Daily Archives: August 20, 2015

Utvide ZFS pool med ny RAIDZ VDEV

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Rimelig rett frem, det vil riktignok ikke være noen rebalansering av data, så dette må en ta seg av selv. Fordelen er jo at kommandoen er ferdig på sekunder og plassen kan utnyttes umiddelbart.

Først kjørte jeg kommandoen med oppsjonen “-n” for å være sikker på at den var korrekt.

# zpool add -n tank raidz ata-HGST_HDN724040ALE640_PK1381PCJSZ50S-part4 ata-HGST_HDN724040ALE640_PK1381PCJT6EWS-part4 ata-HGST_HDN724040ALE640_PK1381PCK3N9DS-part4 ata-HGST_HDN724040ALE640_PK1381PCKZ840S-part4
would update 'tank' to the following configuration:
tank
raidz1
ata-HGST_HDS724040ALE640_PK1334PBGX5SJS-part4
ata-HGST_HDS724040ALE640_PK1334PBGY417S-part4
ata-HGST_HDS724040ALE640_PK1334PBHJT8NP-part4
ata-HGST_HDS724040ALE640_PK1334PBHJT9UP-part4
raidz1
ata-HGST_HDN724040ALE640_PK1381PCJSZ50S-part4
ata-HGST_HDN724040ALE640_PK1381PCJT6EWS-part4
ata-HGST_HDN724040ALE640_PK1381PCK3N9DS-part4
ata-HGST_HDN724040ALE640_PK1381PCKZ840S-part4
logs
mirror
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485213N-part5
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485216D-part5
cache
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485213N-part6
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485216D-part6

Ser riktig ut, så da kjører vi kommandoen.


# zpool add tank raidz ata-HGST_HDN724040ALE640_PK1381PCJSZ50S-part4 ata-HGST_HDN724040ALE640_PK1381PCJT6EWS-part4 ata-HGST_HDN724040ALE640_PK1381PCK3N9DS-part4 ata-HGST_HDN724040ALE640_PK1381PCKZ840S-part4
# zpool status
pool: tank
state: ONLINE
scan: scrub repaired 0 in 21h19m with 0 errors on Sat Aug 15 01:49:26 2015
config:

NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
ata-HGST_HDS724040ALE640_PK1334PBGX5SJS-part4 ONLINE 0 0 0
ata-HGST_HDS724040ALE640_PK1334PBGY417S-part4 ONLINE 0 0 0
ata-HGST_HDS724040ALE640_PK1334PBHJT8NP-part4 ONLINE 0 0 0
ata-HGST_HDS724040ALE640_PK1334PBHJT9UP-part4 ONLINE 0 0 0
raidz1-2 ONLINE 0 0 0
ata-HGST_HDN724040ALE640_PK1381PCJSZ50S-part4 ONLINE 0 0 0
ata-HGST_HDN724040ALE640_PK1381PCJT6EWS-part4 ONLINE 0 0 0
ata-HGST_HDN724040ALE640_PK1381PCK3N9DS-part4 ONLINE 0 0 0
ata-HGST_HDN724040ALE640_PK1381PCKZ840S-part4 ONLINE 0 0 0
logs
mirror-1 ONLINE 0 0 0
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485213N-part5 ONLINE 0 0 0
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485216D-part5 ONLINE 0 0 0
cache
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485213N-part6 ONLINE 0 0 0
ata-Samsung_SSD_840_EVO_250GB_S1DBNSBF485216D-part6 ONLINE 0 0 0

errors: No known data errors
# zpool list tank
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
tank 28.2T 11.8T 16.4T - 9% 41% 1.00x ONLINE -

Utvide mdadm RAID10

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Det var litt lite informasjon via google om dette var støttet. Men det viser seg etter litt graving at dette går fint så lenge RAID10 settet er opprettet via mdadm 3.3

Selve utvidelsen er rimelig rett frem.


# cat /proc/mdstat
md1 : active raid10 sda3[0] sdc3[2] sdd3[3] sdb3[1]
195179520 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]

# mdadm --manage /dev/md1 --add /dev/sde3 /dev/sdf3 /dev/sdg3 /dev/sdh3
# mdadm --grow --raid-devices=8 /dev/md1
# cat /proc/mdstat
md1 : active raid10 sdh3[7] sdg3[6] sdf3[5] sde3[4] sda3[0] sdc3[2] sdd3[3] sdb3[1]
195179520 blocks super 1.2 512K chunks 2 near-copies [8/8] [UUUUUUUU]
[>....................] reshape = 0.1% (339584/195179520) finish=9.5min speed=339584K/sec