Re: [PATCH 0/6] detect online disk resize

From: Jeff Moyer
Date: Mon Sep 08 2008 - 14:08:25 EST

Andrew Patterson <andrew.patterson@xxxxxx> writes:

> This is version 2 of a patch series I submitted back in May 2008. This
> version now checks for device size changes in the rescan_partitions()
> routine. Which in turn is called when a device is opened and in the
> BLKRRPART ioctl.
> I am resubmitting this patch series as I got little response the
> previous time. Al Viro has told me offline that he would look at it this
> time.


> I have tested this patch on SCSI and SmartArray (cciss)
> devices. Device mapper still does not recognize device size changes
> until the device is restarted.
> Jeff Moyer and Andy Ryan have done some light testing on the previous
> version of this series.

I re-tested this new patch series using an iSCSI target via the
following steps:

1) Connect to iSCSI storage, creating the /dev/sd* devices.
2) Create a file system on the block device
3) Mount the file system, and leave a shell active on the mount point.
4) resize the iSCSI LUN
5) rescan the iSCSI session
6) resize the file system

This procedure worked fine.


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