@ccaffy - I test with this small patch to inject a fault: ``` --- a/src/XrdOss/XrdOssApi.cc +++ b/src/XrdOss/XrdOssApi.cc @@ -884,8 +884,13 @@ ssize_t XrdOssFile::Read(void *buff, off_t offset, size_t blen) else retval = cxobj->Read((char *)buff, blen, offset); else #endif + if (offset < 64*1024) { do { retval = pread(fd, buff, blen, offset); } while(retval < 0 && errno == EINTR); + } else { + errno = EIO; + retval = -1; + } return (retval >= 0 ? retval : (ssize_t)-errno); } ``` Any reads after 64KB will fail (though, since reads are issued as 1MB chunks, the test file needs to be >1MB). Note that you'll need to add `--raw -v` to the `curl` command to see the trailer. Sadly trailers aren't printed by `-v` by default. -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/pull/1912#issuecomment-1435150314 You are receiving this because you are subscribed to this thread. Message ID: <[log in to unmask]> ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1