search for: biowait

Hi, I know how to trace the number of bytes read/written by a program by summing the argument of that read/write syscall. However, the way the OS services read/write calls is in blocks. I wonder if it''s possible to trace the actual number of blocks read/written caused by the syscalls? -- This message posted from opensolaris.org

Hi, I''m working on some performance analysis with our database and it seems that when the file system (UFS) is mounted with forcedirectio, the IO probe are not triggered when an I/O event occurs. Could you confirm that ? If so, why ? Seb -- This message posted from opensolaris.org

IHAC that is asking the following. any thoughts would be appreciated Take two drives, zpool to make a mirror. Remove a drive - and the server HANGS. Power off and reboot the server, and everything comes up cleanly. Take the same two drives (still Solaris 10). Install Veritas Volume Manager (4.1). Mirror the two drives. Remove a drive - everything is still running. Replace the drive, everything

I''m looking at bringing up a new Solaris 10 based file server running off an older UltraSPARC-IIi 360MHz with 512mb ram. I''ve brought up the 11/06 release from scratch no patches installed at this time. I have 4 externally attached 36gb scsi devices off the hosts systems scsi bus. After setting up a few different zpool scenarios with mirrors, raidz, raidz2 to familiarize

Hi, There seems to be a few threads about zpool hang, do we have a workaround to resolve the hang issue without rebooting ? In my case, I have a pool with disks from external LUNs via a fiber cable. When the cable is unplugged while there is IO in the pool, All zpool related command hang (zpool status, zpool list, etc.), put the cable back does not solve the problem. Eventually, I

...ap.c:466 #6 0xc01e6a84 in xl_newbuf (sc=0xc228f000, c=0xc228f218) at /usr/src/sys/pci/if_xl.c:1817 #7 0xc01e6c3e in xl_rxeof (sc=0xc228f000) at /usr/src/sys/pci/if_xl.c:1918 #8 0xc01e737c in xl_intr (arg=0xc228f000) at /usr/src/sys/pci/if_xl.c:2156 #9 0xc0235cda in vec3 () #10 0xc0192dff in biowait (bp=0xc7524558) at /usr/src/sys/kern/vfs_bio.c:2644 #11 0xc0190647 in bread (vp=0xce705840, blkno=1831456, size=16384, cred=0x0, bpp=0xced05b98) at /usr/src/sys/kern/vfs_bio.c:527 #12 0xc01fc39d in indir_trunc (ip=0xced05be0, dbn=1831456, level=0, lbn=12, countp=0xced05bd0) at /usr/src/sy...

Hi all, I was intending on trying out gjournal on a new disk i've added in my desktop. I had a look to see what the most recent patch provided by Pawel and found http://people.freebsd.org/~pjd/patches/gjournal6_20061024.patch I created the directories as per Pawel's original post (http://lists.freebsd.org/pipermail/freebsd-fs/2006-June/001962.html) and the patch succeeded with no failed