FYI:
One can replace the "zpool import -f -a -o cachefile=none -N" line with this:
local pipe="/tmp/zpool_pipe"
no_import_pools=$(mkfifo ${pipe}; zpool import -f -a -o cachefile=none -N
2> ${pipe} | cut -d \' -f 2 ${pipe}; rm ${pipe})
If one wants a list of the pools which can not be imported.
To just discard the error though and keep update-grub from failing this
works fine too:
local discard_pool_import_err=""
discard_pool_import_err=$(zpool import -f -a -o cachefile=none -N 2>/dev/null
|| true)
Maybe that workaround could be added so update-grub at least doesn't
fail if a zpool which can't be imported is seen?
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https://bugs.launchpad.net/bugs/1848399
Title:
update-grub fails if zpools with unsupported feature_flags exist
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