df, lvm and 6TB arrays oh my!
Mark Haney
mhaney at ercbroadband.org
Mon Feb 13 21:27:30 UTC 2006
Robert Locke wrote:
> On Mon, 2006-02-13 at 08:22 -0500, Mark Haney wrote:
>
>> Robert Locke wrote:
>>
>>>>
>>>>
>>> OK, so lvdisplay showing the full amount is good, so the underlying
>>> virtual partition is 6.36TB.... Now the tune2fs I was suggesting was
>>> simply the -l option that would dump the ext2/3 superblock. We should
>>> be able to see the "block count" and the "block size" which when
>>> multiplied should be 6.36TB. Since you are at least on a 2.6 kernel, I
>>> don't think we have the 2TB filesystem limit, though I don't remember
>>> when that got bumped up to 32....
>>>
>>> --Rob
>>>
>>>
>>>
>> I hate to be a complete idiot, but I can't get tune2fs to work on the
>> lv, I must be doing something wrong. Can you use tune2fs on an lvm volume?
>>
>>
>
> <big grin>
>
> Should just be "tune2fs -l /dev/vgname/lvname". So try:
>
> tune2fs -l /dev/Volume02/Volume02lv
> tune2fs -l /dev/Volume03/Volume03lv
>
> That should generate about a page of each....
>
> --Rob
>
>
I just got time to actually figure that out. I'm not a complete
imbecile, I swear. Here's the output of one 6.36TB array:
ilesystem volume name: <none>
Last mounted on: <not available>
Filesystem UUID: d775f424-2a12-44ac-9260-c00013f963ee
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal filetype needs_recovery
sparse_super large_file
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 316325888
Block count: 632648704
Reserved block count: 31632435
Free blocks: 622713507
Free inodes: 316325877
First block: 0
Block size: 4096
Fragment size: 4096
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 16384
Inode blocks per group: 512
Filesystem created: Thu Jan 5 13:41:11 2006
Last mount time: Mon Feb 13 14:06:06 2006
Last write time: Mon Feb 13 14:06:06 2006
Mount count: 2
Maximum mount count: 31
Last checked: Thu Jan 5 13:41:11 2006
Check interval: 15552000 (6 months)
Next check after: Tue Jul 4 14:41:11 2006
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal inode: 8
Default directory hash: tea
Directory Hash Seed: 62d0ad33-5300-481b-8620-bbdb6fd30a5b
Journal backup: inode blocks
--
Interdum feror cupidine partium magnarum Europae vincendarum
Mark Haney
Sr. Systems Administrator
ERC Broadband
(828) 350-2415
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