Messages in this thread | | | Date | Wed, 12 Nov 2008 19:44:07 +0200 | From | Lasse Kärkkäinen <> | Subject | Resizing block devices that are in use |
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Currently the kernel does not seem to resize SCSI devices when rescan is done, if the device is in use (e.g. there's a filesystem mounted on it). Additionally, it also won't resize it if rescan (changing size in hardware) is done first while mounted and then the device is unmounted, even if rescan is attempted again.
Steps to reproduce: 1. mount a filesystem on a SCSI device 2. resize the disk (e.g. grow hardware RAID array) 3. echo 1 > "/sys/bus/scsi/devices/0:0:1:0" 4. unmount the filesystem 5. echo 1 > "/sys/bus/scsi/devices/0:0:1:0" again 6. the size of the device (e.g. /dev/sdb) still hasn't changed
A preferrable solution (to me) would be to resize the device as soon as rescan is done, no matter if it is in use or not. It will fix the bug and the "feature" both at the same time.
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