[linux-lvm] A problem (probably conceptual) with snapshot
Du
eduardo at minicom.com.br
Thu Jul 6 20:44:18 UTC 2006
Today I needed to install Oracle and some other things on my PC, but I
realize that it would be better to make a snapshot and then reboot Linux
with this snapshot mounted instead of root.
Ok, I did that and changed fstab to mount my snapRoot instead root,
ok...I saw with 'df' command that it worked.
And I've installed all what I wanted, some garbage too...by the way,
this snapRoot doesnt means nothing to me, just for testing. And then I
changed the fstab again to mount the root original. But after it, all
the changes I made on snapshot was made on my root LV too. And the
lvdisplay command shows something strange now, about these two LV's. The
output is:
--- Logical volume ---
LV Name /dev/dutcheVG/root
VG Name dutcheVG
LV UUID aAN6BH-GqW3-zhtr-KeIt-BW4m-qEyw-RypMit
LV Write Access read/write
LV snapshot status source of
/dev/dutcheVG/snap_root [INACTIVE]
LV Status available
# open 0
LV Size 9.27 GB
Current LE 2372
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 254:5
--- Logical volume ---
LV Name /dev/dutcheVG/snap_root
VG Name dutcheVG
LV UUID cj2PD2-4OYX-eCzw-kG5y-r071-icK0-dq7FBr
LV Write Access read/write
LV snapshot status INACTIVE destination for /dev/dutcheVG/root
LV Status NOT available
LV Size 9.27 GB
Current LE 2372
COW-table size 2.00 GB
COW-table LE 512
Snapshot chunk size 8.00 KB
Segments 1
Allocation inherit
Read ahead sectors 0
I donno what is really happening, does anybody can explain me? Plz!!
Thanks in advance
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