z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

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UNMOUNT Parameters FILESYSTEM(file_system_name) Specifies the name of the file system to be removed from the file system. The name supplied is changed to all uppercase characters. This operand is required. file_system_name The fully qualified name of the data set that contains the file system. The file system name supplied is changed to all uppercase characters. Specify the name of file system exactly as it was specified when the file system was originally mounted. You can enclose it in single quotes, but they are not required. If FILESYSTEM('''file_system_name''') is specified, the file system name will not be translated to uppercase. DRAIN Specifies that an unmount drain request is to be made. The system will wait for all use of the file system to be ended normally before the unmount request is processed or until another UNMOUNT command is issued. Note: UNMOUNT can be specified with IMMEDIATE to override a previous UNMOUNT DRAIN request for a file system. If this is used in the foreground, your TSO/E session waits until the UNMOUNT request has completed. (or ) does not terminate the command. UNMOUNT DRAIN is not supported in a sysplex environment. If an UNMOUNT DRAIN is issued in a sysplex, the following behavior is exhibited: v If there is no activity in the file system, UNMOUNT DRAIN will perform the unmount, but it will behave like an UNMOUNT NORMAL. v If there is activity in the file system, UNMOUNT DRAIN will return a Return_value of -1 with Return_code EINVAL and Reason_code JrNotSupInSysplex. FORCE Specifies that the system is to unmount the file system immediately. Any users accessing files in the specified file system receive failing return codes. All data changes to files in the specified file system are saved, if possible. If the data changes to the files cannot be saved, the unmount request continues and data is lost. Note: An UNMOUNT IMMEDIATE request must be issued before you can request a UNMOUNT FORCE of a file system. Otherwise, UNMOUNT FORCE fails. IMMEDIATE Specifies that the system is to unmount the file system immediately. Any users accessing files in the specified file system receive failing return codes. All data changes to files in the specified file system are saved. If the data changes to files cannot be saved, the unmount request fails. NORMAL Specifies that if no user is accessing any of the files in the specified file system, the system processes the unmount request. Otherwise, the system rejects the unmount request. This is the default. REMOUNT(RDWR|READ) Specifies that the specified file system be remounted, changing its mount mode. 874 z/OS V1R9.0 UNIX System Services Command Reference
Usage notes Return codes REMOUNT takes an optional argument of RDRW or READ. If you specify either argument, the filesystem is remounted in that mode if it is not already in that mode. If you specify REMOUNT without any arguments, the mount mode is changed from RDWR to READ or READ to RDWR. Note: REMOUNT is supported in a sysplex. RESET A reset request stops a previous UNMOUNT DRAIN request. Note: UNMOUNT RESET is not supported in a sysplex since UNMOUNT DRAIN is unsupported in a sysplex environment (see the description for DRAIN). 1. The directory /samples contain sample UNMOUNT commands (called unmountx). 2. If you unmount a TFS file system, all data stored in that file system is discarded. For more information on TFS, see z/OS UNIX System Services Planning. 3. If desired, the root file system can be umounted. If this is done, the IMMED operand must be specified. Unmounting the root will force all file system activity to be halted. Therefore, if this is done, a subsequent mount of a root file system should be done as soon as possible. 4. While the root file system is unmounted, a ’dummy file system’ root named SYSROOT will be displayed as the current root file system. During this time, any operation that requires a valid file system will fail. When the new root file system is subsequently mounted, you should terminate any currently dubbed users or issue a chdir using a full pathname to the appropriate directory so that the users can access the new root file system. 5. If the file system that you are unmounting is an NFS-supported file system, the UNMOUNT command may receive an EAGAIN return code if the request was made before an internal caching clock has expired. That is, there is a 60-second delay from last use before termination is possible. Try the request again. 6. A file system that has file systems mounted on it cannot be unmounted. Any children file systems must be unmounted first. 7. Currently a move of a filesystem that has open FIFOs causes all FIFOs to be marked stale. They must be closed and re-opened. Rather than do this on a remount, a remount attempt of a filesystem with open FIFOs will be rejected with EINVAL, JrFIFOInFileSys. FIFOs break on move or remount because FIFOs are always function-shipped to the filesystem owner, regardless of the mount mode. For remount, although the owner does not change, the vfs_umounts on all systems in the sysplex result in the XPFS control blocks (XFS, Xnodes) being released. These blocks contain owner information. Rejecting remount if open FIFOs is not expected to impact customers, since remount is typically done on a READ-ONLY filesystem to switch it to RDWR, and then back to READ, and FIFOs are not useful in a READ-ONLY filesystem. 0 Processing successful. 12 Processing unsuccessful. An error message has been issued. UNMOUNT Chapter 3. TSO/E commands 875
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times Option Usage Note Localizatio
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touch Localization Exit Values Mess
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| | | | | | | | | | | | tput Exit V
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| | | | | | | | | | | | | | | | | |
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trap Usage Note Examples Localizati
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tso Examples a mini-TSO/E environme
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tso export TSOPROFILE="prefix(wjs)
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tsort tsort — Sort files topologi
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type Exit Values Messages Portabili
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typeset Localization Exit Values Me
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| ulimit Usage notes Localization d
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umask Exit Values Portability v LC_
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uname Localization Usage Note Exit
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unexpand Options Localization Exit
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uniq Messages Portability Related I
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unmount Examples Usage notes codes.
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unpack File Exit Values Messages Po
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uptime uptime — Report how long t
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uucico daemon Options Examples File
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uucp Options v A pathname preceded
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uucp uucp remote!/tmp/file?.[!b]* /
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| | | | | | | | | | | | | | | | | |
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uuencode Localization Exit Values P
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uuname uuname — Display list of r
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uupick Localization Files Usage not
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uustat Examples rtype The request t
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uuto Description Options Localizati
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uux Options Unlike arguments to uuc
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uux Exit Values Portability Related
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uuxqt daemon Related Information uu
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vi These lines are not part of the
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vi m Records the current position p
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vi with a form feed (Ctrl-L), start
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vi same manner as the ex system com
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vi Ctrl-G Displays the current path
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vi command The command is a word, w
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vi arguments for the ab command, it
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vi [.,.] l[ist] [count] [flags] Dis
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vi so[urce] file Runs editor comman
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vi (^), the editor displays the scr
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vi autoindent, ai When autoindent i
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vi in the list are paragraph bounda
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vi wrapscan, ws If this option is o
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vi Localization Exit Values vi uses
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vi Related Information ed, ex, fg,
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wc Localization Exit Values Portabi
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who Files Localization Exit Values
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write Usage notes Localization Exit
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| writedown Examples 1 Failure due
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xlc and xlC The various compiler in
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xlc and xlC Setting up a configurat
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| | | | | | | | xlc and xlC CEE.SCE
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| | | | xlc and xlC 1. search place
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xlc and xlC * 64 bit ANSI C++ compi
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xlc and xlC principle, as both can
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xlc and xlC 5. -Bprefix and -tprogr
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xlc and xlC Note: When used in the
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xlc and xlC xlc -qipa=level=2:map:n
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| xargs xargs — Construct an argu
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xargs Example If no command templat
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yacc Options -b file_prefix Uses fi
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yacc Messages v Bad %start construc
Page 848 and 849: zcat Localization Exit Values Porta
Page 850 and 851: BPXBATCH BPXBATCH — Run shell com
Page 852 and 853: BPXBATCH Examples When PGM and prog
Page 854 and 855: MKDIR Return Codes Examples The def
Page 856 and 857: | | | | MOUNT MOUNT — Logically m
Page 858 and 859: | | | | | | | MOUNT file is sparse
Page 860 and 861: MOUNT Usage notes AUTOMOVE(EXCLUDE,
Page 862 and 863: MOUNT Return codes Examples As stat
Page 864 and 865: OCOPY Parameters v A file to an MVS
Page 866 and 867: OCOPY Usage notes TO1047 | FROM1047
Page 868 and 869: OCOPY PATHMODE (sirwxu) PATHOPTS (o
Page 870 and 871: OGET v A fully qualified name that
Page 872 and 873: OGET Return codes Examples 4. An ex
Page 874 and 875: OGETX example, doublebyte character
Page 876 and 877: OGETX Examples For OGETX to treat t
Page 878 and 879: OMVS Description Parameters RUNOPTS
Page 880 and 881: OMVS Table 37. Locales, Their Conve
Page 882 and 883: OMVS In general, the provider of th
Page 884 and 885: OMVS scrolled off the screen. If yo
Page 886 and 887: OMVS PF16(TOP) PF17(BOTTOM) PF18(TS
Page 888 and 889: OMVS HALFSCR Scrolls half the displ
Page 890 and 891: OPUT OPUT — Copy an MVS data set
Page 892 and 893: OPUT Return codes Examples the modu
Page 894 and 895: OPUTX v data_set_name(member_name).
Page 896 and 897: OSHELL Description OSHELL uses BPXB
Page 900 and 901: UNMOUNT Examples 1. The following c
Page 902 and 903: history — — Process a command h
Page 904 and 905: strings POSIX.2 XPG4.2 Display prin
Page 906 and 907: cpio — XPG4.2 Copy in/out file ar
Page 908 and 909: watchlog — — Report on users wh
Page 910 and 911: egexp that collation sequence). Any
Page 912 and 913: egexp Summary Examples The commands
Page 914 and 915: egexp 890 z/OS V1R9.0 UNIX System S
Page 916 and 917: BPXBATCH Format Description Any oth
Page 918 and 919: BPXBATCH Usage notes and exec. BPXB
Page 920 and 921: BPXBATCH The stdparm DD will allow
Page 922 and 923: BPXBATCH Files _BPX_BATCH_SPAWN cau
Page 924 and 925: BPXBATCH 900 z/OS V1R9.0 UNIX Syste
Page 926 and 927: | | | BPXCOPY Parameters v The mess
Page 928 and 929: BPXCOPY Specifying APF or NOAPF is
Page 930 and 931: BPXCOPY * ST 10,8(13) ST 13,SAVEARE
Page 932 and 933: Localization blank) and their behav
Page 934 and 935: 910 z/OS V1R9.0 UNIX System Service
Page 936 and 937: | cpio After the header information
Page 938 and 939: | | | | | | | | | | | | | | | | | |
Page 940 and 941: pax pax interchange format # The pu
Page 942 and 943: pax pax extended header regular fil
Page 944 and 945: pax linkpath The pathname of a link
Page 946 and 947: queuedefs This file indicates that
Page 948 and 949:
tar Description of the Header Files
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uucp All three files are stored in
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uucp Execute Files Execute files ar
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uucp 930 z/OS V1R9.0 UNIX System Se
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TZ Environment Variable Portability
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Environment Variables 934 z/OS V1R9
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MVS data sets 936 z/OS V1R9.0 UNIX
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Table 45. Commands that Disallow Au
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dbx: threads threads: Thread Displa
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| | | | | dbx: variables $hexchars
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| | | | | | | | | | | | | | | | | |
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946 z/OS V1R9.0 UNIX System Service
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Licensees of this program who wish
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usr/lib/cron/queuedefs file used by
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argument (continued) printing 511 r
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yte count (continued) displaying wi
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clone output streams 693 close 566
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copy (continued) MVS data sets memb
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detect aliases 722 spelling errors
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EDITOR environment variable descrip
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environment variable (continued) _P
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environment variable (continued) PW
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file (continued) comparing two (con
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files (continued) /tmp/VIn* used by
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FWDRETR function key for OMVS comma
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IPA (Interprocedural Analysis) opti
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M MACHTYPE tcsh environment variabl
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NOSHAREAS option of OMVS command 86
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process (continued) returning (cont
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eset access time 166 Resource Acces
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shell (continued) evaluating argume
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standard error (stderr) allocating
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tcsh environment variable (continue
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term tcsh shell variable descriptio
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user ID changing to superuser 607 u
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Y y.output file used by yacc 821 y.
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z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

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