-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 devzero@xxxxxx wrote: > Hello ! > > after desparately seeking for a solution to have more than 256 loop > devices (for a huge cd-rom server), i have recently come across > dm-loop, which looks very promising (to replace loop.c) > > can i have more than 256 devices which this? Hi Roland, Yes, dm-loop will support as many loop devices as device-mapper can allow. > our cd-rom server is going to have more than 256 iso-images soon and > i need to upgrade to a more recent OS, anyway, so this won`t be a > problem that dm-loop is so brand new. > > but - any timeline for dm-loop mainline inclusion ? > > should i wait for 2.6.19 or 2.6.20 ? There isn't a fixed timeline. We are currently working to improve the lookup code - the prototype patch uses a linear search which doesn't scale well for large/fragmented image files. I have some tests running at the moment and we hope to have something soon - the results so far are good, it's just a case of selecting between a couple of different methods. The changes dm-loop requires in device-mapper core are pretty minor and have already been merged in 2.6.19, so it's just the dm-loop patch itself remaining. > is it already useable with less recent kernels, i.e. can i download > dm-loop patch and recent dmsetup tool and use with older kernel ? This should work fine - there are a couple of known issues with the existing patch, but unless you are using large images (>2G), or have a severely fragmented filesystem you shouldn't run into these. I'll see if we can get a revised version of the current patch for wider testing in the next couple of weeks - let me know if you would be interested in trying this out. Thanks, Bryn. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFFY2uJ6YSQoMYUY94RArTwAJwMmCJbTajxmX6Q/ps545zbgvJJOACg28NP A+F6CtqcHH0fOG9lq2XQw/8= =CzES -----END PGP SIGNATURE----- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
