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| 13:41.46 | kirabo | I'm using busybox and compiled e2fsprogs to have the fsck tools. After i mount the mmc for 30 times i get the message to check my file system. Then i'd like e2fsck to be launched automatically. How do i do that ? |
| 13:47.09 | SpeedEvil | ext2? |
| 13:47.32 | SpeedEvil | If fsck is asked to check a clean filesystem, it will just do nothing. |
| 13:47.46 | SpeedEvil | It's only if it's either corrupt, or has reached its maximal mount count that it will check it |
| 13:52.47 | kirabo | Filesystem is ext3. If i understand, i can launch fsck at each boot and it will do its work only if necessary ? |
| 13:53.21 | SpeedEvil | yes. |
| 13:55.27 | kirabo | thank you |
| 14:04.36 | kirabo | I don't understand the behavior of the fsck command because in my init.sh script i do the fsck on the mmc before to mount it and i get the error message 'Can't check if filesystem is mounted due to missing mtab file while determining whether /dev/mmcblk0p1 is mounted' but thereafter the check is performed. And if if put the fsck commant after mount i get a warning that i could cause severe damages to the filesystem. |
| 14:06.13 | SpeedEvil | mtab contains a list of mounted filesystems |
| 14:06.56 | SpeedEvil | You possibly want the -M Do not check mounted filesystems and return an exit code of 0 |
| 14:06.56 | SpeedEvil | <PROTECTED> |
| 14:06.57 | SpeedEvil | <PROTECTED> |
| 14:07.27 | SpeedEvil | you do know it's not safe to check / RO, then remount it rw? |
| 14:08.08 | kirabo | No i didn't but i doubt that is it was mounted read only, nothing could be repaired if needed |
| 14:09.10 | kirabo | my mtab file is a symboic link to /proc/mtab, maybe that's not the good way to perform as /proc is declared in the fstab |
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| 14:10.30 | SpeedEvil | Read only just means the filesystem layer. |
| 14:10.44 | SpeedEvil | You can still change the underlying block device with fsck. |
| 14:11.26 | SpeedEvil | However - this causes the kernel to not know about the state of the filesystem - it can be confused - and you should never remount a mounted RO - and fsck'd (where fsck did something ) filesystem rw |
| 14:11.27 | kirabo | Ok, that i didn't knew |
| 14:11.53 | SpeedEvil | The exit code returned by e2fsck is the sum of the following condi- |
| 14:11.53 | SpeedEvil | <PROTECTED> |
| 14:12.02 | SpeedEvil | <PROTECTED> |
| 14:12.03 | SpeedEvil | <PROTECTED> |
| 14:12.04 | SpeedEvil | e2fsck |
| 14:12.11 | SpeedEvil | return codes. |
| 14:12.32 | kirabo | But my mmc is mounted rw so there's no issue for me about it |
| 14:12.58 | SpeedEvil | You mount it rw at boot? |
| 14:14.01 | kirabo | yes |
| 14:14.21 | SpeedEvil | That means you can't easily check it. |
| 14:14.59 | SpeedEvil | That's why most distributions mount it RO - check it - then either mount it RW, or reboot, if fsck says it had needed repair. |
| 14:15.25 | SpeedEvil | Or you have an RO initfs that boots, checks the filesystem, then mounts it and piviot_root's over the root |
| 14:15.32 | SpeedEvil | Anyway - afk for a bit - good luck. |
| 14:15.38 | kirabo | Ok i didn't unsertsood it that way |
| 14:15.39 | kirabo | thanks |
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| 20:25.37 | gnr | hi! What would be the available methods of storing linux system configs so that we can create system profiles in which user can choose to load at startup |
| 20:26.51 | gnr | i've thought of storing in xml file |
| 20:27.12 | roxfan | please don't |
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| 20:27.56 | gnr | roxfan: no to xml? |
| 20:28.03 | roxfan | no xml |
| 20:28.12 | gnr | how about flat files? |
| 20:28.24 | roxfan | u-boot usually has nvram implementation, you could probably use something based on it |
| 20:28.40 | roxfan | kernel command lines are commonly stored there |
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| 20:28.56 | roxfan | you could just have a bunch of them and offer the user to choose one |
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| 20:33.06 | gnr | i'm looking at storing linux configs such as ip address, vlan config, kerberos config, dhcp config into a single manageable file actually |
| 20:34.52 | gnr | an the single file will be loaded during startup, and the single file can be a form as backup as well. |
| 20:36.23 | gnr | have thought of saving all info as flat unix file and uuencode it instead of xml. But is there any other methods? |
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| 20:44.58 | phlyback | so anyone here still using dht-walnuts |
| 20:49.40 | phlyback | I need to know if the inability to use newer version of u-boot and kernels 2.6.25 and up is only due to the patch to boot from ide |
| 20:50.11 | phlyback | if so, how hard would it be just to boot from i2c, spi or sd/mmc from the gpio pins |
| 20:50.30 | phlyback | and how much code would be needed to add to u-boot to do it |
| 20:54.03 | SpeedEvil | Have you tried just reverting the patch? |
| 20:54.19 | phlyback | from what I am reading it's a dead duck |
| 20:58.59 | phlyback | <PROTECTED> |
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| 21:01.50 | SpeedEvil | I don't happen to know of any suitable projects. |
| 21:02.07 | SpeedEvil | It is possible - and not that hard to bit-bang a SD card. |
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| 23:48.54 | SpeedEvil | http://www.engadget.com/2011/05/29/linaro-and-samsung-roll-out-exynos-4210-based-origen-development/ More funkyness. |