diff options
Diffstat (limited to 'mdadm.8')
| -rw-r--r-- | mdadm.8 | 53 |
1 files changed, 48 insertions, 5 deletions
@@ -1,5 +1,5 @@ .\" -*- nroff -*- -.TH MDADM 8 "" v1.7.0 +.TH MDADM 8 "" v1.8.0 .SH NAME mdadm \- manage MD devices .I aka @@ -30,14 +30,17 @@ md devices, .BR RAID4 , .BR RAID5 , .BR RAID6 , +.BR MULTIPATH , and -.BR MULTIPATH . +.BR FAULTY . .B MULTIPATH is not a Software RAID mechanism, but does involve multiple devices. For .B MULTIPATH each device is a path to one common physical storage device. +.B FAULTY is also no true RAID, and it only involves one device. It +provides a layer over a true device that can be used to inject faults. .B mdadm is a program that can be used to create, manage, and monitor @@ -246,7 +249,7 @@ Specify rounding factor for linear array (==chunk size) Set raid level. When used with .IR --create , options are: linear, raid0, 0, stripe, raid1, 1, mirror, raid4, 4, -raid5, 5, raid6, 6, multipath, mp. Obviously some of these are synonymous. +raid5, 5, raid6, 6, multipath, mp, fautly. Obviously some of these are synonymous. When used with .IR --build , @@ -261,6 +264,39 @@ right-asymmetric, right-symmetric, la, ra, ls, rs. The default is left-symmetric. +This option is also used to set the failure mode for +.IR faulty . +The options are: +write-transient, +wt, +read-transient, +rt, +write-presistent, +wp, +read-persistent, +rp, +write-all, +read-fixable, +rf, +clear, +flush, +none. + +Each mode can be followed by a number which is used as a period +between fault generation. Without a number, the fault is generated +once on the first relevant request. With a number, the fault will be +generated after that many request, and will continue to be generated +every time the period elapses. + +Multiple failure modes can be current simultaneously by using the +"--grow" option to set subsequent failure modes. + +"clear" or "none" will remove any pending or periodic failure modes, +and "flush" will clear any persistant faults. + +To set the parity with "--grow", the level of the array ("faulty") +must be specified before the fault mode is specified. + .TP .BR --layout= same as --parity @@ -540,6 +576,13 @@ which will only continue monitoring if a mail address or alert program is found in the config file. .TP +.BR -i ", " --pid-file +When +.B mdadm +is running in daemon mode, write the pid of the daemon process to +the specified file, instead of printing it on standard output. + +.TP .BR -1 ", " --oneshot Check arrays only once. This will generate .B NewArray @@ -741,7 +784,7 @@ will automatically create a degraded array with an extra spare drive. This is because building the spare into a degraded array is in general faster than resyncing the parity on a non-degraded, but not clean, array. This feature can be over-ridden with the --I --force +.I --force option. '''If the @@ -793,7 +836,7 @@ Usage: .I devices ... .PP -MISC mode includes a number if distinct operations that +MISC mode includes a number of distinct operations that operate on distinct devices. The operations are: .TP --query |