Bug 1476253
| Summary: | thin_rmap works without --region, but outputs nothing | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jakub Krysl <jkrysl> |
| Component: | device-mapper-persistent-data | Assignee: | Joe Thornber <thornber> |
| Status: | CLOSED ERRATA | QA Contact: | Jakub Krysl <jkrysl> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.4 | CC: | agk, heinzm, lvm-team, mcsontos, msnitzer, thornber |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | device-mapper-persistent-data-0.7.2-1.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-10 13:17:29 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
https://github.com/jthornber/thin-provisioning-tools/commit/3790f2e79c4f3e20a41834f1d1138b80342963c2 The above commit checks for zero regions. Release to follow. Fixed in device-mapper-persistent-data-0.7.2-1.el7.
# thin_rmap /dev/mapper/vgtest-swapvol
No regions provided.
Usage: thin_rmap [options] {device|file}
Options:
{-h|--help}
{-V|--version}
{--region <block range>}*
Where:
<block range> is of the form <begin>..<one-past-the-end>
for example 5..45 denotes blocks 5 to 44 inclusive, but not block 45
# echo $?
1
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2018:0776 |
Description of problem: It is possible to run thin_rmap without using --region option, but it outputs nothing and the return value is 0. Manpage suggest user must specify region: "thin_rmap outputs the reverse mapping stored in the metadata on a device or file between a region of thin provisioned pool blocks and the associated thin provisioned devices." Specifing region correctly prints out the data: thin_rmap /dev/mapper/vgtest-swapvol --region 0..-1 data 0..3 -> thin(1) 0..3 data 3..19 -> thin(1) 8..24 data 19..20 -> thin(1) 128..129 data 20..21 -> thin(1) 191..192 data 21..24 -> thin(2) 0..3 data 24..40 -> thin(2) 8..24 data 40..41 -> thin(2) 128..129 data 41..42 -> thin(2) 191..192 data 42..45 -> thin(3) 0..3 data 45..61 -> thin(3) 8..24 data 61..62 -> thin(3) 128..129 data 62..63 -> thin(3) 191..192 data 63..66 -> thin(4) 0..3 data 66..82 -> thin(4) 8..24 data 82..83 -> thin(4) 128..129 data 83..84 -> thin(4) 191..192 data 84..87 -> thin(5) 0..3 data 87..103 -> thin(5) 8..24 data 103..104 -> thin(5) 128..129 data 104..105 -> thin(5) 191..192 data 105..108 -> thin(6) 0..3 data 108..124 -> thin(6) 8..24 data 124..125 -> thin(6) 128..129 data 125..126 -> thin(6) 191..192 data 126..129 -> thin(7) 0..3 data 129..145 -> thin(7) 8..24 data 145..146 -> thin(7) 128..129 data 146..147 -> thin(7) 191..192 data 147..150 -> thin(8) 0..3 data 150..166 -> thin(8) 8..24 data 166..167 -> thin(8) 128..129 data 167..168 -> thin(8) 191..192 data 168..171 -> thin(9) 0..3 data 171..187 -> thin(9) 8..24 data 187..188 -> thin(9) 128..129 data 188..189 -> thin(9) 191..192 data 189..192 -> thin(10) 0..3 data 192..208 -> thin(10) 8..24 data 208..209 -> thin(10) 128..129 data 209..210 -> thin(10) 191..192 Version-Release number of selected component (if applicable): 0.7.0-0.1.rc6.el7 How reproducible: 100% Steps to Reproduce: 1.thin_rmap /dev/mapper/vgtest-swapvol 2.echo $? Actual results: Nothing printed and command succeeds [root@storageqe-18 thin]# thin_rmap /dev/mapper/vgtest-swapvol [root@storageqe-18 thin]# echo $? 0 Expected results: Either this error or the whole reverse map data [root@storageqe-18 thin]# thin_rmap /dev/mapper/vgtest-swapvol No region provided. Usage: thin_rmap [options] {device|file} Options: {-h|--help} {-V|--version} {--region <block range>}* Where: <block range> is of the form <begin>..<one-past-the-end> for example 5..45 denotes blocks 5 to 44 inclusive, but not block 45 Additional info: