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| author | Chuck Silvers <chs@FreeBSD.org> | 2019-09-13 23:03:56 +0000 |
|---|---|---|
| committer | Chuck Silvers <chs@FreeBSD.org> | 2019-09-13 23:03:56 +0000 |
| commit | 090a3ea3c27406bb902ce013ee2019bc7fda2319 (patch) | |
| tree | 00e3a712e2ff8db05dc3d44c8dc84df4888ff70c /lib/geom | |
| parent | f8b45306c6c74938e248f9fbfc55499d2126a82f (diff) | |
| download | src-test-090a3ea3c27406bb902ce013ee2019bc7fda2319.tar.gz src-test-090a3ea3c27406bb902ce013ee2019bc7fda2319.zip | |
Add a "count_until_fail" option to gnop, which says to start failing
I/O requests after the given number have been allowed though.
Approved by: imp (mentor)
Reviewed by: rpokala kib 0mp mckusick
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D21593
Notes
Notes:
svn path=/head/; revision=352312
Diffstat (limited to 'lib/geom')
| -rw-r--r-- | lib/geom/nop/geom_nop.c | 14 | ||||
| -rw-r--r-- | lib/geom/nop/gnop.8 | 9 |
2 files changed, 16 insertions, 7 deletions
diff --git a/lib/geom/nop/geom_nop.c b/lib/geom/nop/geom_nop.c index ea7afdce0ca08..346a721d3127d 100644 --- a/lib/geom/nop/geom_nop.c +++ b/lib/geom/nop/geom_nop.c @@ -43,6 +43,7 @@ uint32_t version = G_NOP_VERSION; struct g_command class_commands[] = { { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, { + { 'c', "count_until_fail", "-1", G_TYPE_NUMBER }, { 'd', "delaymsec", "-1", G_TYPE_NUMBER }, { 'e', "error", "-1", G_TYPE_NUMBER }, { 'o', "offset", "0", G_TYPE_NUMBER }, @@ -57,12 +58,14 @@ struct g_command class_commands[] = { { 'z', "physpath", G_NOP_PHYSPATH_PASSTHROUGH, G_TYPE_STRING }, G_OPT_SENTINEL }, - "[-v] [-d delaymsec] [-e error] [-o offset] [-p stripesize] " - "[-P stripeoffset] [-q rdelayprob] [-r rfailprob] [-s size] " - "[-S secsize] [-w wfailprob] [-x wdelayprob] [-z physpath] dev ..." + "[-v] [-c count_until_fail] [-d delaymsec] [-e error] [-o offset] " + "[-p stripesize] [-P stripeoffset] [-q rdelayprob] [-r rfailprob] " + "[-s size] [-S secsize] [-w wfailprob] [-x wdelayprob] " + "[-z physpath] dev ..." }, { "configure", G_FLAG_VERBOSE, NULL, { + { 'c', "count_until_fail", "-1", G_TYPE_NUMBER }, { 'd', "delaymsec", "-1", G_TYPE_NUMBER }, { 'e', "error", "-1", G_TYPE_NUMBER }, { 'q', "rdelayprob", "-1", G_TYPE_NUMBER }, @@ -71,8 +74,9 @@ struct g_command class_commands[] = { { 'x', "wdelayprob", "-1", G_TYPE_NUMBER }, G_OPT_SENTINEL }, - "[-v] [-d delaymsec] [-e error] [-q rdelayprob] [-r rfailprob] " - "[-w wfailprob] [-x wdelayprob] prov ..." + "[-v] [-c count_until_fail] [-d delaymsec] [-e error] " + "[-q rdelayprob] [-r rfailprob] [-w wfailprob] [-x wdelayprob] " + "prov ..." }, { "destroy", G_FLAG_VERBOSE, NULL, { diff --git a/lib/geom/nop/gnop.8 b/lib/geom/nop/gnop.8 index ef6c44bc52974..12e6097285668 100644 --- a/lib/geom/nop/gnop.8 +++ b/lib/geom/nop/gnop.8 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 31, 2019 +.Dd September 13, 2019 .Dt GNOP 8 .Os .Sh NAME @@ -34,6 +34,7 @@ .Nm .Cm create .Op Fl v +.Op Fl c Ar count_until_fail .Op Fl d Ar delaymsec .Op Fl e Ar error .Op Fl o Ar offset @@ -50,6 +51,7 @@ .Nm .Cm configure .Op Fl v +.Op Fl c Ar count_until_fail .Op Fl d Ar delaymsec .Op Fl e Ar error .Op Fl q Ar rdelayprob @@ -118,7 +120,10 @@ See .El .Pp Additional options: -.Bl -tag -width ".Fl r Ar rfailprob" +.Bl -tag -width "-c count_until_fail" +.It Fl c Ar count_until_fail +Specifies the number of I/O requests to allow before setting the read and write +failure probabilities to 100%. .It Fl d Ar delaymsec Specifies the delay of the requests in milliseconds. Note that requests will be delayed before they are sent to the backing device. |