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UNIX for Beginners Questions & Answers
CentOS 6 ran out of space, need to reclaim it
Post 303038176 by Peasant on Tuesday 27th of August 2019 12:41:26 PM
08-27-2019
Moderator
To conclude check /etc/fstab for the mentioned mountpoint.
On first glance, a server was rebooted and came up without the mountpoint.
It happily worked until root filesystem is full, since same contains the service in question - mysql database.
At least, separate database filesystem as a logical volume, or even better a new disk partition with volume group.
A wise choice would be to separate /var inside root volume group, not now but for future projects
With seperate /var and mysql, you are very likely to survive full / partition without downtime.
In your case, only backup would not work, instead of making system almost unusable.
Regards
Peasant.
On first glance, a server was rebooted and came up without the mountpoint.
It happily worked until root filesystem is full, since same contains the service in question - mysql database.
At least, separate database filesystem as a logical volume, or even better a new disk partition with volume group.
A wise choice would be to separate /var inside root volume group, not now but for future projects
With seperate /var and mysql, you are very likely to survive full / partition without downtime.
In your case, only backup would not work, instead of making system almost unusable.
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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LEARN ABOUT OSF1
volrootmir
volrootmir(8) System Manager's Manual volrootmir(8) NAME
volrootmir - Mirror areas necessary for booting to a new disk SYNOPSIS
/usr/sbin/volrootmir [-a] [nconfig=count] target_disk [swap=target_partition] OPTIONS
Specifies that all volumes on the system disk be mirrored, not just the root and swap volumes, rootvol and swapvol. DESCRIPTION
The volrootmir script causes a mirror copy of areas of the root disk involved in booting to be made on the specified target disk. When used without the -a option, volrootmir adds mirrors of the root and swap volumes and allocates them on the new disk. In addition, all disk regions required for booting are set up and partitions for the new volume mirrors are created. When used with the -a option, volrootmir mirrors all in-use partitions on the system disk. To mirror a swap volume that is on a separate disk from the root volume, the swap attribute must be used to specify a separate target for the swap mirror. The target disk(s) must be at least as large as the sum of the sizes of rootvol and swapvol. Also, the physical disk should not have any disk partition in use. This script can be called from the voldiskadm menus by choosing the Mirror volumes on a disk operation. ATTRIBUTES
Specifies the number of log copies and copies of the configuration database, for example, nconfig=2. Specifies that the swap volume, swapvol, be mirrored on a separate disk, as specified by target_partition. EXAMPLES
The following command mirrors the rootvol and swapvol volumes onto the target disk, dsk3. This command will fail if swapvol is on a differ- ent disk from rootvol. # volrootmir dsk3 The following command mirrors rootvol, swapvol, and any other volumes on the root disk onto the target disk, dsk3. This command will fail if swapvol is on a different disk from rootvol. # volrootmir -a dsk3 The following command mirrors rootvol on disk dsk3, swapvol onto partition dsk7d, and any other volumes on the root disk onto disk dsk3. This command will fail if swapvol is on the same disk as rootvol. # volrootmir -a dsk3 swap=dsk7d The following command mirrors rootvol onto disk dsk3 and swapvol onto partition dsk7d. This command will fail if swapvol is on the same disk as rootvol. # volrootmir dsk3 swap=dsk7d SEE ALSO
volintro(8), voldiskadm(8) volrootmir(8)