Re: File system corruption after reboot, when rootfs in mounted over nfs

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Could someone please respond to my query.

Thanks,
Rajesh Dasari.


On Mon, Sep 18, 2017 at 4:14 PM, RAJESH DASARI <raajeshdasari@xxxxxxxxx> wrote:
> Hi ,
>
> Could some one please help me with the below issue.
>
> I have  booted a mips based hardware with linux (4.4.36 kernel
> )image(over tftp) and rootfs over nfs by passing nfsroot command line
> option to the kernel.
>
> rootfs is mounted under / in my hardware environment.
>
> 192.168.113.254:/rootfs / type nfs
> (rw,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.113.254,mountvers=3,mountproto=tcp,local_lock=all,addr=192.168.113.254)
>
> I have a hard disk and i am mounting  it on /mnt , this /mnt directory
> is part of nfsroot.
>
> e2fsck -f -y /dev/sda1 -> disk is clean with no errors.
>
> mount -t ext2 /dev/sda1 /mnt  (mount was successful ,mounting ext2 using ext4)
> touch /mnt/test.log  -> this command is failing.
> umount /mnt
> reboot
>
> when i was executing the above commands in a loop i see that /dev/sda1
> file system is getting corrupted. touch command is failing with
> "ext4_find_dest_de:1809: inode #2: block 771: comm touch: bad entry in
> directory: rec_len %4 !=0 -offset =0(0),
> inode=4278190080,rec_len=54507,name_len=229 touch : cannot touch
> /mnt/test.log structure needs clearing" error. I am able to reproduce
> this issue always when i boot rootfs over nfs , if i boot from hard
> disk , i am not noticing the issue .
>
>
>
> Could someone please help me on this , what could cause the ext4 file
> system corruption.
>
> Thanks,
> Rajesh Dasari.



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