more detailed failed disk replacement docs

diff --git a/README b/README
index 328751471791e8238aceaface448c14fc9ff53ac..5cc07de6778d64c7e98e372b674bcf2e0c2f22b7 100644 (file)
--- a/README
+++ b/README
@@ -116,15 +116,31 @@ fresize # resize swap or boot partitions in a host
 
 # Replacing a raid 10 disk
 
+
+
 pxe-server -S HOST fai
+
+# btrfs replace or delete. prefer replace. to setup partitions on replacement drive:
+scp fai-wrapper HOST:
+ssh root@HOST
+. fai-wrapper
+export SPECIAL_DISK=/dev/REPLACEMENT_DEV
+/var/lib/fai/config/hooks/partition.DEFAULT
+
+
 ssh root@HOST
-cat >p
 for x in /target/*; do umount $x; done
+cat >p
 PASSWORD HERE(ctrl-d ctrl-d)
-for d in /dev/disk/by-id/ata*part1; do cryptsetup luksOpen --key-file p $d crypt_dev_${d##*/}; done
-# btrfs replace disk # i forget the actual command
+cd /dev/disk/by-id/
+for d in ata*part1; do cryptsetup luksOpen -d /root/p $d crypt_dev_$d; done
 x=(/dev/mapper/*part1); mount -o subvol=root_trisquelflidas $x /mnt
+# btrfs fi show /mnt
+# btrfs replace start -f /dev/mapper/OLD_DEV /dev/mapper/NEW_DEV /mnt
+# btrfs replace status /mnt
+# nohup btrfs dev delete /dev/sde1 /mnt
 mount -o subvol=boot_trisquelflidas /dev/sda3 /mnt/boot
+# also replace or delete disk for boot
 for x in dev proc sys; do mount -o bind /$x /mnt/$x; done
 chroot /mnt /bin/bash
 # replace disk in fstab