How to extend the file system in Linux when you increase the drive?

Is there a way to extend the file systems ext3 with increasing disk/LUN without rebooting and unmounting?
In Windows it is simple - simply Extend the Volume in diskmgmt.msc. For Linux until I met a crazy statement with the composite volumes (which are not supported by software for RK) using lvextend and solution "pdresize, lvresizre and expand filesystem", but without detailed descriptions of use it failed.
September 26th 19 at 06:14
4 answers
September 26th 19 at 06:16
Solution
The answer is found on the Internet:
unix.stackexchange.com/a/67107

And abrowser wrote a wonderful tool to automate this difficult task:
habrahabr.ru/post/274451
Well, specifically for CentOS with LVM:
habrahabr.ru/post/261755/#comment_8487077 - Donavon.Breitenberg commented on September 26th 19 at 06:19
September 26th 19 at 06:18
To increase possible without unmounting online, if we are talking about increasing it FS:
resize2fs /path/to/device
FS and its extensions. I'm not well versed in the device of the disk subsystem in Linux, but I would like to get more free space on the filesystem after expanding a VMDK in VMware or LUNs on the storage system. - Donavon.Breitenberg commented on September 26th 19 at 06:21
September 26th 19 at 06:20
Manual

To update without a reboot after resizing a virtual disk, you must re-scan the disk (to the new size of the disk). Something like this:
echo 1 > /sys/class/scsi_disk/x:x:x:x/device/rescan

or

echo 1 > /sys/class/block/xxx/device/rescan
September 26th 19 at 06:22
gparted - resize/move
gparted requires a reboot and I would like to use software from the main repositories for RHEL/CentOS. - Donavon.Breitenberg commented on September 26th 19 at 06:25
and if you ReWire section?
supposedly changed the size, and rewired. MB so out - Donavon.Breitenberg commented on September 26th 19 at 06:28

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