ZFS: Difference between revisions
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== Tuning arc settings == | == Tuning arc settings == | ||
arcstat | arcstat | ||
arc_summary | |||
grep c_max /proc/spl/kstat/zfs/arcstats | grep c_max /proc/spl/kstat/zfs/arcstats | ||
echo 5368709120 > /sys/module/zfs/parameters/zfs_arc_max | echo 5368709120 > /sys/module/zfs/parameters/zfs_arc_max | ||
maybe you need | maybe you need | ||
echo 3 > /proc/sys/vm/drop_caches | echo 3 > /proc/sys/vm/drop_caches | ||
Revision as of 16:39, 31 October 2021
Links
- ZFS on Linux
- https://wiki.gentoo.org/wiki/ZFS
- ZFS cheatsheet
- http://open-zfs.org
- http://wiki.freebsd.org/ZFSQuickStartGuide
- http://www.opensolaris.org/os/community/zfs/intro/
- http://en.wikipedia.org/wiki/ZFS
- http://www.edplese.com/samba-with-zfs.html
- ZFS calculator
- ZFS clustering
- {https://jrs-s.net/2015/02/03/will-zfs-and-non-ecc-ram-kill-your-data/ ZFS and ECC]
HOWTO
Replace disk in zfs
Some links
Get information first:
Name of disk
zpool status
Find uid of disk to replace
take it offline
zpool offline poolname ata-WDC_WD20EFRX-68EUZN0_WD-WCC4M5RLZC6V
Get the disk guid:
zdb
guid: 15233236897831806877
Get list of disk by id:
ls -al /dev/disk/by-id
Save the id, shutdown, replace disk, boot:
Find the new disk:
ls -al /dev/disk/by-id
Run replace command. The id is the guid of the old disk, name is of the new disk
zpool replace tank 13450850036953119346 /dev/disk/by-id/ata-ST4000VN000-1H4168_Z302FQVZ
Tuning arc settings
arcstat arc_summary grep c_max /proc/spl/kstat/zfs/arcstats echo 5368709120 > /sys/module/zfs/parameters/zfs_arc_max
maybe you need
echo 3 > /proc/sys/vm/drop_caches
FAQ
show status
zspool status
show drives/pools
zfs list
check raid level
zfs list -a
