On Thu, Jun 13, 2013 at 04:35:55PM -0500, Eric Sandeen wrote: > On 6/13/13 2:45 PM, Autif Khan wrote: > > On Thu, Jun 13, 2013 at 2:55 PM, Autif Khan <autif.mlist@xxxxxxxxx> wrote: > >> Hi, > >> > >> We are using /dev/disk/by-label/OURLABEL to mount USB disk partitions. > >> > >> We were using Ubuntu 12.04 with 1.42 version of e2fsprogs - where we > >> encountered SSD corruption issues on unclean powerdown. It was > >> suggested that we upgrade to the latest e2fsprogs > >> (http://marc.info/?l=linux-ext4&m=137035378614543&w=2). > >> > >> After the upgrade to 1.42.7, we do not have /dev/disk/by-label > >> > >> I am not sure if this is the right place to ask this - but I thought > >> that I should start here and ask in udev mailing list later - (that > >> whole thing about correlation mumble causation). > >> > >> I am still researching how /dev/disk/by-label comes into existence - > >> please advice if there is something obvious that I am missing. > >> > > > > Thanks djwong#ext4 for all the help on IRC > > > > It seems like blkid -o udev /dev/sdb1 displays info about the volume - > > which is used by udev rules to populates /dev/disk/by-label > > > > The output when e2fsprogs version 1.42 was used: > > > > ubuntu@mac0013950af6fb:/lib/udev/rules.d$ sudo blkid -o udev -p /dev/sdb1 > > ubuntu isn't using blkid from util-linux? > > That's really where it's maintained these days, a little surprised that > blkid's still in use from e2fsprogs, though I don't know my ubuntu > releases. Maybe this is Crufty Crow? ;) > > Fedora has been building w/ --disable-libblkid for quite a while, > just FWIW. <shrug> /me runs Ubutnu 12.04 w/ e2fsprogs 1.42.7 (by stealing the 1.42.5 package and mashing 1.42.7 into it, muahahha) and it works fine for me: $ which blkid /sbin/blkid $ sudo /sbin/blkid -o udev -p /dev/sdb2 ID_FS_LABEL=blackbox-boot ID_FS_LABEL_ENC=blackbox-boot ID_FS_UUID=c5487a72-cb84-4ed9-b44c-50850fba11dd ID_FS_UUID_ENC=c5487a72-cb84-4ed9-b44c-50850fba11dd ID_FS_VERSION=1.0 ID_FS_TYPE=ext4 ID_FS_USAGE=filesystem ID_PART_ENTRY_SCHEME=gpt ID_PART_ENTRY_UUID=55b7a0e7-5135-4e34-b8a0-2371e580e926 ID_PART_ENTRY_TYPE=0fc63daf-8483-4772-8e79-3d69d8477de4 ID_PART_ENTRY_NUMBER=2 ID_PART_ENTRY_OFFSET=133120 ID_PART_ENTRY_SIZE=524288 ID_PART_ENTRY_DISK=8:16 --D > > -Eric > > > ID_FS_LABEL=KOKO > > ID_FS_LABEL_ENC=KOKO > > ID_FS_UUID=56D8-F5EE > > ID_FS_UUID_ENC=56D8-F5EE > > ID_FS_VERSION=FAT32 > > ID_FS_TYPE=vfat > > ID_FS_USAGE=filesystem > > ID_PART_ENTRY_SCHEME=dos > > ID_PART_ENTRY_TYPE=0xb > > ID_PART_ENTRY_FLAGS=0x80 > > ID_PART_ENTRY_NUMBER=1 > > ID_PART_ENTRY_OFFSET=32 > > ID_PART_ENTRY_SIZE=251616 > > ID_PART_ENTRY_DISK=8:16 > > > > > > The output when e2fsprogs version 1.42.7 was used: > > ubuntu@mac001395089897:~$ sudo blkid -o udev /dev/sda1 > > Invalid output format udev. Choose from value, > > device, list, or full > > > > BTW, sudo blkid -o full /dev/sdb1 worked just fine - had the LABEL and > > everything. > > > > Also - looks like 1.42.7 does not support the -p option. From the man page: > > > > -p Switch to low-level superblock probing mode (bypass cache). > > > > Is there a configuration option that will allow blkid to display udev > > output formats? I could not find with ./configure --help > > > > Thanks > > > > Autif > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
