Dev/md1/

[Peter-]

Hey guys,

I'm currently using centos 6.6 + plesk 12 which is quite good (as opposed to 11 which crashed on every single update lol).

My question is: I searched a bit on google but couldn't find a good answer .. what's md1 used for, why's it getting full and how to I stop that?

It's not actually full at the moment, only 25% of 500MB but still ...

Can someone enlighten me?

Thanks!

 

[IgorG]

/dev/md1 is RAID disk of your Linux server where Plesk installed. Maintenance of disks is Linux administrative task. Ask help of your system administrator who is familiar with Linux administration.

 

[Peter-]

Hello Igor,

I don't have an admin nor I currently plan on hiring one. My server has 2 SSDs running on RAID1 (check here for more info: https://www.hetzner.de/us/hosting/produkte_rootserver/ex40ssd )

So .. I have "some" linux / admin knowledge, but limited so can you help?

Thanks!

 

[IgorG]

Help with what? How to free up disk space? Just remove unnecessary big files.

 

[Peter-]

Well... if I go to /dev I see md1 listed, however, I cannot access it.

So ... does it actually exist as a folder? is it actually a link?

My dev/md2 partition in plesk shows only 6% full and it has 200GB total.

md1 only has 500mb and I cannot see what's inside of it. That's what I asked

It doesn't look to me like a regular partition from which I simply delete files ...

 

[Peter-]

So ...

# cd /
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md2 206G 17G 179G 9% /
tmpfs 16G 12K 16G 1% /dev/shm
/dev/md1 496M 120M 352M 26% /boot

# cd /boot
# ls -l --block-size=M

total 109M
lrwxrwxrwx 1 root root 1M Aug 14 2013 boot -> .
-rw-r--r-- 1 root root 1M May 8 2014 config-2.6.32-431.17.1.el6.x86_64
-rw-r--r-- 1 root root 1M Nov 11 2014 config-2.6.32-504.1.3.el6.x86_64
-rw-r--r-- 1 root root 1M Jun 9 23:25 config-2.6.32-504.23.4.el6.x86_64
-rw-r--r-- 1 root root 1M Jan 28 22:40 config-2.6.32-504.8.1.el6.x86_64
-rw-r--r-- 1 root root 1M Oct 15 2014 config-2.6.32-504.el6.x86_64
drwxr-xr-x 3 root root 1M Jul 11 2011 efi
drwxr-xr-x 2 root root 1M Jun 16 09:10 grub
-rw------- 1 root root 15M Jun 11 2014 initramfs-2.6.32-431.17.1.el6.x86_64.img
-rw------- 1 root root 16M Nov 25 2014 initramfs-2.6.32-504.1.3.el6.x86_64.img
-rw------- 1 root root 16M Jun 16 09:10 initramfs-2.6.32-504.23.4.el6.x86_64.img
-rw------- 1 root root 16M Feb 2 18:27 initramfs-2.6.32-504.8.1.el6.x86_64.img
-rw------- 1 root root 16M Oct 30 2014 initramfs-2.6.32-504.el6.x86_64.img
drwx------ 2 root root 1M Jul 11 2011 lost+found
-rw-r--r-- 1 root root 1M May 8 2014 symvers-2.6.32-431.17.1.el6.x86_64.gz
-rw-r--r-- 1 root root 1M Nov 11 2014 symvers-2.6.32-504.1.3.el6.x86_64.gz
-rw-r--r-- 1 root root 1M Jun 9 23:26 symvers-2.6.32-504.23.4.el6.x86_64.gz
-rw-r--r-- 1 root root 1M Jan 28 22:41 symvers-2.6.32-504.8.1.el6.x86_64.gz
-rw-r--r-- 1 root root 1M Oct 15 2014 symvers-2.6.32-504.el6.x86_64.gz
-rw-r--r-- 1 root root 3M May 8 2014 System.map-2.6.32-431.17.1.el6.x86_64
-rw-r--r-- 1 root root 3M Nov 11 2014 System.map-2.6.32-504.1.3.el6.x86_64
-rw-r--r-- 1 root root 3M Jun 9 23:25 System.map-2.6.32-504.23.4.el6.x86_64
-rw-r--r-- 1 root root 3M Jan 28 22:40 System.map-2.6.32-504.8.1.el6.x86_64
-rw-r--r-- 1 root root 3M Oct 15 2014 System.map-2.6.32-504.el6.x86_64
-rwxr-xr-x 1 root root 4M May 8 2014 vmlinuz-2.6.32-431.17.1.el6.x86_64
-rwxr-xr-x 1 root root 4M Nov 11 2014 vmlinuz-2.6.32-504.1.3.el6.x86_64
-rwxr-xr-x 1 root root 4M Jun 9 23:25 vmlinuz-2.6.32-504.23.4.el6.x86_64
-rwxr-xr-x 1 root root 4M Jan 28 22:40 vmlinuz-2.6.32-504.8.1.el6.x86_64
-rwxr-xr-x 1 root root 4M Oct 15 2014 vmlinuz-2.6.32-504.el6.x86_64

So I guess it kept the old kernel images on every upgrade and it's better to keep them there unless it's getting close to 100% ?

 

[IgorG]

You have /dev/md1 mounted as /boot where lot of old kernel versions are stored. Just remove them if it is so critical for you.

 

[Peter-]

It's not critical at the moment, but wanted to know before it reaches 100%

I removed oldest 2 for now.

Thanks!

 

[IgorG]

Just clarification - this is Plesk but not common Linux forum

 

[Peter-]

As stated, my linux knowledge is limited, so I couldn't spot the difference between common linux and plesk configs