I have a btrfs filesystem mounted with "compress=lzo" now. I''d like to see how much space would I save by converting it to zlib. Would it be possible to convert lzo compression to zlib compression with the following: - mount the filesystem with "compress=zlib" - run balance - when balance finishes, the data would be compressed with zlib Would this work as above, or do I have to copy the data out and back to convert from lzo compression to zlib compression? -- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Jun 17, 2013 at 02:16:53AM +0900, Tomasz Chmielewski wrote:> I have a btrfs filesystem mounted with "compress=lzo" now. > > I''d like to see how much space would I save by converting it to zlib. > > > Would it be possible to convert lzo compression to zlib compression > with the following: > > - mount the filesystem with "compress=zlib" > - run balance > - when balance finishes, the data would be compressed with zlib > > Would this work as above, or do I have to copy the data out and back to > convert from lzo compression to zlib compression?Hi, I''m afraid the above won''t work, cause balance is not aware of the compression so that it won''t decompress the data. thanks, liubo> > > -- > Tomasz Chmielewski > http://wpkg.org > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Jun 17, 2013 at 02:16:53AM +0900, Tomasz Chmielewski wrote:> I''d like to see how much space would I save by converting it to zlib. > > Would it be possible to convert lzo compression to zlib compression > with the following: > > - mount the filesystem with "compress=zlib"- run defrag on all desired files with -czlib david -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html