GSTRIPE(8) System Manager's Manual GSTRIPE(8) NAME gstripe -- control utility for striped devices SYNOPSIS gstripe create [-v] [-s stripesize] name prov prov [prov [...]] gstripe destroy [-fv] name [name [...]] gstripe label [-hv] [-s stripesize] name prov prov [prov [...]] gstripe stop [-fv] name [name [...]] gstripe clear [-v] prov [prov [...]] gstripe dump prov [prov [...]] gstripe list [name [...]] gstripe load [-v] gstripe unload [-v] DESCRIPTION The gstripe utility is used for setting up stripe on two or more disks. The striped device can be configured using two different methods: "manual" or "automatic". When using the "manual" method, no metadata are stored on the devices, so the striped device has to be configured by hand every time it is needed. The "automatic" method uses on-disk metadata to detect de- vices. Once devices are labeled, they will be automatically detected and configured. The first argument to gstripe indicates an action to be performed: create Set up a striped device from the given devices with specified name. This is the "manual" method. The kernel module geom_stripe.ko will be loaded if it is not loaded already. label Set up a striped device from the given devices with the specified name. This is the "automatic" method, where metadata are stored in every device's last sector. The kernel module geom_stripe.ko will be loaded if it is not loaded already. stop Turn off existing striped device by its name. This command does not touch on-disk metadata! destroy Same as stop. clear Clear metadata on the given devices. dump Dump metadata stored on the given devices. list List all or the given currently configured devices. load Load geom_stripe.ko kernel module. unload Unload geom_stripe.ko kernel module. Additional options: -f Force the removal of the specified striped device. -h Hardcode providers' names in metadata. -s stripesize Specifies size of stripe block. -v Be more verbose. SYSCTL VARIABLES The following sysctl(8) variables can be used to control the behavior of the STRIPE GEOM class. The default value is shown next to each variable. kern.geom.stripe.debug: 0 Debug level of the STRIPE GEOM class. This can be set to a number between 0 and 3, both included. If set to 0 minimal debug informa- tion is printed, and if set to 3 the maximum amount of debug infor- mation in printed. kern.geom.stripe.fast: 1 If set to a non-zero value enable "fast mode" instead of the normal "economic mode". Compared to "economic mode" "fast mode" uses more memory, but it is much faster for smaller stripe sizes. If enough memory cannot be allocated STRIPE will fall back to "economic mode". kern.geom.stripe.maxmem: 1310720 Maximum amount of memory that can be consumed by "fast mode" (in bytes). This sysctl(8) variable is read-only and can only be set as a tunable in loader.conf(5). kern.geom.stripe.fast_failed How many times "fast mode" failed because of insufficient amount of memory. If this value is big, you should considern increasing kern.geom.stripe.maxmem value. EXAMPLES The following example shows how to set up striped device from four disks for automatic configuration, create a file system on it, and mount it: gstripe label -v -s 4096 data /dev/da0 /dev/da1 /dev/da2 /dev/da3 newfs /dev/stripe/data mount /dev/stripe/data /mnt [...] umount /mnt gstripe stop data gstripe unload DIAGNOSTICS Exit status is 0 on success, and 1 if the command fails. SEE ALSO geom(4), loader.conf(5), geom(8), mount(8), newfs(8), sysctl(8), umount(8), vinum(8) HISTORY The gstripe utility appeared in FreeBSD 5.3. AUTHORS Pawel Jakub Dawidek <pjd@FreeBSD.org> FreeBSD 5.3 May 21, 2004 GSTRIPE(8)
NAME | SYNOPSIS | DESCRIPTION | SYSCTL VARIABLES | EXAMPLES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS
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