bom até onde eu conheço nao se deve utilizar cache com ZFS em raidZ pois o cache pode corromper a gravação da paridade no disco. esta no manual do zfs atualizado.
Consider the following points when determining whether to create a ZFS storage pool with cache devices: added and removed after the pool is created. For more information, see Example 4–4. Chapter4 • ManagingOracleSolarisZFSStoragePools 71 Creating and Destroying ZFS Storage Pools Creating and Destroying ZFS Storage Pools Cache devices cannot be mirrored or be part of a RAID-Z configuration. If a read error is encountered on a cache device, that read I/O is reissued to the original storage pool device, which might be part of a mirrored or a RAID-Z configuration. The content of the cache devices is considered volatile, similar to other system caches. espero ter ajudado estou esperando o ZFS v28 que o PWD esta portando pra versão estável do freebsd. Em 23/09/2010, às 10:53, Ion-Mihai Tetcu escreveu: > On Wed, 22 Sep 2010 15:06:23 -0300 > Alessandro de Souza Rocha <[email protected]> wrote: > >> eu fiz um raid1 com 2 hds de 80gb. >> alessan...@nslink:/home/alessandro# zpool list >> NAME SIZE USED AVAIL CAP HEALTH ALTROOT >> zroot 69.5G 5.14G 64.4G 7% ONLINE - > > My desktop: > > root(itetcu)@it> /usr/ports/editors/vim [16:21:21] 0 > # zpool status > pool: tank > state: ONLINE > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > tank ONLINE 0 0 0 > raidz2 ONLINE 0 0 0 > ad6 ONLINE 0 0 0 > ad8 ONLINE 0 0 0 > ad10 ONLINE 0 0 0 > ad12 ONLINE 0 0 0 > ad14 ONLINE 0 0 0 > cache > da0 UNAVAIL 0 0 0 cannot open > da1 UNAVAIL 0 0 0 cannot open > > errors: No known data errors > root(itetcu)@it> /usr/ports/editors/vim [16:21:23] 0 > # zfs list > NAME USED AVAIL REFER MOUNTPOINT > tank 739G 621G 32.2K /tank > tank/compat 261M 621G 32.2K none > tank/compat/linux 261M 621G 261M /compat/linux > tank/usr 739G 621G 32.2K none > tank/usr/home 728G 621G 34.0K /usr/home > tank/usr/home/itetcu 728G 621G 720G /usr/home/itetcu > tank/usr/local 5.66G 621G 5.59G /usr/local > tank/usr/ports 4.76G 621G 1.38G /usr/ports > tank/usr/ports/distfiles 3.32G 621G 3.31G /usr/ports/distfiles > tank/var 254M 621G 34.0K none > tank/var/db 254M 621G 32.2K none > tank/var/db/pkg 47.3M 621G 42.4M /var/db/pkg > tank/var/db/portindex 93.6M 621G 61.0M /var/db/portindex > tank/var/db/ports 3.07M 621G 2.61M /var/db/ports > tank/var/db/sup 110M 621G 34.8M /var/db/sup > root(itetcu)@it> /usr/ports/editors/vim [16:22:34] 0 > # zfs list -t snapshot | wc -l > 958 > > Os dois dispositivos de cache sao dois sticks USB que morreu. > > > > -- > IOnut - Un^d^dregistered ;) FreeBSD "user" > "Intellectual Property" is nowhere near as valuable as "Intellect" > FreeBSD committer -> [email protected], PGP Key ID 057E9F8B493A297B > ------------------------- > Histórico: http://www.fug.com.br/historico/html/freebsd/ > Sair da lista: https://www.fug.com.br/mailman/listinfo/freebsd ------------------------- Histórico: http://www.fug.com.br/historico/html/freebsd/ Sair da lista: https://www.fug.com.br/mailman/listinfo/freebsd
