Forum Discussion
1 Reply
Sort By
The partitions are actually each a set of logical volumes. Before the free space on a logical volume can be checked it's need to be mounted. I wrote a little perl script that can help you get this info.
!/usr/bin/perl -W use strict; my $lvs = '/sbin/lvs'; open(FH,"$lvs|"); while() { if(/([A-Za-z0-9\.-_]+)\s+([A-Za-z0-9\.\-_]+)\s+([a-z\-]+)/) { if($3 eq "-wi-a----") { lv_usage($1,$2); } else { df_usage($1,$2); } } } close FH; sub lv_usage { my $lv = shift; my $vg = shift; print "\nDisk usage for $lv\n"; mkdir "/mnt/$lv"; system("/bin/mount /dev/$vg/$lv /mnt/$lv -o ro,user"); system("/bin/df -h /mnt/$lv"); system("/bin/umount /mnt/$lv"); rmdir "/mnt/$lv"; } sub df_usage { my $lv = shift; my $vg = shift; print "\nDisk usage for $lv\n"; system("/bin/df -h /dev/$vg/$lv"); }
The output shows something like this:
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] ~ ./lvm-check-free-space.pl Disk usage for app.ASWADB.set.1.mysqldb Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-app.ASWADB.set.1.mysqldb 12G 680M 11G 6% /mnt/app.ASWADB.set.1.mysqldb Disk usage for app.ASWADB.set.2.mysqldb Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-app.ASWADB.set.2.mysqldb 12G 753M 11G 7% /var/lib/mysql Disk usage for app.afm.dat.afmdata Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-app.afm.dat.afmdata 3.8G 65M 3.5G 2% /shared/avr_afm Disk usage for app.asm.dat.asmdata Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-app.asm.dat.asmdata 3.8G 65M 3.5G 2% /var/asm Disk usage for app.avr.dat.avrdata Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-app.avr.dat.avrdata 3.8G 65M 3.5G 2% /shared/avr Disk usage for dat.log.1 Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-dat.log.1 485M 68M 392M 15% /var/log Disk usage for dat.maint.1 Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-dat.maint.1 291M 11M 266M 4% /mnt/dat.maint.1 Disk usage for dat.share.1 Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-dat.share.1 20G 3.5G 16G 19% /shared Disk usage for dat.swapvol.1 Filesystem Size Used Avail Use% Mounted on - 4.0G 212K 4.0G 1% /dev Disk usage for set.1._config Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.1._config 3.1G 367M 2.6G 13% /mnt/set.1._config Disk usage for set.1._usr Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.1._usr 3.2G 1.9G 1.2G 62% /mnt/set.1._usr Disk usage for set.1._var Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.1._var 3.1G 1.1G 1.9G 36% /mnt/set.1._var Disk usage for set.1.root Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.1.root 380M 212M 149M 59% /mnt/set.1.root Disk usage for set.2._config Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.2._config 3.2G 373M 2.6G 13% /config Disk usage for set.2._usr Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.2._usr 3.3G 2.2G 970M 70% /usr Disk usage for set.2._var Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.2._var 3.0G 1.9G 995M 66% /var Disk usage for set.2.root Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.2.root 427M 179M 226M 45% / [root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] ~
DISCLAIMER: Use at own risk 😉