Hallo, Hugo,
Du meintest am 03.01.13:
>> On my system (a bundle of /dev/sdb, /dev/sdc, /dev/sdd)
>>
>> btrfs fi label /dev/sdb mylabel
>>
>> only sets the label on the (unmounted) device /dev/sdb. "/dev/sdc"
>> and "/dev/sdd" remain without label.
> This is a bug.
Hmmm - I'll test it on another system.
>> Strange - in another way.
>>
>> Here "blkid" (without any device) hangs. See the attachment ("strace
>> blkid").
> [snip]
>> stat64("/dev/fd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(2, 0),
>> ...}) = 0 open("/dev/fd0", O_RDONLY|O_LARGEFILE) = 4
>> fadvise64_64(4, 0, 0, POSIX_FADV_RANDOM) = 0
>> fstat64(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(2, 0), ...}) = 0
>> uname({sys="Linux", node="izar", ...}) = 0
>> ioctl(4, BLKGETSIZE64, 0x8050d5c) = 0
>> _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, 0x80517a4, 1024) = -1 EIO (Input/output
>> error) _llseek(4, 0, [0], SEEK_SET) = 0
>> read(4, <unfinished ...>
> This is waiting for /dev/fd0 to return some data. I guess it'll
> give up after a few times round (8? 10?) and return some results.
I've waited 10 minutes ...
I know a similar behaviour p.e. when I run
btrfs-show
Then btrfs seems to test all block devices in "/dev" (no "udev" system)
and then tells most times
failed to read /dev/<nonexistent device>: No such device or address
But those (unnecessary) messages come quick, with only some seconds
delay.
-----------------
The above log file comes from a machine without floppy disk (a laptop).
Running "blkid" on an elder tower (with installed and usable floppy
disk) also checks for "/dev/fd0" and then tells "ok".
Tomorrow I'll test this behaviour on another laptop. Could be a "blkid"
error.
Viele Gruesse!
Helmut
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