friedhof:sys03:filesystem
sys03 - filesystem & disk layout
# at start:
df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md2 1065281580 726100 1010868448 1% /
tmpfs 8080436 0 8080436 0% /lib/init/rw
udev 8074924 164 8074760 1% /dev
tmpfs 8080436 0 8080436 0% /dev/shm
/dev/md1 507836 37996 443628 8% /boot
/dev/md3 1828890816 200560 1736519540 1% /home
(parted) p
Model: ATA ST3000DM001-9YN1 (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Number Start End Size File system Name Flags
5 1049kB 2097kB 1049kB bios_grub
1 2097kB 12.9GB 12.9GB raid
2 12.9GB 13.4GB 537MB raid
3 13.4GB 1113GB 1100GB raid
4 1113GB 3001GB 1888GB raid
this does not fit the operational concept (vserver host
with individual volumes per vserver)
##
## plan:
## lvm setup
## repartitioning (1TB slices to reduce possible crash impacts )
## create lvs for / and /boot
##
##
## disk-reorg:
## there are 12GB swap which are not really is use now
## we move the base system there so we can work on the rest of the disk
##
apt-get install lvm2
swapoff -a
pvcreate /dev/md0
vgcreate vgsys03 /dev/md0
lvcreate vgsys03 -n lv01root -L +2GB
lvcreate vgsys03 -n lv02boot -L +1GB
mkfs -t ext4 /dev/vgsys03/lv01root
mkfs -t ext4 /dev/vgsys03/lv02boot
mkdir /mnt/root
mount /dev/vgsys03/lv01root /mnt/root
mkdir /mnt/boot
mount /dev/vgsys03/lv02boot /mnt/boot
rsync -v -l -H -p -o -g -D -t -r -S -e ssh --delete --numeric-ids --stats . /mnt/root --exclude "/dev/*" --exclude "/boot/*" --exclude "/home/*" --exclude "/proc/*" --exclude "/sys/*" --exclude "/mnt/*"
rsync -v -l -H -p -o -g -D -t -r -S -e ssh --delete --numeric-ids --stats "/boot/" /mnt/root/boot/
umount /mnt/boot
mount /dev/vgsys03/lv02boot /mnt/root/boot
mount -o bind /dev /mnt/root/dev
mount -t proc /proc /mnt/root/proc
chroot /mnt/root
grub-install /dev/sda
grub-install /dev/sdb
update-grub
less /boot/grub/grub.cfg
vi /mnt/root/etc/fstab
proc /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
/dev/md/0 none swap sw 0 0
/dev/md/1 /boot ext3 defaults 0 0
/dev/md/2 / ext4 defaults 0 0
/dev/md/3 /home ext4 defaults 0 0
->
proc /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
#/dev/md/0 none swap sw 0 0
/dev/vgsys03/lv02boot /boot ext4 defaults 0 0
/dev/vgsys03/lv01root / ext4 defaults 0 0
#/dev/md/3 /home ext4 defaults 0 0
exit # chroot
reboot
## /usr and /var are copie to their own volumes
lvcreate vgsys03 -n lv02var -L +2G
lvcreate vgsys03 -n lv03usr -L +2G
lvcreate vgsys03 -n lv04home -L +2G
mkfs -t ext4 /dev/vgsys03/lv02var
mkfs -t ext4 /dev/vgsys03/lv03usr
mkfs -t ext4 /dev/vgsys03/lv04home
vi /etc/fstab
/dev/vgsys03/lv04home /home ext4 defaults 0 0
mount /home
mount /dev/vgsys03/lv02var /mnt
rsync -v -l -H -p -o -g -D -t -r -S --delete --numeric-ids --stats "/var/" "/mnt/"
umount /mnt
vi /etc/fstab
/dev/vgsys03/lv02var /var ext4 defaults 0 0
mount /var
mount /dev/vgsys03/lv03usr /mnt
rsync -v -l -H -p -o -g -D -t -r -S --delete --numeric-ids --stats "/usr/" "/mnt/"
umount /mnt
vi /etc/fstab
/dev/vgsys03/lv03usr /usr ext4 defaults 0 0
mount /usr
# trick: the file system contents existing so far in /usr and /var on the root fs are now spurious
# using a 2nd mount on the root fs makes them accessible for deletion
# dort geloescht werden
mount /dev/mapper/vgsys03-lv01root /mnt
rm -rf /mnt/var/* /mnt/usr/*
umount /mnt
##
## repartitioning
##
mdadm --stop /dev/md3
mdadm --stop /dev/md2
mdadm --stop /dev/md1
## sda
parted /dev/sda
rm 4
rm 3
rm 2
Number Start End Size File system Name Flags
5 1049kB 2097kB 1049kB bios_grub
1 2097kB 12.9GB 12.9GB raid
2 12.9GB 13.4GB 537MB raid
3 13.4GB 1113GB 1100GB raid
4 1113GB 3001GB 1888GB raid
mkpart " " 12.9GB 1TB
mkpart " " 1TB 2TB
mkpart " " 2TB 3TB
toggle 2 raid
toggle 3 raid
toggle 4 raid
p
Number Start End Size File system Name Flags
5 1049kB 2097kB 1049kB bios_grub
1 2097kB 12.9GB 12.9GB raid
2 12.9GB 1000GB 987GB raid
3 1000GB 2000GB 1000GB raid
4 2000GB 3001GB 1001GB raid
q
## sdb
parted /dev/sdb
rm 4
rm 3
rm 2
mkpart " " 12.9GB 1TB
mkpart " " 1TB 2TB
mkpart " " 2TB 3TB
toggle 2 raid
toggle 3 raid
toggle 4 raid
p
Number Start End Size File system Name Flags
5 1049kB 2097kB 1049kB bios_grub
1 2097kB 12.9GB 12.9GB raid
2 12.9GB 1000GB 987GB raid
3 1000GB 2000GB 1000GB raid
4 2000GB 3001GB 1001GB raid
## raid re-assemble
mdadm --create /dev/md1 -l 1 -n 2 --add /dev/sda2 --add /dev/sdb2
mdadm --create /dev/md2 -l 1 -n 2 --add /dev/sda3 --add /dev/sdb3
mdadm --create /dev/md3 -l 1 -n 2 --add /dev/sda4 --add /dev/sdb4
mdadm --assemble /dev/md1
mdadm --assemble /dev/md2
mdadm --assemble /dev/md3
mdadm --run /dev/md1
mdadm --run /dev/md2
mdadm --run /dev/md3
## vg resize
##
pvcreate /dev/md1
pvcreate /dev/md2
pvcreate /dev/md3
# just md1, the vg does not need to be any larger for now
vgextend vgsys03 /dev/md1
## recreate swap
##
lvcreate vgsys03 -n lv05swap -L +16G
mkswap -L SWAP01 /dev/vgsys03/lv05swap
vi /etc/fstab
/dev/vgsys03/lv05swap none swap sw 0 0
swapon -a
# finally
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/vgsys03-lv01root
2064208 199392 1759960 11% /
tmpfs 8080436 0 8080436 0% /lib/init/rw
udev 8074924 184 8074740 1% /dev
tmpfs 8080436 0 8080436 0% /dev/shm
/dev/vgsys03/lv02boot 1032088 55200 924460 6% /boot
/dev/vgsys03/lv04home 2064208 68608 1890744 4% /home
/dev/vgsys03/lv02var 2064208 219072 1740280 12% /var
/dev/vgsys03/lv03usr 2064208 318912 1640440 17% /usr
Model: ATA ST3000DM001-9YN1 (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Number Start End Size File system Name Flags
5 1049kB 2097kB 1049kB bios_grub
1 2097kB 12.9GB 12.9GB raid
2 12.9GB 1000GB 987GB raid
3 1000GB 2000GB 1000GB raid
4 2000GB 3001GB 1001GB raid
VG #PV #LV #SN Attr VSize VFree
vgsys03 2 6 0 wz--n- 931.31g 906.31g
friedhof/sys03/filesystem.txt · Zuletzt geändert: von 127.0.0.1