** Description changed: trusty has a very old util-linux which does not yet know about /dev /loop-control to create arbitrarily many loop devices. This feature was introduced in Linux 3.1 already (i. e. before precise even). This is a showstopper for backporting snappy as that needs a lot of loop mounts. Support for loop-control got introduced in http://git.kernel.org/cgit/utils/util-linux/util- linux.git/commit/?id=0b14bf7a - SRU TEST CASE: + SRU TEST CASE: (FIXME: this does not actually get fixed with the above commit) First, use up all default 8 loop devices: $ for i in `seq 8`; do echo $i; sudo losetup --find /etc/issue; done Now try to use a 9th: $ sudo mount -o loop /etc/issue /mnt With current trusty's util-linux this will fail with "could not find any free loop device". With the proposed version, this should "only" fail with "you must specify the filesystem type" (or try it on an actual file system image). REGRESSION POTENTIAL: /dev/loop-control and the corresponding util-linux support has exited for a long time without known/major issues, so this should be fairly safe. Also, the patch falls back to the previous "iterate over loop0 to loop7" behaviour if loop-control is not available.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/1640823 Title: [trusty] mount -o loop is limited to 8 loop devices Status in util-linux package in Ubuntu: Fix Released Status in util-linux source package in Trusty: Triaged Bug description: trusty has a very old util-linux which does not yet know about /dev /loop-control to create arbitrarily many loop devices. This feature was introduced in Linux 3.1 already (i. e. before precise even). This is a showstopper for backporting snappy as that needs a lot of loop mounts. Support for loop-control got introduced in http://git.kernel.org/cgit/utils/util-linux/util- linux.git/commit/?id=0b14bf7a SRU TEST CASE: (FIXME: this does not actually get fixed with the above commit) First, use up all default 8 loop devices: $ for i in `seq 8`; do echo $i; sudo losetup --find /etc/issue; done Now try to use a 9th: $ sudo mount -o loop /etc/issue /mnt With current trusty's util-linux this will fail with "could not find any free loop device". With the proposed version, this should "only" fail with "you must specify the filesystem type" (or try it on an actual file system image). REGRESSION POTENTIAL: /dev/loop-control and the corresponding util- linux support has exited for a long time without known/major issues, so this should be fairly safe. Also, the patch falls back to the previous "iterate over loop0 to loop7" behaviour if loop-control is not available. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1640823/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp