Messages in this thread | | | Date | Wed, 19 Nov 2008 11:07:09 +0900 | From | "Akinobu Mita" <> | Subject | Re: [PATCH] loop file resizable |
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2008/11/19 Andrew Morton <akpm@linux-foundation.org>: > On Mon, 17 Nov 2008 08:44:28 +0100 > Tomas M <tomas@slax.org> wrote: > >> The following patch against loop.c adds ability to 'resize' the loop device on the fly. >> This may be practically very useful. >> >> One practical application is a loop file with XFS filesystem, already mounted: >> You can easily enlarge the file (append some bytes) and then call >> ioctl(fd, LOOP_SET_CAPACITY, new); >> The loop driver will learn about the new size and you can use xfs_growfs >> later on, which will allow you to use full capacity of the loop >> file without the need to unmount. >> > > Various people have tried this before, if I recall correctly. One was > Akinobu Mita (cc'ed here). > > I don't recall why that patch never was merged?
Yes, I did. http://lkml.org/lkml/2006/5/23/26
There wasn't outstanding problem in that patch. But I didn't send updated patch. Because I was just lazy.
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