ESXi 6.5 Raw Device Mapping for SATA Disk Unusable
I have an old server running ESXi 6.5 (the latest version the hardware is compatible with) and have added two hard drives to a SATA controller on the host that I want to expose to an Ubuntu guest...
View ArticleHow to delete all but last [n] ZFS snapshots?
I'm currently snapshotting my ZFS-based NAS nightly and weekly, a process that has saved my ass a few times. However, while the creation of the snapshot is automatic (from cron), the deletion of old...
View ArticleRestore ZFS Pool after a broken HDD
i lost my ZFS Pool on a trueNAS System due to a failed / broken diskThe Pool was a non mirrored Pool with 4 HDD (6-10 TB each)I am working on a new trueNAS for backup all the files to a mirrored pool...
View ArticleZFS still writes to HDDs vdev while dataset is configure to store special for...
I'm facing a strange behaviour when using Docker together with ZFS.I have one pool with 2x10TB HDDs as mirror vdev and 2x250GB NVMEs as mirror for special vdev (to store metadata and datasets with...
View ArticleShould I create ZFS zpools with whole disks or partitions?
I am making zpools on FreeBSD machine. While creating zpools I observe these two cases:If I take raw disks and create zpool then I am able to form zpools and they are working perfectly.If I format...
View ArticleZFS import unable to find root pool on Ubuntu Server 22.04
I followed this video to install Ubuntu 22.04 LTS with software raid 1, but when I boot into Ubuntu and run zpool list my root pool (normally rpool) isn't listed.I tried some of the suggestions from...
View ArticleHow does zfs know which snapshots to send with the `-I` flag?
From the manual:A group of incremental snapshots can be combined into one snapshot byusing the zfs send -I option. For example:# zfs send -I pool/fs@snapA pool/fs@snapD > /snaps/fs@all-IHow does zfs...
View ArticleFor a server grade workstation, if I want raid1/mirror on root, is ZFS or...
Two questions in regards to read/write speed, reliability, security, and ease of access:What would be better for a server grade desktop, with ECC memory, for a raid 1 mirror on root, Linux software...
View Articlezfs - sanoid syncoid backups out of sync
I number of months back I switch to `zfs` and `syncoid`. I've just discovered that the backups I had set are out of date, even though I was under the impression I had configured `syncoid` correctly.I...
View Articlezpool mismatched replication level
I have accidentally added a mismatched raidz1 to an existing pool. Yes, I specified the '-f' to do it, but I was expecting to use the '-f' for a different reason and wasn't paying attention.Anyhoo......
View ArticleCan you set inode quotas in ZFS?
I figured out how to set block quotas in ZFS from the documentation on oracle's site.I didn't see if / how to setup a quota on how many inodes a user gets, though. I realize that there may not be...
View ArticleZpool scrub won't resume after reboot
Linux Mint 21.3Linux version 6.5.0-26-genericzfs-2.2.3-0ofthesun1zfs-kmod-2.2.0-0ubuntu1~23.10.2I've set up the zpool just fine, put some data on it and started a scrub. While this was in progress I...
View Articlezfs pool online but can't be imported "one or more devices is currently...
I recently moved my zfs pool from a 5 bay drive to a 10 bay drive and it can not be imported any more. The pool (nextcloud) appears to be online but when I tried to import it, it throws "one or more...
View ArticleZFS protection against bit rot and silent corruption without RAIDZ
I have never encountered a disk failure in my whole life but I had a dozen of bit rot and silent corruptions. 'Normal' file systems and hardware RAID does absolutely nothing about it. I have been using...
View ArticleWith ZFS snapshot rollback the file system remains unchanged
Server with latest version available and ZFS File System.I tried ZFS Snapshot. Below is the list of commands.First I check if the zpool is available and create the snapshot.At this point I copy a dozen...
View ArticleHow to access/import/mount a zfs file [migrated]
I've asked my wordpress hosting provider to give me a snapshot of the server as I'm looking to migrate the site elsewhere. What I've been given is a .zfs file.I was completely unaware of what zfs was...
View Articlezfs module not found on centos after restart
After I rebooted a CentOS server, ZFS does not work:$ sudo zfs listThe ZFS modules are not loaded.Try running '/sbin/modprobe zfs' as root to load them.$ sudo modprobe zfsmodprobe: FATAL: Module zfs...
View ArticleDebian & Broadcom: poor performance transferring files via network
I setup a new server running Debian Bullseye with Proxmox-kernel as a NAS to host mainly video content (so in general large files). I noticed an abysmally bad performance transferring files via SMB so...
View ArticleRepartitioning proxmox root/data LVM and zfs pool recovery
Ok so I created my first proxmox virtual environment about a month or two ago and due to inexperience and miscalculations I created a partition table I am not really happy with. Along with that it has...
View ArticleDisk does not spin down for unknown reasons - How to debug?
I have a setup where we need to spin down HDDs that host a zfs array for energy reasons. I use hdparm to configure apm = 24 and spindown_time = 24 for all disks.The system works as expected most of the...
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