From 3577013d1a0121485654ce16aa3ac5f7c0127841 Mon Sep 17 00:00:00 2001 From: Dobrica Pavlinusic Date: Fri, 5 Mar 2021 14:39:52 +0100 Subject: [PATCH] ssd raid5 migration --- doc/2021-03-04-ssd-raid5.txt | 39 ++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 doc/2021-03-04-ssd-raid5.txt diff --git a/doc/2021-03-04-ssd-raid5.txt b/doc/2021-03-04-ssd-raid5.txt new file mode 100644 index 0000000..badb0a6 --- /dev/null +++ b/doc/2021-03-04-ssd-raid5.txt @@ -0,0 +1,39 @@ +root@lib24:~# mdadm --create /dev/md0 --level=5 --raid-devices=4 /dev/sd{a,b,c,d} + +root@lib24:~# pvcreate /dev/md0 + Physical volume "/dev/md0" successfully created. + +root@lib24:~# vgcreate ffzgvg /dev/md0 + Volume group "ffzgvg" successfully created + +root@lib24:/srv/gnt-info/doc# sysctl dev.raid.speed_limit_max +dev.raid.speed_limit_max = 200000 +root@lib24:/srv/gnt-info/doc# sysctl dev.raid.speed_limit_max=500000 +dev.raid.speed_limit_max = 500000 + +root@lib26:~# cd /sys/fs/bcache/*-*-* + +root@lib26:/sys/fs/bcache/3b03ccb9-c932-44b6-95ad-791b91da6186# echo 1 > stop + +root@lib26:/sys/fs/bcache/3b03ccb9-c932-44b6-95ad-791b91da6186# wipefs -a /dev/sde3 +/dev/sde3: 16 bytes were erased at offset 0x00001018 (bcache): c6 85 73 f6 4e 1a 45 ca 82 65 f5 7f 48 ba 6d 81 + +root@lib26:~# gdisk /dev/sde + +Command (? for help): t +Partition number (1-3): 3 +Current type is 'Linux filesystem' +Hex code or GUID (L to show codes, Enter = 8300): 8e00 +Changed type of partition to 'Linux LVM' + +Command (? for help): wq + +root@lib26:~# pvcreate /dev/sde3 + Physical volume "/dev/sde3" successfully created. + +root@lib26:~# vgcreate ssd /dev/sde3 + Volume group "ssd" successfully created + + + + -- 2.20.1