I applied the latest recommended patch bundle this week to two X4140 servers running Solaris 10. When I rebooted, I was greeted with a grub> prompt instead of the grub menu:
grub>
This wasn’t so good, and for some reason the stage1 / stage2 loaders weren’t installed correctly (or the zpool upgrade caused some issues). To fix [...]
I had a a process hang last week on one of my Solaris hosts, and was curious what each thread was doing. The mdb utility is perfect for locating this information, since you an combine pid2proc with the walk and findstack dcmds to get the call stack of each thread in a process (in the [...]
While reviewing the DNS logfiles on one of my name servers, I noticed that one of my Solaris hosts was querying getupdates.sun.com once per hour:
Sep 30 02:28:05 dns named[1097]: [ID 866145 local0.info] client 1.2.3.4#47644: view internal: query: getupdates.sun.com IN A +
Sep 30 03:27:35 dns named[1097]: [ID 866145 local0.info] client 1.2.3.4#47738: view internal: query: getupdates.sun.com IN [...]
While I was analyzing the performance characteristics of one of my Solaris 9 Oracle database servers, I needed to map a file descriptor listed in the pfiles output to the actual file name on the file system (Solaris 10 provides this information in the pfiles output, which is yet another reason to run Solaris 10). [...]
I was recently asked to debug a performance problem with a message passing applications. Once I received an overview of how the application worked, I started digging through the system data. To see where the application was spending it’s time, I ran the following DTrace program:
$ cat syscalltime.d
#pragma D option quiet
syscall:::entry
/ execname == “yap” [...]
While attempting to jumpstart my Sun Ultra 10 this week, I encountered the following error:
ok boot net:dhcp – install
Boot device: /pci@1f,0/pci@1,1/network@1,1:dhcp File and args: – install
38800 panic – boot: Could not mount filesystem.
Program terminated
The machine was getting a kernel, but for some reason was unable to mount the Solaris miniroot. Since DHCP was used [...]
