Hi,
I am unable to understand that, in one of my servers while
df -kh
Filesystem Size Used Available Capacity Mounted on
rpool/ROOT/solaris-2 98G 11G 29G 29% /
Even the Root FS filled on 40gb and system becomes unstable.
it is showing 40gb usable and whole size is 98gb.
root@xxx # zpool iostat -v rpool
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
rpool 67.7G 31.8G 0 23 5.59K 414K
c2d0 67.7G 31.8G 0 23 5.59K 414K
root@xxx # zfs get volsize rpool/dump
NAME PROPERTY VALUE SOURCE
rpool/dump volsize 15G local
root@xxx # zfs get volsize rpool/swap
NAME PROPERTY VALUE SOURCE
rpool/swap volsize 32G local
root@xxx # zfs list
NAME USED AVAIL REFER MOUNTPOINT
ldom1pool 500G 1.12T 32K legacy
ldom1pool/opt 36.1G 1.12T 36.1G /opt
ldom1pool/opt-abc 149G 1.12T 149G /opt/abc
ldom1pool/opt-def 84.2G 1.12T 84.2G /opt/def
ldom1pool/opt-ghi 31K 1.12T 31K /opt/ghi
ldom1pool/swap 231G 1.12T 224G -
ldom1pool/u02 31K 1.12T 31K /u02
ldom1pool/u03 31K 1.12T 31K /u03
ldom1pool/u04 31K 1.12T 31K /u04
rpool 69.2G 28.7G 73.5K /rpool
rpool/ROOT 14.5G 28.7G 31K legacy
rpool/ROOT/solaris-2 14.5G 28.7G 11.5G /
rpool/ROOT/solaris-2/var 2.07G 28.7G 2.00G /var
rpool/VARSHARE 1.39G 28.7G 1.39G /var/share
rpool/dump 15.5G 29.2G 15.0G -
rpool/export 4.79G 28.7G 32K /export
rpool/export/home 4.79G 28.7G 9.75M /export/home
rpool/export/home/u# 143M 28.7G 143M /export/home/u1
rpool/export/home/u# 32.5M 28.7G 32.5M /export/home/u#
rpool/export/home/u# 35K 28.7G 35K /export/home/u#
rpool/export/home/u# 4.61G 28.7G 4.61G /export/home/u#
rpool/export/home/u# 35K 28.7G 35K /export/home/u#
rpool/export/home/u# 38.5K 28.7G 38.5K /export/home/u#
rpool/export/home/u# 35K 28.7G 35K /export/home/u#
rpool/swap 33.0G 29.7G 32.0G -
Please help me to understand where the rest space gone.
Take a look of the output of following commands :
zfs get -r reservation,refreservation,quota,refquota rpool
zfs list -t snapshot -r rpool
beadm list
Perhaps that will offer a clearer picture of status of your rpool zpool regarding space, reservation, quotas and such.
On the first glance, you have 32 GB of swap space defined inside rpool, do you require that much for some reason ?
You might want to define a new device or even a swap file on different disk/pool and free the rpool of mentioned 32GB.
Regards
Peasant.
1 Like
Just have a look to the column labeled "REFER" in "zfs list" output. It shows for each dataset the actual size occupied by that dataset.
Out of a 100 GB pool, 32 GB is taken by the swap area, 15 GB by the dump area, 11.5 by the root file system, 4.61 Gb by a user's file system, 2 GB by /var, 1.39 GB by /var/share. All remaining datasets are much smaller. The sum of all REFER values is 70 GB which match the 29 GB available you got with "df".
I would recommend being careful with reducing the swap size unless you really know how much swap your system might need in the future. Relocating the swap elsewhere, as already suggested by Peasant, would on the other hand be a good idea and the simplest way to recover 32 GB of disk space in your root pool. You might also relocate your 15 GB dump area elsewhere but there are more constraints about the receiving pool.
1 Like
Hi,
Please find the o/p of said commands,
root@xxx # zfs get -r reservation,refreservation,quota,refquota rpool
NAME PROPERTY VALUE SOURCE
rpool reservation none default
rpool refreservation none default
rpool quota none default
rpool refquota none default
rpool/ROOT reservation none default
rpool/ROOT refreservation none default
rpool/ROOT quota none default
rpool/ROOT refquota none default
rpool/ROOT/solaris-2 reservation none default
rpool/ROOT/solaris-2 refreservation none default
rpool/ROOT/solaris-2 quota none default
rpool/ROOT/solaris-2 refquota none default
rpool/ROOT/solaris-2@install reservation - -
rpool/ROOT/solaris-2@install refreservation - -
rpool/ROOT/solaris-2@install quota - -
rpool/ROOT/solaris-2@install refquota - -
rpool/ROOT/solaris-2/var reservation none default
rpool/ROOT/solaris-2/var refreservation none default
rpool/ROOT/solaris-2/var quota none default
rpool/ROOT/solaris-2/var refquota none default
rpool/ROOT/solaris-2/var@install reservation - -
rpool/ROOT/solaris-2/var@install refreservation - -
rpool/ROOT/solaris-2/var@install quota - -
rpool/ROOT/solaris-2/var@install refquota - -
rpool/VARSHARE reservation none default
rpool/VARSHARE refreservation none default
rpool/VARSHARE quota none default
rpool/VARSHARE refquota none default
rpool/dump reservation none default
rpool/dump refreservation 15.5G local
rpool/dump quota - -
rpool/dump refquota - -
rpool/export reservation none default
rpool/export refreservation none default
rpool/export quota none default
rpool/export refquota none default
rpool/export/home reservation none default
rpool/export/home refreservation none default
rpool/export/home quota none default
rpool/export/home refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/export/home/u# reservation none default
rpool/export/home/u# refreservation none default
rpool/export/home/u# quota none default
rpool/export/home/u# refquota none default
rpool/swap reservation none default
rpool/swap refreservation 33.0G local
rpool/swap quota - -
rpool/swap refquota - -
You have new mail in /var/mail/root
root@xxx # zfs list -t snapshot -r rpool
NAME USED AVAIL REFER MOUNTPOINT
rpool/ROOT/solaris-2@install 1.01G - 2.03G -
rpool/ROOT/solaris-2/var@install 70.8M - 96.8M -
root@xxx # beadm list
BE Active Mountpoint Space Policy Created
-- ------ ---------- ----- ------ -------
solaris-2 NR / 17.51G static 2015-02-26 22:47
---------- Post updated 03-23-16 at 12:45 AM ---------- Previous update was 03-22-16 at 11:40 PM ----------
Hi,
I am completely new to zfs, can you plz suggest the way by which i can first remove and then recreate swap and dump to other place which can be referred by system.
I know i am asking for too much but plz help, if it would be solaris 10 then i can do all but here i need help or any reference for it.
**This system is very very critical
Here are some useful starting points:
https://docs.oracle.com/cd/E26502_01/html/E29006/fsswap-14677.html\#scrolltoc
https://docs.oracle.com/cd/E53394_01/html/E54764/dumpadm-1m.html
The method would have been essentially the same with Solaris 10 if installed with root ZFS.
Then, build a test system where you experience and familiarize with the technology before attempting any change on that system. Note that a "very very critical system" should have an alternate boot environment ready to take over should you need to rollback for some reason. This is doesn't look to be the case with yours.