-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 6/18/2013 2:03 PM, David Zeuthen wrote: > When I was younger I used to think things like this was a good > idea and, in fact, did a lot of work to add complex interfaces for > this in the various components you mention. These interfaces didn't > really work well, someone would always complain that this or that > edge-case didn't work. Or some other desktop environment ended up > not using the interfaces. Or some kernel hacker running twm (with > "carefully" selected bits of GNOME or KDE to get automounting) ran > into problems. It was awful. Just awful. I can't really extract any meaning from this without knowledge of what was tried and what problems it caused. I also don't see why it can't be something as simple as opening the device with O_EXCL. > What _did_ turn out to work really well - and what GNOME is using > today and have been for the last couple of years - is that the > should_automount flag [1] is set only if, and only if, the device > the volume is on, has been added within the last five seconds [2]. > It's incredibly simple (and low-tech). And judging from bug > reports, it works really well. I don't follow. You mean udisks delays auto mounting by 5 seconds? That's not going to help if, for instance, you use gparted to move a partition to the right. It first enlarges the partition, which generates a remove/add event, then starts moving data. 5 seconds later udisks tries to mount the partition, which very well may succeed with horrible consequences. The problem also goes beyond udisks and auto mounting, which is why I say it really needs done either at the udev or kernel level. For instance, a udev script may identify the new volume as part of a raid ( leftover metadata ) and try to attach mdadm to it, at the same time you're running mkfs. I'm also pretty sure that I have seen the mdadm udev script race with mdadm itself while you are trying to create a new raid volume. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJRwKm1AAoJEJrBOlT6nu75ZqMIAM/EUrDIQQn6O5dlCMAOwGSm h/D5Pbb6amPmDiFELooQgb+BMuUw9bAYwdcukMWZB1MqBTMBOtwLGTeI9TEeWH4y y2c753e2JBgkPnzY6iFkfPXDvsTEIZSHsx00YLZt06aDL5k/Fmt5eN+mD5pSiC2T l1qSdhtEw2IseWVuXOjwjy5K00vIDDAaLG1o2Ff135gNx/wUaOK8nL0vSUZhDK96 V3WS4LGKJDlrGESeAyDELfuExrvtmASgohlpUEy2IK9R9lpNicudStPDZFp+dzCA wv/D1HXkZiIRS74u6Nl3BLtWWd9rPF0ub2OXKCwURYXl2ULE7bPwaiJIdtYp/zo= =BWbx -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
