Expanding RAID volume on NAS326 is not working

Night Hawk

I'm trying to follow the steps outlined by Joonas but I'm running into a problem when I try to check the file system on my disk before resizing the partition. I'm getting an error message saying /dev/md2 is in use. Is there any way to tell what process(es) are using it? 

Edit: I did some more investigation. I haven't used LINUX before but when I did "mount | grep /dev/sd" I saw my device was sdc2. I tried "e2fsck -f /dev/sdc2" and got an error message saying the volume was mounted and I ran would severely damage the disk if I proceeded. The drive isn't in use other than what I'm doing to it currently so is this a boilerplate error or am I risking damaging the file system by doing the check?

Mijzelf

Joonas list has one fatal flaw. After point 11 'enter :wq' you should run 'poweroff' to initiate the shutdown.

Night Hawk

I am doing "poweroff" after exiting vi. Are there any other processes that might be keeping the drive open?

Mijzelf

lsof | grep /dev/md2

might tell. I'm not sure if lsof is available.

What does 'ps' say?

Bliko01

Hello, I did the procedure
# umount /i-data/14fa6d39 

# e2fsck -f /dev/md2

e2fsck 1.42.12 (29-Aug-2014)

/dev/md2 is in use.

e2fsck: Cannot continue, aborting.

 # resize2fs /dev/md2

resize2fs 1.42.12 (29-Aug-2014)

resize2fs: Device or resource busy while trying to open /dev/md2

Couldn't find valid filesystem superblock.

Bliko01

used  e2fsck -f  and resize2fs command on /dev/vg_5809fa3c/lv_94593ae instead of md2.
It finally worked fine. Thanks a lot Mijzelf for your explanations

Jerry

trying to edit /etc/init.d/rc.shutdown, permission denied. Any comments

Mijzelf

You need to become 'root' first, by executing 'su'.

Jerry

Thank you Mijzelf, it worked out.