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Top Forums UNIX for Beginners Questions & Answers CentOS 6 ran out of space, need to reclaim it Post 303038178 by stomp on Tuesday 27th of August 2019 12:48:52 PM
Old 08-27-2019
An additional note:

Under Linux there are SELinux and AppArmor around. They take care that services have only read/write/execute permissions which they need(predefined via config).

I do not know if they are armed at CentOS.

But if they are, file permissions are restricted to the configured mysql data location and one will get permission errors if moving the data directory without changing SELinux/AppArmor configuration as well.

---

What's regarding partition separation: I prefer all on the root-partition - as opposed to many recommendations especially from traditional unix administration point of view. My reason: It is simpler. I'm monitoring filespace, so it won't go undetected if the machines run low on space. I have a lot not so big machines. In another environment I might prefer seperated partitions.

What I recommend is to always use LVM. It's very flexible and you can move around filesystems to different disks online and can increase fs size online.

But to see the fact partition separation would have saved you in this case.

Last edited by stomp; 08-27-2019 at 02:04 PM..
 

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PARTITION(8)						      System Manager's Manual						      PARTITION(8)

NAME
partition - make a partition table SYNOPSIS
partition [-mf] device [type:]size[+*] ... DESCRIPTION
Partition makes a partition table on device using the types and sizes given. It may be used in combination with repartition(8) for auto- matic installation of Minix. You may give up to four type:size[+*] specifications for the partitions. You may also specify holes before, between, and after the parti- tions. A hole differs from a partition specification by not having a type. The first hole is by default 1 sector to make space for the primary bootstrap and the partition table. The other holes are 0. The type field is the type of the partitition in hexadecimal. The size field is the partition's size in sectors. The + or * may option- ally be added to indicate that the partition must be expanded to contain any leftover space on the device or to mark the partition active. Partitions are padded out to cylinder boundaries, except for the first one, it starts on track 1. Some operating systems care about this. Minix and MS-DOS do not. OPTIONS
-m Minix only, no need to pad partitions. This is the default for subpartition tables. -f Force making a partition table even if the device is too small. EXAMPLE
partition /dev/hd0 01:16384 81:40000 81:2880* 06:20000+ Partitions disk 0 into an 8 Mb DOS partition, 20 Mb Minix /usr, 1.44 Mb Minix / (active), and a DOS partition of at least 10 Mb at the end of the disk. (06:0+ would have been ok too, it's just a sanity check.) SEE ALSO
hd(4), part(8), repartition(8). AUTHOR
Kees J. Bot (kjb@cs.vu.nl) PARTITION(8)
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