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mailinglists35/zfs-veracrypt-failed-usb-cable.txt

Last active July 7, 2023 14:11
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recover veracrypt zfs pool after failed usb cable, without reboot
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zfs-veracrypt-failed-usb-cable.txt
********************************************************************************
WARNING THESE ARE MY PARTICULAR CASE NOTES MADE PUBLIC SO I CAN EASILY FIND THEM
DO NOT BLINDLY PASTE WITHOUT UNDERSTANDING WHAT DO THESE COMMANDS DO
********************************************************************************
dmsetup table | grep veracrypt
veracrypt2: 0 3904923136 crypt aes-xts-plain64 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 256 8:34 256
dmsetup reload veracrypt2 --table "0 3904923136 error"
dmsetup suspend --noflush veracrypt2
dmsetup resume veracrypt2
(?)zpool clear backup-usb
remove from veracrypt UI
echo "0 3904923136 zero" | dmsetup reload veracrypt2
dmsetup suspend --noflush veracrypt2
dmsetup resume veracrypt2
dmsetup remove veracrypt2
re-setup dm table from veracrypt UI
zpool clear backup-usb
scrub will start automatically
errors will be found
export pool
reimport
scrub again
@Animeshz
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Animeshz commented Jul 6, 2023

How do you force the zfs to use devmapper virtual device instead of real device?

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when you import, you direct it to import from /dev/mapper
zpool import -d /dev/mapper

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