Am Montag, 7. November 2011 schrieb dima: > Hello, Hi Dima, > Is there any possibility to remount a compressed btrfs without any > compression at all? > > Syslinux bootloader does not understand any btrfs compression and > whenever I edit syslinux.cfg on my compressed / subvolume, the file > becomes compressed and thus unreadable by syslinux on the next boot. > > I tried to remount / without the 'compress' option (and edit > syslinux.cfg in uncompressed state) and while the "mount" command would > not show compression any more, I can see in the /proc/mounts that > compression is still there and the file still gets compressed after > editing. But there seem to be no mount option like compress=none or > something. > > The only workaround I found is to boot from a live CD mount / without > any compression and re-save syslinux.cfg. Then it the file gets > uncompressed. > > Are there any other options except for this workaround to temporarily > remount btrfs without compression? What does lsattr show on the file? Have you tried chattr -c on the file? It might help to do a btrfs filesystem defrag on the file to remove compression, cause I don´t think chattr -c itself will uncompress it. As far as I understand it is possible to individually set compression on/off on single files. Although the global thing should work as well IMHO as least when the file is rewritten. Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
