blkid recognizes my swap partition as XFS:
# swapon -s
Filename Type Size Used Priority
/dev/sda8 partition 4883720 0 -1
# blkid /dev/sda8
/dev/sda8: UUID="a3480339-b89c-4a01-ac2a-e3fe3347b99b" TYPE="xfs"
strace shows:
open("/dev/sda8", O_RDONLY) = 3
fstat(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 8), ...}) = 0
uname({sys="Linux", node="Anastacia", ...}) = 0
ioctl(3, BLKGETSIZE64, 0x126e400) = 0
lseek(3, 0, SEEK_SET) = 0
read(3, "XFSB\0\0\20\0\0\0\0\0\0\n\202\210\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0
\0"..., 69632) = 69632
Now It's very likely that this partition was orginally an XFS partition,
which I reformatted later on with mkswap.
IIRC XFS uses the first sector differently than other file systems
(installing a boot loader in the first sector of an XFS partition will
destroy the file system, unlike with other file systems).
Could it be that mkswap does not overwrite the first sector, and then
blkid fails to take into account that the first sector might still have
a reference to XFS, while the partition is actually used for something
else now?
I'm using util-linux-ng 2.16 on Mandriva 2010.0 Cooker x86_64
--
Frederik Himpe <fhimpe@xxxxxxxxxx>
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