Linux File system expansion steps

1 Pre-expansion check

cat/etc/-H

Please confirm the free size of the VG and whether the file and file system is up to the system limit before expanding.

2 System Identification Drive

# echo "---" >/sys/class/scsi_host/hostnumbers/scanHost found in the ls-lrt/sys/class/scsi_host/directory

3 Viewing the aggregation disk for different storage

EMC Storage aggregation path software PowerPath, the aggregated disk name is Emcpower

# powermt config  link aggregation configuration #powermt dispaly dev=all View the status of all power disks #powermt Save saves EMC link status #ls-ltr/dev|grep Power   See if the timestamp has a new disk

IBM Storage Aggregation Path software datapath, the aggregated disk name is dm-*

# cfgpath Use this command to aggregate disks # datapath Query Device # Ls-lrt/dev|grep dm-

IBM XIV Storage

# xiv_devlist View disk status # Ls-ltr/dev|grep dm-

Linux comes with multipath storage aggregation path software, the aggregated disk name is MPath

# multipath-v 2 # Ls-lrt/dev|grep MPath # Multipath-ll ("active/ready" status is Normal,"inactive/faulty " Status for link break)

4 File System expansion

 #  pvcreate/dev/aggregated disk name  #  pvs #检查PV是否创建成功  #  
   
    vgextend vgname/dev/The disk name after aggregation #对VG进行扩容  
    #  
    vgdiplay-v VG name #检查VG是否扩容成功  
    #  
    pvs Check to see if the new disk is expanding to the specified VG  
    #  
    partprobe #更新分区表  
    #  
    lvextend-l +20g/dev/vgname/lvname #扩容lv  
    #  
    resize2fs/dev/vgname/lvname (Redhat 5.5 or later)  
    #  
    ext2online/dev/vgname/lvname (Redhat 4.6 version)  
   

If the system is double-click on the Standby machine:

# Pvscan # PVs

Linux File system expansion steps