limit of size for a lvol vxfs

[Alberto Hurtado]

i have a f.s. of this size and i am planning extends 40 Gb more. somebody know if are there a limit of size for one logical volume or if i could have a problem of administration ?

this is the bdf...
Filesystem kbytes used avail %used Mounted on
/dev/vg05/lvol1 96628736 95155464 1461768 98% /archived

Thanks a lot to all

[DIPAK KUMAR ROY]

You can go upto 255 GB.

Thanks

[Massimo Bianchi · Accepted solution]

Apart from support tables, they exists but i do not rememeber where, up to 200Gb on a HPUX 11.00 you are fine, i have dozens on them on a customer.

Massimo

[Alberto Hurtado]

i have a server v2250 with HPUX 11.00

[Helen French]

If properly patched, the implementation limit (for your system 11.00) on size for a single logical volume (and thus file system)is 16777216 MB (~16TB).

# man lvcreate

[Alberto Hurtado]

great, UNIX o HPUX it's amazing.... i am proceed to extend 40 gb just that i need it. But iam looking for patch of LVM on 11.00

Thanks dear friends and masters.

[Helen French]

Do a custom patch analysis on your system and download the latest patches available for your system. You can do this with ITRC custom patch analysis:

http://www1.itrc.hp.com/service/patch/assessSystemsPage.do

[Jeff Schussele]

Hi Shiju,

Are you sure on that 16TB limit?
A properly patched 11.0 with JFS 3.3ver4 is only 1TB. For 11i JFS3.3ver 4 limit would be 2 TB.

Alberto - see the following link:

http://docs.hp.com/hpux/onlinedocs/5971-2383/5971-2383.html

HTH,
Jeff

[Jeff Schussele]

OK - let me explain further.
Although the LV limit is 16TB, the filesystem & therefore file size limit IS 1TB for 11.0 & 2TB for 11.11 (11iv1).

Rgds,
Jeff

[Helen French]

Jeff, I think you are right about the 2TB/1TB vxfs file system limitation on 11i/11.00 OS. 16TB is the theoratical value given on the man pages for LVs(lvcreate) and not proved on the Labs. The vxfs version 5 man pages (mkfs_vxfs) says it can support up to 32TB of file system size! But in practical, the version 5 (vxfs) supports only 4TB file system and 2TB file size max.

Man pages does create some confusion some times, but as I said in my original post, it's the *implementation limit* ! =))

[Fabio Ettore]

Hi,

I think that Jeff is right!
The biggest size for a vxfs filesystem is 1 TB for 11.00 and 2 TB for 11.11 even if lvol can be 16 TB.
Also even if it is possible to get a bigger size it is not advisable because they could have unpredictable consequences.

Best regards,
Ettore

[Alberto Hurtado]

wawww truely the level of expertize that you have is surprising.

I have a question about... i have a box of XP-256 and XP-512 with luns of 7,14,21 Gb, are there a limit of disk per logicalvolume ?

[Jeff Schussele]

Hi (again) Alberto,

The limit is at the VG level & it's 255 physical volumes - that's either seperate disks or LUNs.
It's set at creation time with the -p parameter & if not supplied at creation time it defaults to 16.

Rgds,
Jeff

[Helen French]

The implementation limitation of size of a LV is 16TB (theory) now. But since you can have only up to 1TB of file system (vxfs 3.X) or 4TB (vxfs 5, but you need to use Veritas Volume manager to create the LV and in 11i)), it's useless.

Did you mean disk size limitation in Volume group (67735 * 256 = 16TB)? Or Number of disk limitation disk in VG (255)? You can read all those information from here:
# man vgcreate
# man lvcreate

[Alberto Hurtado]

you are very nice
Thanks Jeff
Thanks Shijtsu