ZFS secondarycache on SSD problem on r255173

From: Dmitryy Makarov <supportme_at_ukr.net>
Date: Fri, 13 Sep 2013 14:16:24 +0300

('binary' encoding is not supported, stored as-is) Hello, FreeBSD Current. Have some trouble with adding SSD drive as secondarycache device on 10.0-CURRENT FreeBSD 10.0-CURRENT #1 r255173 : SSD INTEL SSDSC2BW180A4 dmesg: ada1 at ahcich2 bus 0 scbus4 target 0 lun 0 ada1: <INTEL SSDSC2BW180A4 DC02> ATA-9 SATA 3.x device ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada1: Command Queueing enabled ada1: 171705MB (351651888 512 byte sectors: 16H 63S/T 16383C) ada1: quirks=0x1<4K> ada1: Previously was known as ad8 # diskinfo -v /dev/ada1 /dev/ada1         512             # sectorsize         180045766656    # mediasize in bytes (167G)         351651888       # mediasize in sectors         4096            # stripesize         0               # stripeoffset         348861          # Cylinders according to firmware.         16              # Heads according to firmware.         63              # Sectors according to firmware.         BTDA326504N51802GN      # Disk ident. Creating partition and adding: # gpart create -s gpt ada1 # gpart add -t freebsd-zfs -s3G -l zil0 ada1 # gpart add -t freebsd-zfs  -l cache0 ada1 # zpool add disk1 log /dev/gpt/zil0 # zpool add disk1 cache /dev/gpt/cache0 After that have:       log            gpt/zil0                                  ONLINE       0     0     0      cache           gpt/cache0    ONLINE       0     0     0  block size: 512B configured, 4096B native But why? ZFS can't properly set sector size for cache device (quirks=0x1<4K>)? And have some strange behavior with ZIl partition on the same SSD - everything works! Okay, was trying to do some workaround with GNOP: # gnop create -S4096 /dev/gpt/cache0 # zpool add disk1 cache /dev/gpt/cache0.nop Seems to be OK  cache           gpt/cache0.nop    ONLINE       0     0     0 But after reboot pool has status:One or more devices are configured to use a non-native block size.         Expect reduced performance. cache           gptid/39e40c33-1c4d-11e3-ac20-002590aa9548  ONLINE       0     0     0  block size: 512B configured, 4096B native And no gnop parts was found, and even gpart (in /dev/gpart) # gnop status # gnop: Command 'status' not available. # gpart show -l ada1 =>  34  351651821  ada1  GPT  (167G)          34          6        - free -  (3.0k)          40    6291456     1  zil0  (3.0G)     6291496  345360352     2  cache0  (164G)   351651848          7        - free -  (3.5k) # ls /dev/gpt/cache* zsh: no matches found: /dev/gpt/cache* Please, help to deal with this problem. Or what else information can be useful to find out this trouble. Received on Fri Sep 13 2013 - 09:34:34 UTC