I'm contemplating the idea of a replacement for my currently hosted 1U server. This server holds 4x 3.5" HDD and 1x 2.5" SSD, with this topology:
- first zpool ZRAID1 mirror 2x 1To + SSD L2ARC
- second zpool ZRAID1 mirror 2x 2To
My ideal next server would have 8x 2.5" SATA slots, and 1x...
I want to use a disk with ZFS and I want to use the best practices...
Both for an SSD and for an HDD
Delete the disk
# gpart destroy -F da0
# dd if=/dev/zero of=/dev/da0 bs=1m count=128
Prepare the disk
# gpart create -s GPT da0
# gpart add -t freebsd-zfs -l storage -a 1M da0...
The problem is this. As you know, the essence of TRIM is to clean up blocks that are no longer needed by the file system in the background, or with minimal impact on performance. On my own system, the picture is as follows. We create a file of 2 GB in size, delete it, and the disk spends all its...
I have 3 cheap consumer SSDs on hands and all of them reporting 512b sector size physical and logical.
And this is confuses me.
So I wonder, should I actually create ZFS pools on them with 512b sector size? Or I still should go with 4k?
I have old small 16GB SSD and now I got better 128GB Samsung 850 pro SSD. Copying stuff to new one is easy with dd, but what block size I should use with it?
I not sure what to do with old 16GB SSD, maybe it is good place for swap? 16GB SSD is ada0 and 128GB ada1.
Geom name: ada0...
Hi everyone! Few days ago I bought a new Samsung 860 EVO 250GB SSD and reinstalled FreeBSD 11.2-Release in it. But prior to installing FreeBSD, I first checked this brand new SSD on my Windows machine. I used the Samsung Magician and 2 other applications to test it and it passed with flying...
Currently FreeBSD has some bug with NVMe drives.
As I gather information about this issue, I'd like to share a comprehensive list of SSDs.
- Ones that reportedly work
Samsung 950 PRO
It is a new install on an old IBM tower server. I have played with 10.x 32 and 64 bit on it before but this is 64bit 11.1. I think there is an issue with a hard disk but it seems inconsistent.
The server is an IBM 84852AU 206m. The boot drive is a SATA 64GB ssd taken from and HP proliant...
I am experiencing problems with one of two Intel SSD since approx
July 2017. Reformatting the disc improved the situation for a while,
currently the disc is rejected during boot.
2 x SSD: INTEL SSDSC2BW480A4 DC32
Intel Patsburg AHCI SATA controller
The disk is part of a ZFS mirror:
Server intel NVME drives.
nvd0: <INTEL SSDPE2MX450G7> NVMe namespace
nvd0: 429247MB (879097968 512 byte sectors)
nvd1: <INTEL SSDPE2MX450G7> NVMe namespace
nvd1: 429247MB (879097968 512 byte sectors)
How do I split the disk correctly?
To split a SSD drive with a 4 offset?
I briefly looked at the net for information about SSDs (Solid State Drives) and freeBSD and found only confusing articles on the subject. Obviously it is not the fault of the authors it's just that I am not well versed on hardware.
Anyway I decided to put my queries here as I have a project on...
Hello. I have a server with only 3 SSD, I want to run only PostgreSQL on it. But I don't have idea what options of ZFS to use for best performance. Did anyone here such a setup, and can give me a hint?
I have FreeBSD 11 installed on SSD for my desktop. The whole system using ZFS. I need more space. so I want to add 1TB SATA, my question is
1. Do I have to gpart first ?
2. Do I have to
gpart add -t freebsd-ufs -a 1M ada1
Can I just gpart add - freebsd-zfs -a M ada1?
3. do I have to
I recently purchased a Samsung PM961 256GB SSD (m.2 PCIe) but ended up encountering a known bug:
This issue is not yet solved.
So, could anyone recommend me any m.2/PCIe SSD that works fine with FreeBSD 11.0? I'm personally...
I have two allegedly identical SanDisk SATA 3 SSD drives connected to my SATA 2 motherboard as a ZFS mirror. Until yesterday both these drives were happily operating in SATA2 mode at 300MB/s but now one of the drives (ada0) is only running in SATA 1 mode at 150MB/s.
I've swapped the drive...
I’ve never been in a server room from which I could not steal a random hard drive without getting caught, if I wanted. I have been in server hosting companies’ rooms in more than one countries.
Should I find one that employs guards with machine guns, still there is a point from which it isn’t...
I've solved this somewhat, but thought I'd bring it up here and see what comes of it. Been using FreeBSD for years on my home server, now wanted to test it out on my desktop machine.
Attempted to install 10.3-STABLE and 11-CURRENT but neither detected my Samsung 850 EVO SSD. Doesn't...
While using two different I/O generators, I'm seeing a huge performance difference. I'm hoping someone may know why. My guess is, the I/O path through the stack may be vastly different between the two tools.
Drive: PCIe HHHL, 3.2TB NVMe
Link: x4 PCIe 3.0
Driver: FreeBSD 10.3 nvme inbox
I don't understand why SSD's that have 512 sector size (logical and physical) have quirks=0x1<4K> mode? For example Samsung SSD 840-850 family.
Gpart thinking that SSD is 4k, then zfs thinking that SSD is 4k (ashift: 12). TRIM working really slow with deleting 20GB+ files (L(q) in gstat...
I let FreeBSD 10.2 Release's installer use the whole SSD.
Now I read about the tool gpart, so I typed gpart show, and this is what is displayed:
=> 63 250069617 ada0 MBR (119G)
63 63 - free - (32K)
126 249561018 1 freebsd [active] (119G)
249561144 508536 - free - (248M)...