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 ?
Cheers
Terry
On 03/26/2012 02:05 PM, 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 ?
Cheers
Terry
Looks like kernel 3.2.9-2.fc16.i686.PAE is ok ...
Cheers
Terry
I filled a bugreport moths ago, but actually I cannot get the id number, maybe later I can try again Il giorno 26/mar/2012 15:05, "Terry Barnaby" terry1@beam.ltd.uk ha scritto:
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 ?
Cheers
Terry
devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
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.
On 03/26/2012 09:20 PM, J. Randall Owens wrote:
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.
Kernel 3.2.10-3.fc16.i686.PAE also appears to be broken. This seems really very nasty, does it apply to other disks or just to USB ones ... I have added Bugzilla bug: 806909 for this.
https://bugzilla.redhat.com/show_bug.cgi?id=806909
Cheers
Terry
2012/3/28 Terry Barnaby terry1@beam.ltd.uk
On 03/26/2012 09:20 PM, J. Randall Owens wrote:
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.
Kernel 3.2.10-3.fc16.i686.PAE also appears to be broken. This seems really very nasty, does it apply to other disks or just to USB ones ... I have added Bugzilla bug: 806909 for this.
https://bugzilla.redhat.com/show_bug.cgi?id=806909
Cheers
Terry
devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
I just commented your bugreport with mine that submitted some months ago
On 03/28/2012 12:31 PM, Caterpillar wrote:
2012/3/28 Terry Barnaby <terry1@beam.ltd.uk mailto:terry1@beam.ltd.uk>
On 03/26/2012 09:20 PM, J. Randall Owens wrote: > 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. > Kernel 3.2.10-3.fc16.i686.PAE also appears to be broken. This seems really very nasty, does it apply to other disks or just to USB ones ... I have added Bugzilla bug: 806909 for this. https://bugzilla.redhat.com/show_bug.cgi?id=806909 Cheers Terry -- devel mailing list devel@lists.fedoraproject.org <mailto:devel@lists.fedoraproject.org> https://admin.fedoraproject.org/mailman/listinfo/develI just commented your bugreport with mine that submitted some months ago
For people following this, it appears that if the cups printer daemon is running then umount fails on USB disks.
How on earth the cups daemon can affect disk data storage unmounts is baffling to me. Data storage is sacrosanct, how can the Linux kernel allow this to happen ?
Cheers
Terry
On 03/29/2012 10:44 AM, Terry Barnaby wrote:
On 03/28/2012 12:31 PM, Caterpillar wrote:
2012/3/28 Terry Barnaby <terry1@beam.ltd.uk mailto:terry1@beam.ltd.uk>
On 03/26/2012 09:20 PM, J. Randall Owens wrote: > 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. > Kernel 3.2.10-3.fc16.i686.PAE also appears to be broken. This seems really very nasty, does it apply to other disks or just to USB ones ... I have added Bugzilla bug: 806909 for this. https://bugzilla.redhat.com/show_bug.cgi?id=806909 Cheers Terry -- devel mailing list devel@lists.fedoraproject.org <mailto:devel@lists.fedoraproject.org> https://admin.fedoraproject.org/mailman/listinfo/develI just commented your bugreport with mine that submitted some months ago
For people following this, it appears that if the cups printer daemon is running then umount fails on USB disks.
How on earth the cups daemon can affect disk data storage unmounts is baffling to me. Data storage is sacrosanct, how can the Linux kernel allow this to happen ?
Cheers
Terry
Just a warning to all, this bug is still present. If the cupsd is running and you "umount" a USB disk, then the disk will not be properly unmounted and any written data will not have been synced. A pretty major bug that is still there ...
On Thu, 2012-04-26 at 14:56 +0100, Terry Barnaby wrote:
Just a warning to all, this bug is still present. If the cupsd is running and you "umount" a USB disk, then the disk will not be properly unmounted and any written data will not have been synced. A pretty major bug that is still there ...
Uh, are you sure? https://bugzilla.redhat.com/show_bug.cgi?id=808109 is still open, but the cups part of the issue appears to have been resolved by cups-1.5.2-8.1.fc16 .
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Adam Williamson -
Caterpillar -
J. Randall Owens -
Terry Barnaby