Date: Tue, 14 Sep 2021 18:42:26 -0400 (EDT) From: DTD <support@safeport.com> To: Dan Langille <dan@langille.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: zfs newbie Message-ID: <alpine.BSF.2.00.2109141838150.65923@bucksport.safeport.com> In-Reply-To: <2b3bd0c8-204d-2f9b-2d63-cca853f5893c@langille.org> References: <alpine.BSF.2.00.2109071736520.87853@bucksport.safeport.com> <2b3bd0c8-204d-2f9b-2d63-cca853f5893c@langille.org>
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On Tue, 14 Sep 2021, Dan Langille wrote:
> DTD wrote on 9/7/21 5:51 PM:
>> Following the default 12.2 zfs install I got one pool (zroot) and a dataset
>> for each of the traditional mount points. So zfs list shows:
>>
>> NAME USED AVAIL REFER MOUNTPOINT
>> zroot 279G 6.75T 88K /zroot
>> zroot/ROOT 1.74G 6.75T 88K none
>> zroot/ROOT/default 1.74G 6.75T 1.74G /
>> zroot/tmp 176K 6.75T 176K /tmp
>> zroot/usr 277G 6.75T 88K /usr
>> zroot/usr/home 276G 6.75T 276G /usr/home
>> zroot/usr/ports 88K 6.75T 88K /usr/ports
>> zroot/usr/src 670M 6.75T 670M /usr/src
>> zroot/var 47.5M 6.75T 88K /var
>> zroot/var/audit 88K 6.75T 88K /var/audit
>> zroot/var/crash 88K 6.75T 88K /var/crash
>> zroot/var/log 820K 6.75T 820K /var/log
>> zroot/var/mail 46.3M 6.75T 46.3M /var/mail
>> zroot/var/tmp 88K 6.75T 88K /var/tmp
>>
>> I had consultant configure another service for us. He set up the disk array
>> with one dataset. so zfs list on this system give:
>>
>> NAME USED AVAIL REFER MOUNTPOINT
>> zroot 2.65G 13.2T 2.62G legacy
>>
>> From a sysadmin view I rather like the multiple datasets. Are there
>> advantages to one over the other?
>
> I see no advantages to me in the single dataset.
>
> What do you see from zpool status? I'm wondering if this is not directly on
> hardware, such as a VM under VMware.
>
Nop, no VM. I have three system that I did a take all options zfs install
on. I do not remember which one I posted so here is a matching set:
> freebsd-version
12.1-RELEASE-p8
> zfs list
NAME USED AVAIL REFER MOUNTPOINT
zroot 90.6G 801G 88K /zroot
zroot/ROOT 89.9G 801G 88K none
zroot/ROOT/default 89.9G 801G 89.9G /
zroot/tmp 156K 801G 156K /tmp
zroot/usr 723M 801G 88K /usr
zroot/usr/home 18.7M 801G 18.7M /usr/home
zroot/usr/ports 88K 801G 88K /usr/ports
zroot/usr/src 704M 801G 704M /usr/src
zroot/var 21.7M 801G 88K /var
zroot/var/audit 88K 801G 88K /var/audit
zroot/var/crash 88K 801G 88K /var/crash
zroot/var/log 21.3M 801G 21.3M /var/log
zroot/var/mail 88K 801G 88K /var/mail
zroot/var/tmp 88K 801G 88K /var/tmp
> zpool status
pool: zroot
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
zroot ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ada0p3 ONLINE 0 0 0
ada1p3 ONLINE 0 0 0
errors: No known data errors
_____
Douglas Denault
http://www.safeport.com
support@safeport.com
Voice: 301-217-9220
Fax: 301-217-9277
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Subject: Migration of data LVMs in Old SAN box to New SAN box
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Hi all,
I am in need of migrating the data in an old SAN Box (hitachi) to a new
SAN box ( EMC) .
There are LVMs in the old SAN box around 6 TB capacity its AMC is getting
over soon, So in need to migrate all the data in the old SAN to New SAN box.
What steps do I need to perform in the new SAN box ( its a fresh box no
volumes structures created as of now.)
1.What all are the steps on New SAN Box
2. What all are the step on Old SAN box need to perform to copy the data in
LVMs ( and my Virtual machines are running live from the old SAN) .
so that minimal down time and error free migratin need to assure.
3. As I am going to perform this first time, kindly share your experience
so that I can perform it successfully.
Kindly guide me
Kris
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