Busk at 19:04, 7 November 2020

2020-11-07T19:04:32Z

Busk at 19:04, 7 November 2020

2020-11-07T19:04:09Z

Busk: Created page with "# Controlling Disk With Linux # linux disk hot-swapping take a disk offline: ``` echo offline > /sys/block/sda/device/state ``` put a disk online: ``` echo running > /sys/..."

2019-08-26T17:39:08Z

Created page with "# Controlling Disk With Linux # linux disk hot-swapping take a disk offline: ``` echo offline > /sys/block/sda/device/state ``` put a disk online: ``` echo running > /sys/..."

New page

# Controlling Disk With Linux

# linux disk hot-swapping

take a disk offline:
```
echo offline > /sys/block/sda/device/state
```

put a disk online:
```
echo running > /sys/block/sda/device/state
```

delete a disk before unplugging:
```
echo 1 > sys/block/sda/device/delete
```
scan for new hotplugged disks:
```
echo "0 0 0" > /sys/class/scsi_host/host/scan
```

display the controller IDs:
```
omreport storage controller
```

display the IDs for the physical disks attached to the controller:
```
omreport storage pdisk controller=0
```

displays property information for all virtual disks on all controllers
```
omreport storage vdisk
```

make sure that I’m dealing with the proper disks:
```
omconfig storage pdisk action=blink controller=0 pdisk=0:0:2
omconfig storage pdisk action=unblink controller=0 pdisk=0:0:2
omconfig storage pdisk action=blink controller=0 pdisk=0:0:3
omconfig storage pdisk action=unblink controller=0 pdisk=0:0:3
clear the configuration:
omconfig storage controller action=clearforeignconfig controller=0
```

check for the new virtual disk:
```
omreport storage vdisk
```

initialize a disk:
```
omconfig storage vdisk action=fastinit controller=0 vdisk=id
```

how to replace a disk on a dell server with several disks in a jbod configuration
```
umount /dev/sdg1
echo offline > /sys/block/sdg/device/state
echo 1 > sys/block/sdg/device/delete
```

install replacement disk, then:
```
echo "0 0 0" > /sys/class/scsi_host/host/scan
#
# WARNING!! WARNING!! Danger Will Robinson!!
# verify that the disk is the same device
#
fdisk -l /dev/sdg
#
echo running > /sys/block/sdg/device/state
parted /dev/sdg
mkfs.ext3 -m0 -L /disk6 /dev/sdg1
tune2fs -i0 -c0 /dev/sdg1
mount /dev/sdg1

fdisk /dev/sdg
>>> Command (m for help): n (create new partition)
>>> Partition number (1-4): 1
>>> Command (m for help): p (create primary partition)
>>> Command (m for help): w (Write and save partition table)
mkfs.ext3 -L disk2 -m 0 /dev/sdg1
tune2fs -c 0 -i 0 /dev/sdg1
cat >>/etc/fstab <<EOM
LABEL=disk2 /disk2 ext3 defaults 1 2
EOM
mkdir /disk2
mount -L disk2
```

@@ Line 16: / Line 16: @@
 delete a disk before unplugging:
 ```
-echo 1 > sys/block/sda/device/delete
+echo 1 > /sys/block/sda/device/delete
 ```
 scan for new hotplugged disks:

@@ Line 92: / Line 92: @@
 mkdir /disk2
 mount -L disk2
 ```

Disk Control - Revision history

Busk at 19:04, 7 November 2020

Busk at 19:04, 7 November 2020

Busk: Created page with "# Controlling Disk With Linux # linux disk hot-swapping take a disk offline: ``` echo offline > /sys/block/sda/device/state ``` put a disk online: ``` echo running > /sys/..."