MacBook-Pro-Villa:curl cvillabrille$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
==> The following existing directories will be made group writable:
/usr/local/lib
==> The following existing directories will have their owner Read more...
OS Categories
Where almost everything resides.
Check current UUID blkid values:
root@datadroid:~# blkid|grep sda2 /dev/sda2: LABEL="omv" UUID="a4b494db-320a-4ce2-bb3a-841db943f9c0" TYPE="ext4" PARTUUID="000ddd31-02"
To update or modify the UUID run tune2fs
root@datadroid:~# tune2fs /dev/sda2 -U 804a6f55-0432-491b-9a97-65cff6571f3d
Check again root@datadroid:~# blkid|grep sda2 /dev/sda2: LABEL="omv" UUID="804a6f55-0432-491b-9a97-65cff6571f3d" TYPE="ext4" PARTUUID="000ddd31-02"
Deadline Scheduler
The deadline algorithm attempts to limit the maximum latency and keep the humans happy. Every I/O request is assigned its own deadline and it should be completed before that timer expires.
Two queues are maintained per device, one sorted by sector and the other by deadline. As long as no deadlines are expiring, the I/O requests are done in sector order to minimize head motion and provide best throughput.
Reasons to use the deadline scheduler include:
1: People use your system Read more...
If you try to stop a zone but it remains in shutting_down state, any further action will fail (i.e. detach)
root@solaris1:/root # zoneadm -z solariszone detach
zoneadm: zone 'solariszones': detach operation is invalid for shutting_down zones.
First important information is:
We should never kill the zsched process!!.
we have to check on the zone related zombi processes that are blocking our attempt to stop the zone (-z)
root@solaris1:/root # ps -fz solariszone
UID PID PPID C Read more...
To solve all the fmadm errors in a row, run:
# for i in ` fmadm faulty |grep Affect| awk {'print $3'}`; do echo $i; fmadm repaired $i; done