1
How do I get the total disk space available in Solaris 10?
iostat -En, but it is not showing the correct data. df -h contains duplicate information.Is there any generic way to find the total disk space in Solaris 10?
prasanna
Posted 2013-08-05T05:40:12.843
Reputation: 121
2
Assuming that by duplicate information, you mean you are confused by df available space column reporting the same value for different ZFS file systems located in the same pool, I would suggest to use the zpool list command to get disk statistics similar to what df outputs for traditional file systems.
eg:
$ zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
zp 97.5G 46.0G 51,5G 47% 1.00x ONLINE -
Note that the reported numbers are directly usable only when a single backend device is used for the pool, or if it built on concatenated disks only. When using mirroring or any form of raidz, it is much more complex to estimate the actual free space, not to mention if compression and/or deduplication is activated...
jlliagre
Posted 2013-08-05T05:40:12.843
Reputation: 12 469
If the pool is using RAID vdevs, this doesn’t display the usable capacity/free but backend capacity/free, which is much greater, depending on RAID level. – Daniel B – 2016-01-26T16:26:56.853
@DanielB Double check, zpool does display the usable capacity regardless of the raid level, or lack of, not the backend one. – jlliagre – 2016-01-26T16:51:51.277
Usable, yes. It’s not the space available for data though. See here.
– Daniel B – 2016-01-26T21:43:15.427@DanielB Got it, thanks. The reported numbers are indeed confusing when mirroring or raidz variants are used. The actual available space is only relatively accurate with a single device or when the backend devices are simply concatenated. Answer updated. – jlliagre – 2016-01-26T22:36:08.033
Thanks for the command, it worked well in 5.11, will check in some other versions of solaris. – prasanna – 2013-08-20T05:28:53.827
This command definitely works with all versions of Solaris supporting ZFS and more generally with any OS supporting ZFS. – jlliagre – 2013-08-20T05:49:41.747
0
df
Use the df command to show the amount of free disk space on each mounted disk.
df -k
Use the df -k command to display disk space information in Kbytes.
user243290
Posted 2013-08-05T05:40:12.843
Reputation: 1
df -k command shows disk space in bytes, while summing up the size gives wrong data, since it lists every logical mount. The below command will not give the unique list, i need to get a unique mount list, so that, i can get the correct size df -k | awk 'NR>1' | awk '{x+=$2} END {print x}' – prasanna – 2013-08-05T06:32:11.863
0
You may use the -t <filesys> option of df, to limit its output to some types of file system, As an example, on my system df -h gives :
Filesystem Size Used Avail Use% Mounted on
rootfs 63G 19G 42G 31% /
/dev/sda3 63G 19G 42G 31% /
devtmpfs 2.0G 0 2.0G 0% /dev
tmpfs 2.0G 804K 2.0G 1% /run
shm 2.0G 0 2.0G 0% /dev/shm
cgroup_root 10M 0 10M 0% /sys/fs/cgroup
/dev/sda2 16G 4.0G 11G 27% /var
/dev/sda6 834G 52G 741G 7% /home
while df -h -t ext4 gives :
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 63G 19G 42G 31% /
/dev/sda2 16G 4.0G 11G 27% /var
/dev/sda6 834G 52G 741G 7% /home
If you want to sum over more than one type of partition, just add an other -t option, like :
df -h -t ext4 -t ext3 -t vfat
Levans
Posted 2013-08-05T05:40:12.843
Reputation: 2 010
This does not look like Solaris output. – jww – 2016-07-09T18:00:02.690
iostat -Enhas no idea about how the disks are used (or not), it displays the whole device size. – jlliagre – 2013-08-05T05:59:14.253Hi jlliagre, you are right, i have given it wrong. Correct command is df -k, But,it contains duplicate info. How to remove it and get exact disk space. – prasanna – 2013-08-19T09:30:17.270