ZFS: Difference between revisions
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*[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] | ||
= FAQ= | | ||
==show status== | |||
| |||
= 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: | |||
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 == | |||
zspool status | zspool status | ||
==show drives/pools== | == show drives/pools == | ||
zfs list | zfs list | ||
== check raid level == | |||
zfs list -a | |||
Revision as of 20:22, 27 December 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 /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
zspool status
show drives/pools
zfs list
check raid level
zfs list -a
