ZFS fast scrub: Difference between revisions
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But it worked for me: | But it worked for me: | ||
< | <syntaxhighlight lang=bash> | ||
# echo "zfs_scrub_delay/D" | mdb -k | # echo "zfs_scrub_delay/D" | mdb -k | ||
zfs_scrub_delay: | zfs_scrub_delay: | ||
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Remember to set it back to the old value later (4 in this example)! | Remember to set it back to the old value later (4 in this example)! | ||
< | <syntaxhighlight lang=bash> | ||
# echo "zfs_scrub_delay/W4" | mdb -kw | # echo "zfs_scrub_delay/W4" | mdb -kw | ||
zfs_scrub_delay:0x0 = 0x4 | zfs_scrub_delay:0x0 = 0x4 | ||
Revision as of 16:37, 25 November 2021
NEVER DO THIS!!!
If you need a fast scrub to get to production state after an bloody hard unplanned downtime... and so on...
I would expect you to not to do this.
But it worked for me: <syntaxhighlight lang=bash>
- echo "zfs_scrub_delay/D" | mdb -k
zfs_scrub_delay: zfs_scrub_delay:4
- echo "zfs_scrub_delay/W0" | mdb -kw
zfs_scrub_delay:0x4 = 0x0 </source>
This sets the scrub delay to zero... your system will do a lot of scrubbing and not so much other things.
Remember to set it back to the old value later (4 in this example)! <syntaxhighlight lang=bash>
- echo "zfs_scrub_delay/W4" | mdb -kw
zfs_scrub_delay:0x0 = 0x4 </source>
But remember I told you: NEVER DO THIS!!!
