Hi, I came across this exact same problem when using Intel X25-E Extreme 32GB SSD disks as ZIL and L2ARC devices in a T5220 server. Since I didn't see a definitive solution here, I opened a support case with Oracle. They told me to upgrade the firmware on my SSD disks and LSI Expander, and the problem went away.
Here's the solution they gave me after an analysis of my system: [i]1. customer is using systemboard 540-7970 (showfru). According to SSH (http://sunsolve.central/handbook_internal/Devices/System_Board/SYSBD_SE_T5120_T5220.html#7970) this is 1068E B2 board. Customer's LSI firmware is at latest already (1.27.02.00). So, 140952-02 not needed. 2. SSD is at 8850 (diskinfo), need to go to 8855->8862 (143211-01, obsolete by 143211-02, rev 8862). No Cougar Card I can see, hence aac drive patch not needed. see README in 143211-02 3. btw, Customer already at KUP 139555-08 & 140796-01. So, here is what I suggest, Most importantly, the ssd disk fw patch is the most critical as readme from patch 143211-02 states the possible bug fixes (CR 6918513 & 6827668). Follow the Install Instructions there. As far as the patch 141043-01 (LSI Expander firmware for 16 Disk backplane on Sun SPARC Enterprise T5220 and T5240 platforms), your disk backplane version maybe already there. But, there is no way to tell as far as I know until one goes through the update process. Perhaps customer can skip for now. Otherwise, they can go through it but skip step 1-3 Install.info from patch 141043-01 1. # patchadd <filepath>126419-02 2. # patchadd <filepath>138888-05 3. # reboot **After reboot, need to install firmwareflash package for SPARC systems 4. # pkgadd -d <filepath-to-SUNWfirmwareflash> 5. # firmwareflash -l **To list all available ses devices in the system 6. # firmwareflash -d <ses device path> -f LSI_X28EXPDR_16DISK_BootRec_REV5-SPARC_Enterprise_T5220+T5240.rxp 7. # reboot 8. # You must now power cycle the system to run the new boot record firmware just loaded. [/i] So the main thing you need to do is apply firmware upgrade 143211-02, which specifically addresses the issue of retryable writes on SSD disks. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
