ZFS: Difference between revisions
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*[http://wintelguy.com/zfs-calc.pl ZFS calculator] | *[http://wintelguy.com/zfs-calc.pl ZFS calculator] | ||
*[https://bm-stor.com/index.php/blog/Linux-cluster-with-ZFS-on-Cluster-in-a-Box/ ZFS clustering] | *[https://bm-stor.com/index.php/blog/Linux-cluster-with-ZFS-on-Cluster-in-a-Box/ ZFS clustering] | ||
* | *[https://jrs-s.net/2015/02/03/will-zfs-and-non-ecc-ram-kill-your-data/ https://jrs-s.net/2015/02/03/will-zfs-and-non-ecc-ram-kill-your-data/] ZFS and ECC] | ||
*[https://docs.joyent.com/private-cloud/troubleshooting/disk-replacement ZFS troubleshooting/disk replacement] | *[https://docs.joyent.com/private-cloud/troubleshooting/disk-replacement ZFS troubleshooting/disk replacement] | ||
*[http://www.raidz-calculator.com/raidz-types-reference.aspx raidz types reference] | |||
*[https://linuxhint.com/configure-zfs-cache-high-speed-io/ Using and tuning ARC] | |||
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= HOWTO = | |||
== Replace disk in zfs == | |||
= | === Some links === | ||
*[https://itectec.com/ubuntu/ubuntu-replacing-a-dead-disk-in-a-zpool/ https://itectec.com/ubuntu/ubuntu-replacing-a-dead-disk-in-a-zpool/] | |||
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: | Get list of disk by id: | ||
| Line 34: | Line 53: | ||
ls -al /dev/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 /dev/disk/by-id/13450850036953119346 /dev/disk/by-id/ata-ST4000VN000-1H4168_Z302FQVZ | |||
===FAQ=== | |||
====invalid vdev specification==== | |||
Probably means you need -f | |||
== 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 = | = FAQ = | ||
== show status == | == show status and disks == | ||
zpool status | |||
== show drives/pools == | == show drives/pools == | ||
Revision as of 17:13, 30 June 2022
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 /dev/disk/by-id/13450850036953119346 /dev/disk/by-id/ata-ST4000VN000-1H4168_Z302FQVZ
FAQ
invalid vdev specification
Probably means you need -f
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 and disks
zpool status
show drives/pools
zfs list
check raid level
zfs list -a
