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ZFS, /etc/zfs/zpool.cache and suncluster
ZFS still a very young FS and many new features with every new Solaris update and ZFS patch
This blog talk about /etc/zfs/zpool.cache behind the sence of zpool
The need of /etc/zfs/zpool.cache to speed up the import of ZFS may impact the HA-ZFS with Suncluster, the ZFS import happen before the Suncluster come to play.
In the beginning ZFS was designed to panic a system in the event of a catastrophic
write failure to a pool, since then zfs has introduce the failmode. PSARC 2007/567
The default behavior will be to "wait" for manual intervention before
allowing any further I/O attempts. Any I/O that was already queued would
remain in memory until the condition is resolved. This error condition can
be cleared by using the 'zpool clear' subcommand, which will attempt to resume
any queued I/Os.
The "continue" mode returns EIO to any new write request but attempts to
satisfy reads. Any write I/Os that were already in-flight at the time
of the failure will be queued and maybe resumed using 'zpool clear'.
Finally, the "panic" mode provides the existing behavior that was explained
above.
The syntax for setting the pool property utilizes the "set" subcommand defined
in PSARC 2006/577:
# zpool set failmode=continue pool
# zpool create -o failmode=continue pool
ZFs and suncluster
Sun alert Solution 245626 : ZFS Pool Corruption May Occur With Sun Cluster 3.2 Running Solaris 10 with patch 137137-09 or 137138-09
Resolution
This issue is addressed in the following releases:
SPARC Platform:
* Solaris 10 with patch 139579-02 or later obsoleted by 139555-08
x86 Platform:
* Solaris 10 with patch 139580-02 or later obsoleted by 139556-08
To avoid this problem, install Solaris 10 patch 139579-02 (for SPARC) or 139580-02 (for x86) immediately after you install 137137-09 or 137138-09 but before you reboot the cluster nodes.
The latest Suncluster 3.2u2 patch for solaris 10
sparc 126106-30
x86 126107-30
There are some IDR patch for ZFS performance
To boot the system without import any zpool
boot -m milestone=none
return to normal
svcadm milestone all
Posted at 08:10PM May 17, 2009 by hstsao in General | Comments[0]
Sun Storage 7xxx Unfied Storage System
Sun announced Sun Storage 7xxx Unified System the first product of the family 7110, one can find the docs here http://docs.sun.com/app/docs/coll/stor-7110
Product Description The Sun Storage 7000 Unified Storage products provide efficient file and block data services to clients over a network, and a rich set of data services that can be applied to the data stored on the system. The Unified Storage Systems include support for a variety of industry-standard client protocols, including: * CIFS * NFS * HTTP * WebDAV * iSCSI * FTP Your Unified Storage System also includes new technologies to deliver the best storage price/performance and unprecedented observability of your workloads in production, including: * Analytics, a feature for dynamically observing the behavior of your system in real-time and viewing data graphically. * The Hybrid Storage Pool, composed of optional Flash-memory devices for acceleration of reads and writes, low-power, high-capacity disks, and DRAM memory, all managed transparently as a single data hierarchy. To manage the data that you export using these protocols, you can configure your Unified Storage System using our built-in collection of advanced data services, including: * RAID-Z (RAID-5 and RAID-6), Mirrored, and Striped * Snapshots, unlimited read-only and read-write, with snapshot schedules * Built-in Data Compression * Remote Replication of data for Disaster Recovery * Active-Active Clustering (in the Sun Storage 7410) for High Availability * Thin Provisioning of iSCSI LUNs * Virus Scanning and Quarantine * NDMP Backup and Restore To maximize the availability of your data in production, the Sun Storage products include a complete end-to-end architecture for data integrity, including redundancies at every level of the stack. Key features include: * Predictive Self-Healing and Diagnosis of all System FRUs: CPUs, DRAM, I/O cards, Disks, Fans, Power Supplies * ZFS End-to-End Data Checksums of all Data and Metadata, protecting data throughout the stack * RAID-6 (DP) and optional RAID-6 Across JBODs * Active-Active Clustering for High Availability * Link Aggregations and IP Multipathing for Network Failure Protection * I/O Multipathing between the Sun Storage 7410 and JBODs * Integrated Software Restart of all System Software Services * Phone-Home of Telemetry for all Software and Hardware Issues * Lights-out Management of each System for Remote Power Control and Console Access
Posted at 03:58PM May 17, 2009 by hstsao in General | Comments[0]
Sun Net Connect to be disabled on May 30, 2009
Email send to all registered Net Connect customer on march 11, 2009
Sun Alert 257308 "On may 30, 2009 Sun Net Connect Service will be disabled. Failure to uninstall Client may cause downtime"
replacement solutions
Posted at 11:34AM May 17, 2009 by hstsao in General | Comments[0]
x41450 and x4450 support of window 2008 server
The X4150 and X4450 are Certified to run Windows 2008 today(may/01/2008). There are no additional drivers needed for these platforms to work with Windows 2008. However, there is a minimum BIOS requirement
X4150 Mircosoft Windows 2008 Certification link:
x4150 Micosoft Window 2008 Certification link
Note: You will need BIOS version 1ADQW020 or greater to support Windows 2008.
BIOS version 1ADQW020 can be found here:
X4450 Mircosoft Windows 2008 Certification link:
x4450 Micosoft Window 2008 Certification link
Note: You will need BIOS version 1ADQW020 or greater to support Windows 2008.
BIOS version 1ADQW020 can be found here:
Posted at 03:11PM May 01, 2008 by hstsao in General | Comments[0]
change hostid
Recently a customer request some way to migrate from older Sun server and solaris to newer server and Solaris but with one condition: need to preserve the hostid so the license server can use the license file with old hostid.
After some research, I find the followings possible solutions:
Posted at 10:15PM Apr 16, 2008 by hstsao in General | Comments[0]
Fatherhood 2.0
I was reading this article in Time on fatherhood 2.0
Now my two sons are all grow up and realized that I am really a early adapter of the FH2.0.
I met my wife as classmate in NTU and come to SUNY SB for graduate school together
When our 1st son was born, she start commute to NYC from Princeton, I am the one take our son to baby sitter in the morning and pick him up in the afternoon.
When we were in NYC, our son attend the pre-school in the Univ and She need to commute to Brooklyn and send our son to school and pick him up again.
I am not a great cook but I can do survival cooking, washing cloths and shopping for foods and both our sons can take care themself after their dad
Posted at 12:23PM Oct 14, 2007 by hstsao in General | Comments[1]
Sun opensource
Sun is a long time opensource contributor
Beside OpenSolaris, java, SGE, netbean and openoffice. the glassfish (AS) and openPortal (PS) are gaining momentum and there is commerical support version.
The openDS and openESB will find their way into support version
User can try and buy Sun's HW and download and test and deploy most Sun's SW free of charge
Posted at 11:56AM Oct 14, 2007 by hstsao in General |
2U 4 Socket intel quad-core and AMD
Recently Sun anounced 2U 4 Socket system for Intel quad-core and indicate similar system for AMD dual-core and quad-core system is coming
These system will be best system to run Solaris, linux, window and vmware ESX system
A perfect systems for V12N
Sun's recent OEM aggreement with Microsoft and setting up joining competency center could be the first step for customer to consider Sun platform for Microsoft environment.
Posted at 10:54AM Oct 14, 2007 by hstsao in General | Comments[1]
Sun Academic Initiative
SAI Education Solaris 10[Read More]
Posted at 03:56PM Oct 08, 2006 by hstsao in General |
NAS5320 and oracle 10gRAC and DR
Recently announced NAS5320 has many interesting features
Posted at 07:48PM Jul 17, 2006 by hstsao in General |
qualification of new OS for v20z (RHEL4, SLES9 SP1)
There are many new OS release and SUN's HW need to keep up with the lastest version
and there are many required test need to be done to qualify a new OS
But many users will want to use the latest OS release and redhatEL4 and SLES9sp1 are examples that user want to use and SUN has not certificate those two OSs as of today
The following statement is not a official statement but a personal experience, just to answer question like did some try to install it and it work?
sles9sp1 work fine on v20z and I installed RHEL4 without any problem
Posted at 01:52PM Apr 25, 2005 by hstsao in General | Comments[24]
JDS and solaris 10 and vmware
Evey since I got a new latop with JDS installed I always want to re-partition the JDS disk and install s10 on the 2nd partition. I try and install the s10 but it does not recognized the NIC, so I have a s10 without network. For some unknow reason, I could not really dual boot, and I donot really have time to track down the problem, so I give up. Recently, I download the vmware 4.5 and sucessifully install s10 as a guest OS., with NIC.
I also download the N1SPS demo for bookstore with a guest OS redahat8.
I install readhat AS2.1 as guest OS and install SCS2.0 so I can show the SCS GUI demo.
I finally get the real production version of vmware.
I can give a presentation using JDS for
Posted at 08:43AM Oct 10, 2004 by hstsao in General |
internet2 and SUN agreement to use EduSoft SW
main announcements link:
Summary of the agreement:IMHO, the hidden benefits for school are the followings:
Posted at 05:12AM Oct 04, 2004 by hstsao in General |
solsris 9 09/04
New features:
Posted at 05:42AM Jul 24, 2004 by hstsao in General |
Solaris 9 Tuning parameters change
Each version of Solaris Change some default parameters in Solaris kernel
Those changes, should be documented in the release note, but AFAIK is not..
They are documented in the document Solaris Tuunable Parameters Reference Manual
Here let's discuss few of them on Appendix
Limit on the number of shared memory segments that any one process can attach.
Default 24576 to Default 49,152
Posted at 04:00PM Jul 13, 2004 by hstsao in General |