci-platform
[    6.470000] eth0: link up (1000Mbps/Full duplex)
[    7.960000] jffs2: notice: (365) jffs2_build_xattr_subsystem: complete building xattr subsystem, 1 of xdatum (1 unchecked, 0 orphan) and 14 of xref (0 dead, 0 orphan) found.
[    8.080000] SCSI subsystem initialized
[    8.500000] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[    8.510000] scsi0 : usb-storage 1-1.2:1.0
[    8.520000] usbcore: registered new interface driver usb-storage
[    9.520000] scsi 0:0:0:0: Direct-Access     Initio   WD600VE-75HDT1   1.06 PQ: 0 ANSI: 0
[    9.530000] sd 0:0:0:0: [sda] 117210240 512-byte logical blocks: (60.0 GB/55.8 GiB)
[    9.540000] sd 0:0:0:0: [sda] Write Protect is off
[    9.540000] sd 0:0:0:0: [sda] Mode Sense: 23 00 00 00
[    9.540000] sd 0:0:0:0: [sda] No Caching mode page present
[    9.550000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    9.560000] sd 0:0:0:0: [sda] No Caching mode page present
[    9.560000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    9.620000]  sda: sda1
[    9.620000] sd 0:0:0:0: [sda] No Caching mode page present
[    9.630000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    9.640000] sd 0:0:0:0: [sda] Attached SCSI disk
[   13.810000] EXT4-fs (sda1): recovery complete
[   13.820000] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: 

Mine is like that, pivot overlay working

[    3.300000] sd 0:0:0:0: [sda] 2054144 512-byte logical blocks: (1.05 GB/1003 MiB)
[    3.310000] sd 0:0:0:0: [sda] Write Protect is off
[    3.310000] sd 0:0:0:0: [sda] Mode Sense: 0b 00 00 08
[    3.310000] sd 0:0:0:0: [sda] No Caching mode page present
[    3.320000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    3.330000] sd 0:0:0:0: [sda] No Caching mode page present
[    3.330000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    3.340000]  sda: sda1 sda2 sda3
[    3.340000] sd 0:0:0:0: [sda] No Caching mode page present
[    3.350000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    3.350000] sd 0:0:0:0: [sda] Attached SCSI removable disk
[    6.170000] eth0: link up (100Mbps/Full duplex)
[    7.250000] jffs2: notice: (347) jffs2_build_xattr_subsystem: complete building xattr subsystem, 20 of xdatum (0 unchecked, 20 orphan) and 30 of xref (0 dead, 30 orphan) found.
[    7.280000] EXT4-fs (sda1): warning: mounting unchecked fs, running e2fsck is recommended
[    7.290000] EXT4-fs (sda1): mounted filesystem without journal. Opts:

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