diff options
Diffstat (limited to 'ReadMe.c')
| -rw-r--r-- | ReadMe.c | 38 |
1 files changed, 32 insertions, 6 deletions
@@ -29,7 +29,7 @@ #include "mdadm.h" -char Version[] = Name " - v1.5.0 - 22 Jan 2004\n"; +char Version[] = Name " - v1.6.0 - 4 June 2004\n"; /* * File: ReadMe.c * @@ -58,7 +58,7 @@ char Version[] = Name " - v1.5.0 - 22 Jan 2004\n"; */ /* - * mdadm has 6 major modes of operation: + * mdadm has 7 major modes of operation: * 1/ Create * This mode is used to create a new array with a superblock * It can progress in several step create-add-add-run @@ -84,9 +84,13 @@ char Version[] = Name " - v1.5.0 - 22 Jan 2004\n"; * Also query will treat it as either * 6/ Monitor * This mode never exits but just monitors arrays and reports changes. + * 7/ Grow + * This mode allows for changing of key attributes of a raid array, such + * as size, number of devices, and possibly even layout. + * At the time if writing, there is only minimal support. */ -char short_options[]="-ABCDEFGQhVvbc:l:p:m:n:x:u:c:d:z:U:sarfRSow1t"; +char short_options[]="-ABCDEFGQhVvbc:l:p:m:n:x:u:c:d:z:U:sa::rfRSow1t"; struct option long_options[] = { {"manage", 0, 0, '@'}, {"misc", 0, 0, '#'}, @@ -96,7 +100,7 @@ struct option long_options[] = { {"detail", 0, 0, 'D'}, {"examine", 0, 0, 'E'}, {"follow", 0, 0, 'F'}, - {"grow", 0, 0, 'G'}, /* not yet implemented */ + {"grow", 0, 0, 'G'}, {"zero-superblock", 0, 0, 'K'}, /* deliberately no a short_option */ {"query", 0, 0, 'Q'}, @@ -119,7 +123,9 @@ struct option long_options[] = { {"raid-devices",1, 0, 'n'}, {"spare-disks",1,0, 'x'}, {"spare-devices",1,0, 'x'}, - {"size" ,1, 0, 'z'}, + {"size", 1, 0, 'z'}, + {"auto", 2, 0, 'a'}, /* also for --assemble */ + {"assume-clean",0,0, 3 }, /* For assemble */ {"uuid", 1, 0, 'u'}, @@ -213,6 +219,8 @@ char OptionHelp[] = " --size= -z : Size (in K) of each drive in RAID1/4/5/6 - optional\n" " --force -f : Honour devices as listed on command line. Don't\n" " : insert a missing drive for RAID5.\n" +" --auto(=p) -a : Automatically allocate new (partitioned) md array if needed.\n" +" --assume-clean : Assume the array is already in-sync. This is dangerous.\n" "\n" " For assemble:\n" " --uuid= -u : uuid of array to assemble. Devices which don't\n" @@ -223,6 +231,7 @@ char OptionHelp[] = " --scan -s : scan config file for missing information\n" " --force -f : Assemble the array even if some superblocks appear out-of-date\n" " --update= -U : Update superblock: one of sparc2.2, super-minor or summaries\n" +" --auto(=p) -a : Automatically allocate new (partitioned) md array if needed.\n" "\n" " For detail or examine:\n" " --brief -b : Just print device name and UUID\n" @@ -401,7 +410,7 @@ char Help_monitor[] = "If no mail address or program are specified, then mdadm reports all\n" "state changes to stdout.\n" "\n" -"Options that are valid with the monitor (--F --follow) mode are:\n" +"Options that are valid with the monitor (-F --follow) mode are:\n" " --mail= -m : Address to mail alerts of failure to\n" " --program= -p : Program to run when an event is detected\n" " --alert= : same as --program\n" @@ -413,6 +422,22 @@ char Help_monitor[] = " --test -t : Generate a TestMessage event against each array at startup\n" ; +char Help_grow[] = +"Usage: mdadm --grow device options\n" +"\n" +"This usage causes mdadm to attempt to reconfigure a running array.\n" +"This is only possibly if the kernel being used supports a particular\n" +"reconfiguration. This version only supports changing the number of\n" +"devices in a RAID1, and changing the active size of all devices in\n" +"a RAID1/4/5/6.\n" +"\n" +"Options that are valid with the grow (-F --grow) mode are:\n" +" --size= -z : Change the active size of devices in an array.\n" +" : This is useful if all devices have been replaced\n" +" : with larger devices.\n" +" --raid-disks= -n : Change the number of active devices in a RAID1\n" +" : array.\n" +; @@ -494,4 +519,5 @@ mapping_t modes[] = { { "manage", MANAGE}, { "misc", MISC}, { "monitor", MONITOR}, + { "grow", GROW}, }; |