On 03/26/2012 06:05 AM, Terry Barnaby wrote: > Hi, > > I am using the latest F16 kernel: 3.3.0-4.fc16.i686.PAE and am having > problems with a MicroSD card connected to a USB card reader. This has > been working fine until recently (at least in F14 on the same hardware). > > The problem is that "umount" does not appear to be working correctly. > I have an ext3 file system on the card. I can mount it, and I can copy > files to it. However when I use the "umount ..." command it returns > instantly (should sync the files to the card). The system says the card > is unmounted (at least it is not listed with mount, df etc). > > However if I run sync, there is a lot of disk activity to the card ... > > Also if I try and run "mkfs" it says the device in in use ... > If I mount a blank card it lists the files present on the previous card ... > > This sounds like a nasty kernel bug ... > Anyone else seen this ?
I thought I'd noticed something like this with 3.2.x kernels also; I couldn't narrow it down more than that. In my case, it's a USB external HDD. After unmounting, I have an old habit of running 3 syncs in one line. And lately, I've noticed that I don't even get that disk activity until I give it a second trio of syncs, which certainly doesn't seem right. Let me check right now with 3.3.0-4... Odd, now I do get the activity at about the same time as the umount, and no further activity when I issue the syncs. Seems to be the opposite of what you've reported. -- J. Randall Owens | http://www.ghiapet.net/ -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
