mikeleahy
asked on
vmware storage issue
hi
im fairly new to storage and was wondering if someone could provide me answers please
1. when you go into /vmfs/volumes and do an ls i get the lun names e.g. lun1, lun2 etc and then i also get numbers like 4db34dgfs and a lot more digits etc. what are these? are they vml's from the luns to the actual volumes they see?
2. if i do a hexdump -c on a vmfs volume - what is this magic number i hear people on about and what does it mean ?//
im fairly new to storage and was wondering if someone could provide me answers please
1. when you go into /vmfs/volumes and do an ls i get the lun names e.g. lun1, lun2 etc and then i also get numbers like 4db34dgfs and a lot more digits etc. what are these? are they vml's from the luns to the actual volumes they see?
2. if i do a hexdump -c on a vmfs volume - what is this magic number i hear people on about and what does it mean ?//
ASKER CERTIFIED SOLUTION
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you should also be able to access the contents of the datastore using the friendly name you have given the datastore or the datastore GUUID
by using
e.g.
cd "4e79251f-de887b6c-f3e5-98
or
cd" iSCSI-lun1"
by using
e.g.
cd "4e79251f-de887b6c-f3e5-98
or
cd" iSCSI-lun1"
as for 2. if i do a hexdump -c on a vmfs volume - what is this magic number i hear people on about and what does it mean ?//
you'll need to expand?
you'll need to expand?
maybe you are referring to Partition Alignment or Offset?
in what context have you seen the hexdump used?
in what context have you seen the hexdump used?
ASKER
thanks for that = what i mean is if i do a hexdump of a lun how can i tell if its a vmfs partition ?
ASKER
and also how do i find the links between /dev/sda / b /c etc to the guuid and friendlly name ?
SOLUTION
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ASKER
thanks
ASKER
very fast response and excellent knowledge
lrwxr-xr-x 1 root root 35 Sep 29 17:45 iSCSI-lun1 -> 4e79251f-de887b6c-f3e5-984
lrwxr-xr-x 1 root root 35 Sep 29 17:45 iSCSI-lun2 -> 4e7b4ff6-78633f91-9737-984
lrwxr-xr-x 1 root root 35 Sep 29 17:45 iSCSI-lun3 -> 4e82209c-7fa9e707-3ed6-984
lrwxr-xr-x 1 root root 17 Sep 29 17:45 nfs -> 892c4679-1a95feb0