I have a FreeBSD server which used to run of a smaller SSD drive. When replaced with a larger capacity SSD by using dd command to clone the disk, there is free space allocated. I want to extend the existing zroot pool to use this space. The following describes how I achieve this with the help of a forum post. Let’s list some information about the zroot pool: root@nas:~ # zfs list zroot NAME USED AVAIL REFER MOUNTPOINT zroot 4....
Recently one of my servers that runs FreeBSD 11.1 keeps hanging on boot. Usually, the 2nd hard reboot will fix it. The root file system on this server is using ZFS and the ZFS pool report it as healthy. So I’ve been reluctant to do anything about it. Until tonight, when I accidentally list the partition of that drive (ada4): Ahh.. [CORRUPT] partition table it seems. I think the reason the server can still boot because GPT keeps the partition tables in two places (yes, one of the more reason to use GPT over MBR)....
My main machine at home has been upgraded from Fedora 26 to 27 since the day the 27 was released. Everything has been working great, except the ZFS file system. I’m a ZFS-believer and I store my important files on ZFS-based storage. For a while there was no repository for Fedora 27 provided by zfsonlinux, until 6 days ago. I have been using packages provided for Fedora 26 as work around solution....
I love ZFS, but there is something that has annoyed me for quite sometimes – the zpool doesn’t get automatically mounted on boot. To work around this, I had to login as root and run: to import tank pool before I login with my normal user account. Well, I finally found a solution. This is what’s written on zfsonlinux/zfs WIFI about Fedora specifically: Systemd Update: When upgrading to the zfs-0.6.5.8 release it’s recommended that users manually reset the zfs systemd presets....
After I had my Fedora 24 upgraded to 25 on my desktop, ZFS no longer worked. I tried to remove zfs package and reinstalled; it didn’t work. Here’s how I got it working after trying many things. There could be a different way to fix it, though. Let’s check the version of the kernel: Check if spl, zfs are already installed: Manually install spl, dkms: Load zfs module: Voilla, I got ZFS working again....
Today I successfully upgraded my FreeBSD home nas server from 10.3 to 11.0. This is the final release of version 11.0, though the official announcement is expected to be made on September 28. After the system upgrade, I need to also upgrade the 2 zpools (tank and zroot) so they can have new features. Upgrading tank was easy, all I needed to do was running this command: # zpool upgrade tank This system supports ZFS pool feature flags....
I use ZFS as a storage driver for docker engine running on my machine. Today after my machine rebooted from a crash, yes Linux system crashes too, I notice that all my docker images and containers disappeared. First thing came to my mind was “did I accidentally destroy docker zfs data set last night?” It’s still there. At that point I suspected that Docker might no longer use ZFS as its data storage....
I’m running ZFS on Fedora 23 and I notice that there’re new features which can be enabled in the existing pool. Get the ZFS version for tank’s pool: Huh? I’m not sure why there’s no value set on ZFS running on Linux. Well, let’s upgrade the pool: It seems to have been successfully upgraded. Let’s verify: Ref: http://freebsd.pro/topic/12/
First we need to add the ZFS on Linux repository to our system by installing a zfs-release package as shown below: $ sudo yum localinstall --nogpgcheck http://archive.zfsonlinux.org/epel/zfs-release-1-3.el6.noarch.rpm $ sudo yum install zfs Once, zfs has been installed, we can create a storage pool. There’re many RAID configuration to choose from, and I’m not going to get into it. However, if you want to learn more, you can read this ZFS Administration article which explains in great detail about ZFS RAID(Z)....
This what I have: # zpool status pool: tank state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 To convert the pool to use disk’s ID instead of device files such as /dev/sda, we need to export the storage pool. # zpool export tank After this command is executed, the pool tank is no longer visible on the system....