Dear Guru's,
Couple of questions about the striped-mirror volume below:
1. Why the volume size ( 20971520 ) doesn't match the size of any of
the plexes ( 20974356 and 20977888 ) ?
2. Why the sizes of 2 plexes don't match ( 20974356 and 20977888 ) ?
3. Why the sizes of subdisks are different between plexes (6991380 and
6992608 ) for the same layout and column size?
4. Why the total size of 3 subdisks is less than the plex size ?
Plex HUB2_DB_DATA04-01 : 3*6991380 = 20974140 less than 20974356
(difference is 216)
Plex HUB2_DB_DATA04-02 : 3*6992608 = 20977824 less than 20977888
(difference is 64)
bash-2.03# vxprint -ht HUB2_DB_DATA04
Disk group: hubdrdg
V NAME RVG KSTATE STATE LENGTH USETYPE PREFPLEX RDPOL
PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE
SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE
SV NAME PLEX VOLNAME NVOLLAYR LENGTH [COL/]OFF AM/NM MODE
v HUB2_DB_DATA04 - ENABLED ACTIVE 20971520 fsgen -
SELECT
pl HUB2_DB_DATA04-01 HUB2_DB_DATA04 ENABLED ACTIVE 20974356 STRIPE 3/128 RW
sd hubdrdg13-08 HUB2_DB_DATA04-01 hubdrdg13 30409614 6991380 0/0 c2t38d0 ENA
sd hubdrdg15-08 HUB2_DB_DATA04-01 hubdrdg15 30409614 6991380 1/0 c2t40d0 ENA
sd hubdrdg01-12 HUB2_DB_DATA04-01 hubdrdg01 35370027 6991380 2/0 c2t37d0 ENA
pl HUB2_DB_DATA04-02 HUB2_DB_DATA04 ENABLED ACTIVE 20977888 STRIPE 3/128 RW
sd hubdrdg09-02 HUB2_DB_DATA04-02 hubdrdg09 6992608 6992608 0/0 c2t50d0 ENA
sd hubdrdg09-01 HUB2_DB_DATA04-02 hubdrdg09 0 6992608 1/0 c2t50d0 ENA
sd hubdrdg17-10 HUB2_DB_DATA04-02 hubdrdg17 59267835 6992608 2/0 c2t56d0 ENA
bash-2.03#
Sorry for asking basic Volume Manager questions. Any URL with
documents / explanations are appreciated.
Thank you,
Aleksandr
_______________________________________________
Veritas-vx maillist - [email protected]
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
