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UNIX Standards and Benchmarks
UNIX & LINUX Benchmarks (Version 3.11)
Linux Benchmarks
Filesystem Benchmarks for HDDs and SSDs
Post 303045211 by Peasant on Friday 13th of March 2020 02:27:21 PM
03-13-2020
Moderator
Would love to see zfs test on that ratio.
Should shine with separated l2arc devices on ssd, when it gets warm.
Be sure to limit ARC size in production scenarios, leaving <insert size> for large application allocations if required.
If you intend to benchmark zfs as well.
For KVM and ZFS inside VM(s), more tuning will be required... would not recommend inside virtual machines with additional layers on top of raw(s), qcow(s) or zvol(s)
Containers on the other hand work directly, so it should be interesting to see performance on LXC with zpool configured with L2ARC and log devices.
AFAIK transparent compression with snapshots/clones etc. outside brtfs and zfs will be hard to find on linux filesystems.
So it's XFS or EXT4 all the way i'm afraid with LVM inside hypervisors for flexibility.
Stripe it over those rust disks and explore LVM caching a bit (have not used it, but it's there
)
You will have everything but transparent compression @ your disposal.
Regards
Peasant.
Should shine with separated l2arc devices on ssd, when it gets warm.
Be sure to limit ARC size in production scenarios, leaving <insert size> for large application allocations if required.
If you intend to benchmark zfs as well.
For KVM and ZFS inside VM(s), more tuning will be required... would not recommend inside virtual machines with additional layers on top of raw(s), qcow(s) or zvol(s)
Containers on the other hand work directly, so it should be interesting to see performance on LXC with zpool configured with L2ARC and log devices.
AFAIK transparent compression with snapshots/clones etc. outside brtfs and zfs will be hard to find on linux filesystems.
So it's XFS or EXT4 all the way i'm afraid with LVM inside hypervisors for flexibility.
Stripe it over those rust disks and explore LVM caching a bit (have not used it, but it's there
)You will have everything but transparent compression @ your disposal.
Regards
Peasant.
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LEARN ABOUT CENTOS
blkdeactivate
BLKDEACTIVATE(8) BLKDEACTIVATE(8) NAME
blkdeactivate - utility to deactivate block devices SYNOPSIS
blkdeactivate [options] [device...] DESCRIPTION
blkdeactivate utility deactivates block devices. If a device is mounted, the utility can unmount it automatically before trying to deacti- vate. The utility currently supports device-mapper devices, including LVM volumes. LVM volumes are handled directly using the lvm command. Other device-mapper based devices are handled using the dmsetup command. OPTIONS
-e, --errors Show errors reported from tools called by blkdeactivate. Without this option, any error messages from these external tools are sup- pressed and the blkdeactivate itself provides only a summary message about device being skipped or not. -h, --help Display the help text. -u, --umount Unmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deactivated. -v, --verbose Run in verbose mode. -d, --dmoption dm_options Comma separated list of device-mapper specific options. -l, --lvmoption lvm_options Comma separated list of LVM specific options. DM_OPTIONS retry Retry removal several times in case of failure. force Force device removal. See dmsetup(8) for more information. LVM_OPTIONS retry Retry removal several times in case of failure. wholevg Deactivate the whole LVM Volume Group when processing a Logical Volume. Deactivating Volume Group as a whole takes less time than deactivating each Logical Volume separately. EXAMPLES
Deactivate all supported block devices found in the system. If a device is mounted, skip its deactivation. blkdeactivate Deactivate all supported block devices found in the system. If a device is mounted, unmount it first if possible. blkdeactivate -u Deactivate supplied device together with all its holders. If any of the devices processed is mounted, unmount it first if possible. blkdeactivate -u /dev/vg/lvol0 Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails. Deactivate the whole Volume Group at once when processing an LVM Logical Volume. blkdeactivate -u -d retry -l wholevg Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails and force removal. blkdeactivate -d force,retry SEE ALSO
lsblk(8) umount(8) dmsetup(8) lvm(8) Red Hat, Inc LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) BLKDEACTIVATE(8)