Patch Name: PHKL_10314 Patch Description: s700 10.10 UFS disk space leak when mmap()'ing small files Creation Date: 97/03/11 Post Date: 97/03/13 Hardware Platforms - OS Releases: s700: 10.10 Products: N/A Filesets: OS-Core.CORE-KRN Automatic Reboot?: Yes Status: General Release Critical: Yes PHKL_10314: OTHER UFS file systems could experience disk space leak. Path Name: /hp-ux_patches/s700/10.X/PHKL_10314 Symptoms: PHKL_10314: Disk space leak on UFS file systems; running fsck(1M) on a `clean' file system would report inconsistencies such as: ... ** Phase 1 - Check Blocks and Sizes INCORRECT BLOCK COUNT I=386 (4 should be 1) ... ** Phase 5 - Check Cyl groups 3 BLK(S) MISSING ... This would be observed only on UFS file systems with a fragment size less than 4KB. Defect Description: PHKL_10314: A corner case use of mmap(2) consisting of mapping the first few bytes of a small file (less than 3KB) residing on a UFS file system wrongly resulted in increasing the number of fragments allocated to the file. The file-system disk space could leak, but running fsck(1M) would fix the problem. This problem would only occur on UFS file systems using a fragment size less than 4KB. SR: 4701347963 Patch Files: /usr/conf/lib/libhp-ux.a(ufs_vm.o) what(1) Output: /usr/conf/lib/libhp-ux.a(ufs_vm.o): ufs_vm.c $Date: 97/03/11 16:40:00 $ $Revision: 1.3.89.15 $ PATCH_10.10 (PHKL_10314) cksum(1) Output: 3932450653 10096 /usr/conf/lib/libhp-ux.a(ufs_vm.o) Patch Conflicts: None Patch Dependencies: None Hardware Dependencies: None Other Dependencies: None Supersedes: None Equivalent Patches: PHKL_10315: s800: 10.10 PHKL_10259: s700: 10.20 PHKL_10260: s800: 10.20 Patch Package Size: 60 Kbytes Installation Instructions: Please review all instructions and the Hewlett-Packard SupportLine User Guide or your Hewlett-Packard support terms and conditions for precautions, scope of license, restrictions, and, limitation of liability and warranties, before installing this patch. ------------------------------------------------------------ 1. Back up your system before installing a patch. 2. Login as root. 3. Copy the patch to the /tmp directory. 4. Move to the /tmp directory and unshar the patch: cd /tmp sh PHKL_10314 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHKL_10314.depot 5b. For a homogeneous NFS Diskless cluster run swcluster on the server to install the patch on the server and the clients: swcluster -i -b This will invoke swcluster in the interactive mode and force all clients to be shut down. WARNING: All cluster clients must be shut down prior to the patch installation. Installing the patch while the clients are booted is unsupported and can lead to serious problems. The swcluster command will invoke an swinstall session in which you must specify: alternate root path - default is /export/shared_root/OS_700 source depot path - /tmp/PHKL_10314.depot To complete the installation, select the patch by choosing "Actions -> Match What Target Has" and then "Actions -> Install" from the Menubar. 5c. For a heterogeneous NFS Diskless cluster: - run swinstall on the server as in step 5a to install the patch on the cluster server. - run swcluster on the server as in step 5b to install the patch on the cluster clients. By default swinstall will archive the original software in /var/adm/sw/patch/PHKL_10314. If you do not wish to retain a copy of the original software, you can create an empty file named /var/adm/sw/patch/PATCH_NOSAVE. Warning: If this file exists when a patch is installed, the patch cannot be deinstalled. Please be careful when using this feature. It is recommended that you move the PHKL_10314.text file to /var/adm/sw/patch for future reference. To put this patch on a magnetic tape and install from the tape drive, use the command: dd if=/tmp/PHKL_10314.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: None