lkml.org 
[lkml]   [2011]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: Linux 2.6.39-rc3
    Date
    On Tue, 19 Apr 2011 00:57:27 +0200, Kay Sievers <kay.sievers@vrfy.org> wrote:
    > On Thu, Apr 14, 2011 at 10:20, Aneesh Kumar K.V
    > <aneesh.kumar@linux.vnet.ibm.com> wrote:
    > > On Tue, 12 Apr 2011 15:21:03 -0400, Dave Jones <davej@redhat.com> wrote:
    > >> On Tue, Apr 12, 2011 at 03:09:34PM -0400, Dave Jones wrote:
    > >>
    > >>  > however, the output of mount looks very confused..
    > >>  >
    > >>  > .38:
    > >>  > /dev/mapper/vg_adamo-lv_home on /home type ext4 (rw,relatime,seclabel,barrier=1,data=ordered)
    > >>  >
    > >>  > .39:
    > >>  > - on /home type 79a9-4526-888c-1f86d35a6704 (rw,relatime,ext4)
    > >>  >
    > >>  > It looks like /proc/self/mountinfo broke abi.
    > >>  >
    > >>  > .38:
    > >>  > 48 45 253:3 / /home rw,relatime - ext4 /dev/mapper/vg_adamo-lv_home rw,seclabel,barrier=1,data=ordered
    > >>  >
    > >>  > .39:
    > >>  > 46 22 253:3 / /home rw,relatime uuid:f3971858-79a9-4526-888c-1f86d35a6704 - ext4 /dev/mapper/vg_adamo-lv_home rw,seclabel,user_xattr,barrier=1,data=ordered
    > >>
    > >> looks like this was caused by 93f1c20bc8cdb757be50566eff88d65c3b26881f
    > >>
    > >> perhaps adding that string to the end of the line would preserve what mount expects ?
    > >
    > > uuid:<value> is the option field  as per
    > > Documentation/filesystem/proc.txt. There was an error in libmount
    > > parsing which got fixed upstream recently
    >
    > Just a simple question about this approach in general? A filesystem
    > UUID can be changed on disk at any time (tune2fs -U ...).
    >
    > Your code looks like you copy the bytes to the in-kernel superblock
    > structure without noticing any later changes on disk? How is that
    > supposed to work?
    >

    Isn't that true even for the fsid returned by statfs ?. IIUC tune2fs
    won't change even the ext4_super_block.s_uuid .

    -aneesh
    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2011-04-19 10:27    [W:4.091 / U:0.368 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site