[zfs-discuss] Rename disk labels in an already running zpool?

Zenny garbytrash at gmail.com
Sat Dec 2 05:21:12 EST 2017


Thanks for the inputs

First, I forgot to mention that the 'ls -la /dev/disk/by-id/' points sde
and sda to other labels, too as follows:

lrwxrwxrwx 1 root root   9 Dec  2 08:08 wwn-0x5000c500a3eaef9e -> ../../sde
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 wwn-0x5000c500a3eaef9e-part1 ->
> ../../sde1
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 wwn-0x5000c500a3eaef9e-part9 ->
> ../../sde9
> lrwxrwxrwx 1 root root   9 Dec  2 08:08 wwn-0x5000c500a3ecb69f -> ../../sda
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 wwn-0x5000c500a3ecb69f-part1 ->
> ../../sda1
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 wwn-0x5000c500a3ecb69f-part9 ->
> ../../sda9
>

lrwxrwxrwx 1 root root   9 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B
> -> ../../sde
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B-part1
> -> ../../sde1
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B-part9
> -> ../../sde9
> lrwxrwxrwx 1 root root   9 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK
> -> ../../sda
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK-part1
> -> ../../sda1
> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK-part9
> -> ../../sda9
>

If I execute after 'zpool export',

# zpool import xtbmr /dev/disk/by-id

which label will be imported between the one starts with ata- or with wwn-?
How can I specify the specific labels beginning with ata-, but NOT wnn-?



Second, what I derive is this is not possible to change labels with rpool
as it gets mounted as soon as the OS gets booted, right?

On Sat, Dec 2, 2017 at 9:45 AM, Gregor Kopka (@zfs-discuss) via zfs-discuss
<zfs-discuss at list.zfsonlinux.org> wrote:

> The question was 'without breaking the zpool' (as in 'damage it/have to
> recreate'), not 'without unmounting it' (the answer for the latter would
> be: not possible).
>
> Gregor
>
>
> Am 02.12.2017 um 09:42 schrieb Gandalf Corvotempesta:
>
> Not if mounted AFAIK...
>
> Il 2 dic 2017 9:41 AM, "Gregor Kopka (@zfs-discuss) via zfs-discuss" <
> zfs-discuss at list.zfsonlinux.org> ha scritto:
>
>> Simple:
>>
>> zpool export xtbmr
>> zpool import xtbmr -d /dev/disk/by-id
>>
>> Gregor
>>
>> Am 02.12.2017 um 08:44 schrieb Zenny via zfs-discuss:
>>
>> Hi,
>>
>> I have a mirror pool with two drives:
>>
>>     NAME                        STATE     READ WRITE CKSUM
>>>     xtbmr                       ONLINE       0     0     0
>>>       mirror-0                  ONLINE       0     0     0
>>>         sde                      ONLINE       0     0     0
>>>         sda                      ONLINE       0     0     0
>>>
>>
>> I want to change the labels derived from disk-id. 'ls -la
>> /dev/disk/by-id' outputs:
>>
>> lrwxrwxrwx 1 root root   9 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B
>>> -> ../../sde
>>> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B-part1
>>> -> ../../sde1
>>> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA22435B-part9
>>> -> ../../sde9
>>> lrwxrwxrwx 1 root root   9 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK
>>> -> ../../sda
>>> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK-part1
>>> -> ../../sda1
>>> lrwxrwxrwx 1 root root  10 Dec  2 08:08 ata-ST10000VN0004-1ZD101_ZA224RJK-part9
>>> -> ../../sda9
>>>
>>>
>> How can I change the disk labeling
>>
>> FROM sde TO ata-ST10000VN0004-1ZD101_ZA22435B
>> FROM sda TO ata-ST10000VN0004-1ZD101_ZA224RJK
>>
>> without breaking the zpool?
>>
>> Inputs appreciated and have a nice weekend!
>>
>> Cheers,
>> /z
>>
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-- 
Cheers,
/z

-.. .. ... -.-. .-.. .- .. -- . .-. | -.. .. ... -.-. .-.. .- .. -- . .-.
CONFIDENTIALITY NOTICE AND DISCLAIMER: Access to this e-mail and its
contents by anyone other than the intended recipient is unauthorized as it
contains privileged and confidential information, and is subject to legal
privilege. Please do not re/distribute it.  If you are not the intended
recipient (or responsible for delivery of the message to such person), you
may not use, copy, distribute or deliver the email and part of its contents
to anyone this message (or any part of its contents or take any action in
connection to it. In such case, you should destroy this message, and notify
the sender immediately. If you have received this email in error, please
notify the sender or your sysadmin immediately by e-mail or telephone, and
delete the e-mail from any computer. If you or your employer does not
consent to internet e-mail messages of this kind, please notify the sender
immediately. All reasonable precautions have been taken to ensure no
viruses are present in this e-mail and attachments included. As the sender
cannot accept responsibility for any loss or damage arising from the use of
this e-mail or attachments it is recommended that you are responsible to
follow your virus checking procedures prior to use. The views, opinions,
conclusions and other informations expressed in this electronic mail are
not given or endorsed by any company including the network providers unless
otherwise indicated by an authorized representative independent of this
message.
-.. .. ... -.-. .-.. .- .. -- . .-. | -.. .. ... -.-. .-.. .- .. -- . .-.


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